Study

pyorthanc.Study

Bases: Resource

Represent a study that is in an Orthanc server

This object has many getters that allow the user to retrieve metadata or the entire DICOM file of the Series

Source code in pyorthanc/_resources/study.py

class Study(Resource):
    """Represent a study that is in an Orthanc server

    This object has many getters that allow the user to retrieve metadata
    or the entire DICOM file of the Series
    """

    def get_main_information(self) -> Dict:
        """Get Study information

        Returns
        -------
        Dict
            Dictionary of study information
        """
        return self.client.get_studies_id(self.id_)

    @property
    def referring_physician_name(self) -> str:
        """Get referring physician name"""
        return self._get_main_dicom_tag_value('ReferringPhysicianName')

    @property
    def requesting_physician(self) -> str:
        """Get referring physician name"""
        return self._get_main_dicom_tag_value('RequestingPhysician')

    @property
    def date(self) -> datetime:
        """Get study date

        The date have precision to the second (if available).

        Returns
        -------
        datetime
            Study date
        """
        date_string = self._get_main_dicom_tag_value('StudyDate')
        try:
            time_string = self._get_main_dicom_tag_value('StudyTime')
        except errors.TagDoesNotExistError:
            time_string = None

        return util.make_datetime_from_dicom_date(date_string, time_string)

    @property
    def study_id(self) -> str:
        """Get Study ID"""
        return self._get_main_dicom_tag_value('StudyID')

    @property
    def uid(self) -> str:
        """Get StudyInstanceUID"""
        return self._get_main_dicom_tag_value('StudyInstanceUID')

    @property
    def patient_identifier(self) -> str:
        """Get the Orthanc identifier of the parent patient"""
        return self.get_main_information()['ParentPatient']

    @property
    def parent_patient(self) -> Patient:
        from . import Patient
        return Patient(self.patient_identifier, self.client)

    @property
    def patient_information(self) -> Dict:
        """Get patient information"""
        return self.get_main_information()['PatientMainDicomTags']

    @property
    def series(self) -> List[Series]:
        """Get Study series"""
        if self._lock_children:
            if self._child_resources is None:
                series_ids = self.get_main_information()['Series']
                self._child_resources = [Series(i, self.client, self._lock_children) for i in series_ids]

            return self._child_resources

        series_ids = self.get_main_information()['Series']

        return [Series(i, self.client) for i in series_ids]

    @property
    def accession_number(self) -> str:
        return self._get_main_dicom_tag_value('AccessionNumber')

    @property
    def description(self) -> str:
        return self._get_main_dicom_tag_value('StudyDescription')

    @property
    def institution_name(self) -> str:
        return self._get_main_dicom_tag_value('InstitutionName')

    @property
    def requested_procedure_description(self) -> str:
        return self._get_main_dicom_tag_value('RequestedProcedureDescription')

    @property
    def is_stable(self) -> bool:
        return self.get_main_information()['IsStable']

    @property
    def last_update(self) -> datetime:
        last_updated_date_and_time = self.get_main_information()['LastUpdate'].split('T')
        date = last_updated_date_and_time[0]
        time = last_updated_date_and_time[1]

        return util.make_datetime_from_dicom_date(date, time)

    @property
    def labels(self) -> List[str]:
        return self.get_main_information()['Labels']

    def add_label(self, label: str) -> None:
        self.client.put_studies_id_labels_label(self.id_, label)

    def remove_label(self, label):
        self.client.delete_studies_id_labels_label(self.id_, label)

    def anonymize(self, remove: List = None, replace: Dict = None, keep: List = None,
                  force: bool = False, keep_private_tags: bool = False,
                  keep_source: bool = True, priority: int = 0, permissive: bool = False,
                  private_creator: str = None, dicom_version: str = None) -> 'Study':
        """Anonymize study

        If no error has been raise, return an anonymous study.
        Documentation: https://book.orthanc-server.com/users/anonymization.html

        Notes
        -----
        This method might be long to run, especially on large study or when multiple
        studies are anonymized. In those cases, it is recommended to use the `.anonymize_as_job()`

        Parameters
        ----------
        remove
            List of tag to remove
        replace
            Dictionary of {tag: new_content}
        keep
            List of tag to keep unchanged
        force
            Some tags can't be changed without forcing it (e.g. StudyID) for security reason
        keep_private_tags
            If True, keep the private tags from the DICOM instances.
        keep_source
            If False, instructs Orthanc to the remove original resources.
            By default, the original resources are kept in Orthanc.
        priority
            Priority of the job. The lower the value, the higher the priority.
        permissive
            If True, ignore errors during the individual steps of the job.
        private_creator
            The private creator to be used for private tags in replace.
        dicom_version
            Version of the DICOM standard to be used for anonymization.
            Check out configuration option DeidentifyLogsDicomVersion for possible values.

        Returns
        -------
        Study
            A New anonymous study.

        Examples
        --------
        ```python
        new_study = study.anonymize()

        new_study_with_specific_study_id = study.anonymize(
            replace={'StudyDescription': 'A description'}
        )
        """
        remove = [] if remove is None else remove
        replace = {} if replace is None else replace
        keep = [] if keep is None else keep

        data = {
            'Asynchronous': False,
            'Remove': remove,
            'Replace': replace,
            'Keep': keep,
            'Force': force,
            'KeepPrivateTags': keep_private_tags,
            'KeepSource': keep_source,
            'Priority': priority,
            'Permissive': permissive,
        }
        if private_creator is not None:
            data['PrivateCreator'] = private_creator
        if dicom_version is not None:
            data['DicomVersion'] = dicom_version

        try:
            anonymous_study = self.client.post_studies_id_anonymize(self.id_, data)
        except ReadTimeout:
            raise ReadTimeout(
                'Study anonymization is too long to process. '
                'Use `.anonymize_as_job` or increase client.timeout.'
            )

        return Study(anonymous_study['ID'], self.client)

    def anonymize_as_job(self, remove: List = None, replace: Dict = None, keep: List = None,
                         force: bool = False, keep_private_tags: bool = False,
                         keep_source: bool = True, priority: int = 0, permissive: bool = False,
                         private_creator: str = None, dicom_version: str = None) -> Job:
        """Anonymize study and return a job

        Launch an anonymization job.
        Documentation: https://book.orthanc-server.com/users/anonymization.html

        Notes
        -----
        This method is useful when anonymizing large study or launching many
        anonymization jobs. The jobs are sent to Orthanc and processed according
        to the priority.

        Parameters
        ----------
        remove
            List of tag to remove
        replace
            Dictionary of {tag: new_content}
        keep
            List of tag to keep unchanged
        force
            Some tags can't be changed without forcing it (e.g. StudyInstanceUID) for security reason
        keep_private_tags
            If True, keep the private tags from the DICOM instances.
        keep_source
            If False, instructs Orthanc to the remove original resources.
            By default, the original resources are kept in Orthanc.
        priority
            Priority of the job. The lower the value, the higher the priority.
        permissive
            If True, ignore errors during the individual steps of the job.
        private_creator
            The private creator to be used for private tags in replace.
        dicom_version
            Version of the DICOM standard to be used for anonymization.
            Check out configuration option DeidentifyLogsDicomVersion for possible values.

        Returns
        -------
        Job
            Return a Job object of the anonymization job.

        Examples
        --------
        For large study (recommended)
        ```python
        job = study.anonymize_as_job()
        job.state  # You can follow the job state

        job.wait_until_completion() # Or just wait on its completion
        new_study = Study(job.content['ID'], orthanc)
        ```
        """
        remove = [] if remove is None else remove
        replace = {} if replace is None else replace
        keep = [] if keep is None else keep

        data = {
            'Asynchronous': True,
            'Remove': remove,
            'Replace': replace,
            'Keep': keep,
            'Force': force,
            'KeepPrivateTags': keep_private_tags,
            'KeepSource': keep_source,
            'Priority': priority,
            'Permissive': permissive,
        }
        if private_creator is not None:
            data['PrivateCreator'] = private_creator
        if dicom_version is not None:
            data['DicomVersion'] = dicom_version

        job_info = self.client.post_studies_id_anonymize(self.id_, data)

        return Job(job_info['ID'], self.client)

    def modify(self, remove: List = None, replace: Dict = None, keep: List = None,
               force: bool = False, remove_private_tags: bool = False,
               keep_source: bool = True, priority: int = 0, permissive: bool = False,
               private_creator: str = None) -> 'Study':
        """Modify study

        If no error has been raise, then create a modified version of the study.
        If keep=['StudyInstanceUID'] and force=True are use, then the study itself is changed.
        Documentation: https://book.orthanc-server.com/users/anonymization.html

        Notes
        -----
        This method might be long to run, especially on large study or when multiple
        studies are modified. In those cases, it is recommended to use the `.modify_as_job()`

        Parameters
        ----------
        remove
            List of tag to remove
        replace
            Dictionary of {tag: new_content}
        keep
            Keep the original value of the specified tags, to be chosen among the StudyInstanceUID,
            SeriesInstanceUID and SOPInstanceUID tags. Avoid this feature as much as possible,
            as this breaks the DICOM model of the real world.
        force
            Some tags can't be changed without forcing it (e.g. StudyInstanceUID) for security reason
        remove_private_tags
            If True, remove the private tags from the DICOM instances.
        keep_source
            If False, instructs Orthanc to the remove original resources.
            By default, the original resources are kept in Orthanc.
        priority
            Priority of the job. The lower the value, the higher the priority.
        permissive
            If True, ignore errors during the individual steps of the job.
        private_creator
            The private creator to be used for private tags in Replace.

        Returns
        -------
        Study
            Returns a new modified study or returns itself if keep=['StudyInstanceUID']
            (in this case, the study itself is modified).

        Examples
        --------
        ```python
        # Create a modified study
        modified_study = study.modify(replace={'StudyInstanceUID': '1.2.840.113745.101000.1008000.38048.4626.5933732'}, force=True)
        assert modified_study.uid == '1.2.840.113745.101000.1008000.38048.4626.5933732'

        # Modify itself
        study.modify(replace={'ReferringPhysicianName': 'last^first'}, keep=['StudyInstanceUID'], force=True)
        assert study.referring_physician_name == 'last^first'
        ```
        """
        remove = [] if remove is None else remove
        replace = {} if replace is None else replace
        keep = [] if keep is None else keep

        if 'StudyInstanceUID' in replace and not force:
            raise errors.ModificationError('If StudyInstanceUID is replaced, `force` must be `True`')

        data = {
            'Asynchronous': False,
            'Remove': remove,
            'Replace': replace,
            'Keep': keep,
            'Force': force,
            'RemovePrivateTags': remove_private_tags,
            'KeepSource': keep_source,
            'Priority': priority,
            'Permissive': permissive,
        }
        if private_creator is not None:
            data['PrivateCreator'] = private_creator

        try:
            modified_study = self.client.post_studies_id_modify(self.id_, data)
        except ReadTimeout:
            raise ReadTimeout(
                'Study modification is too long to process. '
                'Use `.modify_as_job` or increase client.timeout.'
            )

        # Reset cache since a main DICOM tag may have be changed
        self._main_dicom_tags = None

        # if 'StudyInstanceUID' is not affected, the modified_study['ID'] is the same as self.id_
        return Study(modified_study['ID'], self.client)

    def modify_as_job(self, remove: List = None, replace: Dict = None, keep: List = None,
                      force: bool = False, remove_private_tags: bool = False,
                      keep_source: bool = True, priority: int = 0, permissive: bool = False,
                      private_creator: str = None) -> Job:
        """Modify study and return a job

        Launch a modification job. If keep=['StudyInstanceUID'] (with `force=True`),
        then modified this study. If the StudyInstanceUID is not keeped, this creates
        a new modified study.
        Documentation: https://book.orthanc-server.com/users/anonymization.html

        Notes
        -----
        This method is useful when modifying large study or launching many
        modification jobs. The jobs are sent to Orthanc and processed according
        to the priority.

        Parameters
        ----------
        remove
            List of tag to remove
        replace
            Dictionary of {tag: new_content}
        keep
            Keep the original value of the specified tags, to be chosen among the StudyInstanceUID,
            SeriesInstanceUID and SOPInstanceUID tags. Avoid this feature as much as possible,
            as this breaks the DICOM model of the real world.
        force
            Allow the modification of tags related to DICOM identifiers, at the risk of breaking
            the DICOM model of the real world.
        remove_private_tags
            If True, remove the private tags from the DICOM instances.
        keep_source
            If False, instructs Orthanc to the remove original resources.
            By default, the original resources are kept in Orthanc.
        priority
            Priority of the job. The lower the value, the higher the priority.
        permissive
            If True, ignore errors during the individual steps of the job.
        private_creator
            The private creator to be used for private tags in Replace.

        Returns
        -------
        Job
            Return a Job object of the modification job.

        Examples
        --------
        For large study (recommended)
        ```python
        job = study.modify_as_job(replace={'StudyDescription': 'a description'})
        job.state  # You can follow the job state

        job.wait_until_completion() # Or just wait on its completion
        modified_study = Study(job.content['ID'], client)
        assert modified_study.description == 'a description'
        ```
        Or modify the StudyInstanceUID
        ```python
        job = study.modify_as_job(
            replace={'StudyInstanceUID': '1.2.840.113745.101000.1008000.38048.4626.5933732'},
            force=True
        )
        job.wait_until_completion() # Or just wait on its completion

        modified_study = Study(job.content['ID'], client)
        modified_study.uid == '1.2.840.113745.101000.1008000.38048.4626.5933732'
        ```
        Or keep the StudyInstanceUID
        ```python
        job = study.modify_as_job(
            replace={'StudyDescription': 'a description'},
            keep=['StudyInstanceUID'],
            force=True
        )
        job.wait_until_completion()

        assert study.description == 'a description'
        ```
        """
        remove = [] if remove is None else remove
        replace = {} if replace is None else replace
        keep = [] if keep is None else keep

        if 'StudyInstanceUID' in replace and not force:
            raise errors.ModificationError('If StudyInstanceUID is affected, `force` must be `True`')

        data = {
            'Asynchronous': True,
            'Remove': remove,
            'Replace': replace,
            'Keep': keep,
            'Force': force,
            'RemovePrivateTags': remove_private_tags,
            'KeepSource': keep_source,
            'Priority': priority,
            'Permissive': permissive,
        }
        if private_creator is not None:
            data['PrivateCreator'] = private_creator

        job_info = self.client.post_studies_id_modify(self.id_, data)

        # Reset cache since a main DICOM tag may have be changed
        self._main_dicom_tags = None

        return Job(job_info['ID'], self.client)

    def get_zip(self) -> bytes:
        """Get the bytes of the zip file

        Get the .zip file.

        Returns
        -------
        bytes
            Bytes of Zip file of the study.

        Examples
        --------
        ```python
        from pyorthanc import Orthanc, Study
        a_study = Study('STUDY_IDENTIFIER', Orthanc('http://localhost:8042'))

        bytes_content = a_study.get_zip()
        with open('study_zip_file_path.zip', 'wb') as file_handler:
            file_handler.write(bytes_content)
        ```
        """
        return self.client.get_studies_id_archive(self.id_)

    def download(self, filepath: Union[str, BinaryIO], with_progres: bool = False) -> None:
        """Download the zip file to a target path or buffer

        This method is an alternative to the `.get_zip()` method for large files.
        The `.get_zip()` method will pull all the data in a single GET call,
        while `.download()` stream the data to a file or a buffer.
        Favor the `.download()` method to avoid timeout and memory issues.

        Examples
        --------
        ```python
        from pyorthanc import Orthanc, Study
        a_study = Study('STUDY_IDENTIFIER', Orthanc('http://localhost:8042'))

        # Download a zip
        a_study.download('study.zip')

        # Download a zip and show progress
        a_study.download('study.zip', with_progres=True)

        # Or download in a buffer in memory
        buffer = io.BytesIO()
        a_study.download(buffer)
        # Now do whatever you want to do
        buffer.seek(0)
        zip_bytes = buffer.read()
        ```
        """
        self._download_file(f'{self.client.url}/studies/{self.id_}/archive', filepath, with_progres)

    def get_shared_tags(self, simplify: bool = False, short: bool = False) -> Dict:
        """Retrieve the shared tags of the study"""
        params = self._make_response_format_params(simplify, short)

        return dict(self.client.get_studies_id_shared_tags(
            self.id_,
            params=params
        ))

    @property
    def shared_tags(self) -> Dict:
        return self.get_shared_tags(simplify=True)

    def remove_empty_series(self) -> None:
        """Delete empty series."""
        if self._child_resources is None:
            return

        for series in self._child_resources:
            series.remove_empty_instances()

        self._child_resources = [series for series in self._child_resources if series._child_resources != []]

accession_number: str property

date: datetime property

Get study date

The date have precision to the second (if available).

Returns:

Type	Description
datetime	Study date

description: str property

institution_name: str property

is_stable: bool property

labels: List[str] property

last_update: datetime property

parent_patient: Patient property

patient_identifier: str property

Get the Orthanc identifier of the parent patient

patient_information: Dict property

Get patient information

referring_physician_name: str property

Get referring physician name

requested_procedure_description: str property

requesting_physician: str property

Get referring physician name

series: List[Series] property

Get Study series

shared_tags: Dict property

study_id: str property

Get Study ID

uid: str property

Get StudyInstanceUID

add_label(label)

Source code in pyorthanc/_resources/study.py

def add_label(self, label: str) -> None:
    self.client.put_studies_id_labels_label(self.id_, label)

anonymize(remove=None, replace=None, keep=None, force=False, keep_private_tags=False, keep_source=True, priority=0, permissive=False, private_creator=None, dicom_version=None)

Anonymize study

If no error has been raise, return an anonymous study. Documentation: https://book.orthanc-server.com/users/anonymization.html

Notes

This method might be long to run, especially on large study or when multiple studies are anonymized. In those cases, it is recommended to use the .anonymize_as_job()

Parameters:

Name	Type	Description	Default
remove	List	List of tag to remove	None
replace	Dict	Dictionary of {tag: new_content}	None
keep	List	List of tag to keep unchanged	None
force	bool	Some tags can't be changed without forcing it (e.g. StudyID) for security reason	False
keep_private_tags	bool	If True, keep the private tags from the DICOM instances.	False
keep_source	bool	If False, instructs Orthanc to the remove original resources. By default, the original resources are kept in Orthanc.	True
priority	int	Priority of the job. The lower the value, the higher the priority.	0
permissive	bool	If True, ignore errors during the individual steps of the job.	False
private_creator	str	The private creator to be used for private tags in replace.	None
dicom_version	str	Version of the DICOM standard to be used for anonymization. Check out configuration option DeidentifyLogsDicomVersion for possible values.	None

Returns:

Type	Description
Study	A New anonymous study.

Examples:

```python new_study = study.anonymize()

new_study_with_specific_study_id = study.anonymize( replace={'StudyDescription': 'A description'} )

Source code in pyorthanc/_resources/study.py

def anonymize(self, remove: List = None, replace: Dict = None, keep: List = None,
              force: bool = False, keep_private_tags: bool = False,
              keep_source: bool = True, priority: int = 0, permissive: bool = False,
              private_creator: str = None, dicom_version: str = None) -> 'Study':
    """Anonymize study

    If no error has been raise, return an anonymous study.
    Documentation: https://book.orthanc-server.com/users/anonymization.html

    Notes
    -----
    This method might be long to run, especially on large study or when multiple
    studies are anonymized. In those cases, it is recommended to use the `.anonymize_as_job()`

    Parameters
    ----------
    remove
        List of tag to remove
    replace
        Dictionary of {tag: new_content}
    keep
        List of tag to keep unchanged
    force
        Some tags can't be changed without forcing it (e.g. StudyID) for security reason
    keep_private_tags
        If True, keep the private tags from the DICOM instances.
    keep_source
        If False, instructs Orthanc to the remove original resources.
        By default, the original resources are kept in Orthanc.
    priority
        Priority of the job. The lower the value, the higher the priority.
    permissive
        If True, ignore errors during the individual steps of the job.
    private_creator
        The private creator to be used for private tags in replace.
    dicom_version
        Version of the DICOM standard to be used for anonymization.
        Check out configuration option DeidentifyLogsDicomVersion for possible values.

    Returns
    -------
    Study
        A New anonymous study.

    Examples
    --------
    ```python
    new_study = study.anonymize()

    new_study_with_specific_study_id = study.anonymize(
        replace={'StudyDescription': 'A description'}
    )
    """
    remove = [] if remove is None else remove
    replace = {} if replace is None else replace
    keep = [] if keep is None else keep

    data = {
        'Asynchronous': False,
        'Remove': remove,
        'Replace': replace,
        'Keep': keep,
        'Force': force,
        'KeepPrivateTags': keep_private_tags,
        'KeepSource': keep_source,
        'Priority': priority,
        'Permissive': permissive,
    }
    if private_creator is not None:
        data['PrivateCreator'] = private_creator
    if dicom_version is not None:
        data['DicomVersion'] = dicom_version

    try:
        anonymous_study = self.client.post_studies_id_anonymize(self.id_, data)
    except ReadTimeout:
        raise ReadTimeout(
            'Study anonymization is too long to process. '
            'Use `.anonymize_as_job` or increase client.timeout.'
        )

    return Study(anonymous_study['ID'], self.client)

anonymize_as_job(remove=None, replace=None, keep=None, force=False, keep_private_tags=False, keep_source=True, priority=0, permissive=False, private_creator=None, dicom_version=None)

Anonymize study and return a job

Launch an anonymization job. Documentation: https://book.orthanc-server.com/users/anonymization.html

Notes

This method is useful when anonymizing large study or launching many anonymization jobs. The jobs are sent to Orthanc and processed according to the priority.

Parameters:

Name	Type	Description	Default
remove	List	List of tag to remove	None
replace	Dict	Dictionary of {tag: new_content}	None
keep	List	List of tag to keep unchanged	None
force	bool	Some tags can't be changed without forcing it (e.g. StudyInstanceUID) for security reason	False
keep_private_tags	bool	If True, keep the private tags from the DICOM instances.	False
keep_source	bool	If False, instructs Orthanc to the remove original resources. By default, the original resources are kept in Orthanc.	True
priority	int	Priority of the job. The lower the value, the higher the priority.	0
permissive	bool	If True, ignore errors during the individual steps of the job.	False
private_creator	str	The private creator to be used for private tags in replace.	None
dicom_version	str	Version of the DICOM standard to be used for anonymization. Check out configuration option DeidentifyLogsDicomVersion for possible values.	None

Returns:

Type	Description
Job	Return a Job object of the anonymization job.

Examples:

For large study (recommended)

job = study.anonymize_as_job()
job.state  # You can follow the job state

job.wait_until_completion() # Or just wait on its completion
new_study = Study(job.content['ID'], orthanc)

Source code in pyorthanc/_resources/study.py

def anonymize_as_job(self, remove: List = None, replace: Dict = None, keep: List = None,
                     force: bool = False, keep_private_tags: bool = False,
                     keep_source: bool = True, priority: int = 0, permissive: bool = False,
                     private_creator: str = None, dicom_version: str = None) -> Job:
    """Anonymize study and return a job

    Launch an anonymization job.
    Documentation: https://book.orthanc-server.com/users/anonymization.html

    Notes
    -----
    This method is useful when anonymizing large study or launching many
    anonymization jobs. The jobs are sent to Orthanc and processed according
    to the priority.

    Parameters
    ----------
    remove
        List of tag to remove
    replace
        Dictionary of {tag: new_content}
    keep
        List of tag to keep unchanged
    force
        Some tags can't be changed without forcing it (e.g. StudyInstanceUID) for security reason
    keep_private_tags
        If True, keep the private tags from the DICOM instances.
    keep_source
        If False, instructs Orthanc to the remove original resources.
        By default, the original resources are kept in Orthanc.
    priority
        Priority of the job. The lower the value, the higher the priority.
    permissive
        If True, ignore errors during the individual steps of the job.
    private_creator
        The private creator to be used for private tags in replace.
    dicom_version
        Version of the DICOM standard to be used for anonymization.
        Check out configuration option DeidentifyLogsDicomVersion for possible values.

    Returns
    -------
    Job
        Return a Job object of the anonymization job.

    Examples
    --------
    For large study (recommended)
    ```python
    job = study.anonymize_as_job()
    job.state  # You can follow the job state

    job.wait_until_completion() # Or just wait on its completion
    new_study = Study(job.content['ID'], orthanc)
    ```
    """
    remove = [] if remove is None else remove
    replace = {} if replace is None else replace
    keep = [] if keep is None else keep

    data = {
        'Asynchronous': True,
        'Remove': remove,
        'Replace': replace,
        'Keep': keep,
        'Force': force,
        'KeepPrivateTags': keep_private_tags,
        'KeepSource': keep_source,
        'Priority': priority,
        'Permissive': permissive,
    }
    if private_creator is not None:
        data['PrivateCreator'] = private_creator
    if dicom_version is not None:
        data['DicomVersion'] = dicom_version

    job_info = self.client.post_studies_id_anonymize(self.id_, data)

    return Job(job_info['ID'], self.client)

download(filepath, with_progres=False)

Download the zip file to a target path or buffer

This method is an alternative to the .get_zip() method for large files. The .get_zip() method will pull all the data in a single GET call, while .download() stream the data to a file or a buffer. Favor the .download() method to avoid timeout and memory issues.

Examples:

from pyorthanc import Orthanc, Study
a_study = Study('STUDY_IDENTIFIER', Orthanc('http://localhost:8042'))

# Download a zip
a_study.download('study.zip')

# Download a zip and show progress
a_study.download('study.zip', with_progres=True)

# Or download in a buffer in memory
buffer = io.BytesIO()
a_study.download(buffer)
# Now do whatever you want to do
buffer.seek(0)
zip_bytes = buffer.read()

Source code in pyorthanc/_resources/study.py

def download(self, filepath: Union[str, BinaryIO], with_progres: bool = False) -> None:
    """Download the zip file to a target path or buffer

    This method is an alternative to the `.get_zip()` method for large files.
    The `.get_zip()` method will pull all the data in a single GET call,
    while `.download()` stream the data to a file or a buffer.
    Favor the `.download()` method to avoid timeout and memory issues.

    Examples
    --------
    ```python
    from pyorthanc import Orthanc, Study
    a_study = Study('STUDY_IDENTIFIER', Orthanc('http://localhost:8042'))

    # Download a zip
    a_study.download('study.zip')

    # Download a zip and show progress
    a_study.download('study.zip', with_progres=True)

    # Or download in a buffer in memory
    buffer = io.BytesIO()
    a_study.download(buffer)
    # Now do whatever you want to do
    buffer.seek(0)
    zip_bytes = buffer.read()
    ```
    """
    self._download_file(f'{self.client.url}/studies/{self.id_}/archive', filepath, with_progres)

get_main_information()

Get Study information

Returns:

Type	Description
Dict	Dictionary of study information

Source code in pyorthanc/_resources/study.py

def get_main_information(self) -> Dict:
    """Get Study information

    Returns
    -------
    Dict
        Dictionary of study information
    """
    return self.client.get_studies_id(self.id_)

get_shared_tags(simplify=False, short=False)

Retrieve the shared tags of the study

Source code in pyorthanc/_resources/study.py

def get_shared_tags(self, simplify: bool = False, short: bool = False) -> Dict:
    """Retrieve the shared tags of the study"""
    params = self._make_response_format_params(simplify, short)

    return dict(self.client.get_studies_id_shared_tags(
        self.id_,
        params=params
    ))

get_zip()

Get the bytes of the zip file

Get the .zip file.

Returns:

Type	Description
bytes	Bytes of Zip file of the study.

Examples:

from pyorthanc import Orthanc, Study
a_study = Study('STUDY_IDENTIFIER', Orthanc('http://localhost:8042'))

bytes_content = a_study.get_zip()
with open('study_zip_file_path.zip', 'wb') as file_handler:
    file_handler.write(bytes_content)

Source code in pyorthanc/_resources/study.py

def get_zip(self) -> bytes:
    """Get the bytes of the zip file

    Get the .zip file.

    Returns
    -------
    bytes
        Bytes of Zip file of the study.

    Examples
    --------
    ```python
    from pyorthanc import Orthanc, Study
    a_study = Study('STUDY_IDENTIFIER', Orthanc('http://localhost:8042'))

    bytes_content = a_study.get_zip()
    with open('study_zip_file_path.zip', 'wb') as file_handler:
        file_handler.write(bytes_content)
    ```
    """
    return self.client.get_studies_id_archive(self.id_)

modify(remove=None, replace=None, keep=None, force=False, remove_private_tags=False, keep_source=True, priority=0, permissive=False, private_creator=None)

Modify study

If no error has been raise, then create a modified version of the study. If keep=['StudyInstanceUID'] and force=True are use, then the study itself is changed. Documentation: https://book.orthanc-server.com/users/anonymization.html

Notes

This method might be long to run, especially on large study or when multiple studies are modified. In those cases, it is recommended to use the .modify_as_job()

Parameters:

Name	Type	Description	Default
remove	List	List of tag to remove	None
replace	Dict	Dictionary of {tag: new_content}	None
keep	List	Keep the original value of the specified tags, to be chosen among the StudyInstanceUID, SeriesInstanceUID and SOPInstanceUID tags. Avoid this feature as much as possible, as this breaks the DICOM model of the real world.	None
force	bool	Some tags can't be changed without forcing it (e.g. StudyInstanceUID) for security reason	False
remove_private_tags	bool	If True, remove the private tags from the DICOM instances.	False
keep_source	bool	If False, instructs Orthanc to the remove original resources. By default, the original resources are kept in Orthanc.	True
priority	int	Priority of the job. The lower the value, the higher the priority.	0
permissive	bool	If True, ignore errors during the individual steps of the job.	False
private_creator	str	The private creator to be used for private tags in Replace.	None

Returns:

Type	Description
Study	Returns a new modified study or returns itself if keep=['StudyInstanceUID'] (in this case, the study itself is modified).

Examples:

# Create a modified study
modified_study = study.modify(replace={'StudyInstanceUID': '1.2.840.113745.101000.1008000.38048.4626.5933732'}, force=True)
assert modified_study.uid == '1.2.840.113745.101000.1008000.38048.4626.5933732'

# Modify itself
study.modify(replace={'ReferringPhysicianName': 'last^first'}, keep=['StudyInstanceUID'], force=True)
assert study.referring_physician_name == 'last^first'

Source code in pyorthanc/_resources/study.py

def modify(self, remove: List = None, replace: Dict = None, keep: List = None,
           force: bool = False, remove_private_tags: bool = False,
           keep_source: bool = True, priority: int = 0, permissive: bool = False,
           private_creator: str = None) -> 'Study':
    """Modify study

    If no error has been raise, then create a modified version of the study.
    If keep=['StudyInstanceUID'] and force=True are use, then the study itself is changed.
    Documentation: https://book.orthanc-server.com/users/anonymization.html

    Notes
    -----
    This method might be long to run, especially on large study or when multiple
    studies are modified. In those cases, it is recommended to use the `.modify_as_job()`

    Parameters
    ----------
    remove
        List of tag to remove
    replace
        Dictionary of {tag: new_content}
    keep
        Keep the original value of the specified tags, to be chosen among the StudyInstanceUID,
        SeriesInstanceUID and SOPInstanceUID tags. Avoid this feature as much as possible,
        as this breaks the DICOM model of the real world.
    force
        Some tags can't be changed without forcing it (e.g. StudyInstanceUID) for security reason
    remove_private_tags
        If True, remove the private tags from the DICOM instances.
    keep_source
        If False, instructs Orthanc to the remove original resources.
        By default, the original resources are kept in Orthanc.
    priority
        Priority of the job. The lower the value, the higher the priority.
    permissive
        If True, ignore errors during the individual steps of the job.
    private_creator
        The private creator to be used for private tags in Replace.

    Returns
    -------
    Study
        Returns a new modified study or returns itself if keep=['StudyInstanceUID']
        (in this case, the study itself is modified).

    Examples
    --------
    ```python
    # Create a modified study
    modified_study = study.modify(replace={'StudyInstanceUID': '1.2.840.113745.101000.1008000.38048.4626.5933732'}, force=True)
    assert modified_study.uid == '1.2.840.113745.101000.1008000.38048.4626.5933732'

    # Modify itself
    study.modify(replace={'ReferringPhysicianName': 'last^first'}, keep=['StudyInstanceUID'], force=True)
    assert study.referring_physician_name == 'last^first'
    ```
    """
    remove = [] if remove is None else remove
    replace = {} if replace is None else replace
    keep = [] if keep is None else keep

    if 'StudyInstanceUID' in replace and not force:
        raise errors.ModificationError('If StudyInstanceUID is replaced, `force` must be `True`')

    data = {
        'Asynchronous': False,
        'Remove': remove,
        'Replace': replace,
        'Keep': keep,
        'Force': force,
        'RemovePrivateTags': remove_private_tags,
        'KeepSource': keep_source,
        'Priority': priority,
        'Permissive': permissive,
    }
    if private_creator is not None:
        data['PrivateCreator'] = private_creator

    try:
        modified_study = self.client.post_studies_id_modify(self.id_, data)
    except ReadTimeout:
        raise ReadTimeout(
            'Study modification is too long to process. '
            'Use `.modify_as_job` or increase client.timeout.'
        )

    # Reset cache since a main DICOM tag may have be changed
    self._main_dicom_tags = None

    # if 'StudyInstanceUID' is not affected, the modified_study['ID'] is the same as self.id_
    return Study(modified_study['ID'], self.client)

modify_as_job(remove=None, replace=None, keep=None, force=False, remove_private_tags=False, keep_source=True, priority=0, permissive=False, private_creator=None)

Modify study and return a job

Launch a modification job. If keep=['StudyInstanceUID'] (with force=True), then modified this study. If the StudyInstanceUID is not keeped, this creates a new modified study. Documentation: https://book.orthanc-server.com/users/anonymization.html

Notes

This method is useful when modifying large study or launching many modification jobs. The jobs are sent to Orthanc and processed according to the priority.

Parameters:

Name	Type	Description	Default
remove	List	List of tag to remove	None
replace	Dict	Dictionary of {tag: new_content}	None
keep	List	Keep the original value of the specified tags, to be chosen among the StudyInstanceUID, SeriesInstanceUID and SOPInstanceUID tags. Avoid this feature as much as possible, as this breaks the DICOM model of the real world.	None
force	bool	Allow the modification of tags related to DICOM identifiers, at the risk of breaking the DICOM model of the real world.	False
remove_private_tags	bool	If True, remove the private tags from the DICOM instances.	False
keep_source	bool	If False, instructs Orthanc to the remove original resources. By default, the original resources are kept in Orthanc.	True
priority	int	Priority of the job. The lower the value, the higher the priority.	0
permissive	bool	If True, ignore errors during the individual steps of the job.	False
private_creator	str	The private creator to be used for private tags in Replace.	None

Returns:

Type	Description
Job	Return a Job object of the modification job.

Examples:

For large study (recommended)

job = study.modify_as_job(replace={'StudyDescription': 'a description'})
job.state  # You can follow the job state

job.wait_until_completion() # Or just wait on its completion
modified_study = Study(job.content['ID'], client)
assert modified_study.description == 'a description'

Or modify the StudyInstanceUID

job = study.modify_as_job(
    replace={'StudyInstanceUID': '1.2.840.113745.101000.1008000.38048.4626.5933732'},
    force=True
)
job.wait_until_completion() # Or just wait on its completion

modified_study = Study(job.content['ID'], client)
modified_study.uid == '1.2.840.113745.101000.1008000.38048.4626.5933732'

Or keep the StudyInstanceUID

job = study.modify_as_job(
    replace={'StudyDescription': 'a description'},
    keep=['StudyInstanceUID'],
    force=True
)
job.wait_until_completion()

assert study.description == 'a description'

Source code in pyorthanc/_resources/study.py

def modify_as_job(self, remove: List = None, replace: Dict = None, keep: List = None,
                  force: bool = False, remove_private_tags: bool = False,
                  keep_source: bool = True, priority: int = 0, permissive: bool = False,
                  private_creator: str = None) -> Job:
    """Modify study and return a job

    Launch a modification job. If keep=['StudyInstanceUID'] (with `force=True`),
    then modified this study. If the StudyInstanceUID is not keeped, this creates
    a new modified study.
    Documentation: https://book.orthanc-server.com/users/anonymization.html

    Notes
    -----
    This method is useful when modifying large study or launching many
    modification jobs. The jobs are sent to Orthanc and processed according
    to the priority.

    Parameters
    ----------
    remove
        List of tag to remove
    replace
        Dictionary of {tag: new_content}
    keep
        Keep the original value of the specified tags, to be chosen among the StudyInstanceUID,
        SeriesInstanceUID and SOPInstanceUID tags. Avoid this feature as much as possible,
        as this breaks the DICOM model of the real world.
    force
        Allow the modification of tags related to DICOM identifiers, at the risk of breaking
        the DICOM model of the real world.
    remove_private_tags
        If True, remove the private tags from the DICOM instances.
    keep_source
        If False, instructs Orthanc to the remove original resources.
        By default, the original resources are kept in Orthanc.
    priority
        Priority of the job. The lower the value, the higher the priority.
    permissive
        If True, ignore errors during the individual steps of the job.
    private_creator
        The private creator to be used for private tags in Replace.

    Returns
    -------
    Job
        Return a Job object of the modification job.

    Examples
    --------
    For large study (recommended)
    ```python
    job = study.modify_as_job(replace={'StudyDescription': 'a description'})
    job.state  # You can follow the job state

    job.wait_until_completion() # Or just wait on its completion
    modified_study = Study(job.content['ID'], client)
    assert modified_study.description == 'a description'
    ```
    Or modify the StudyInstanceUID
    ```python
    job = study.modify_as_job(
        replace={'StudyInstanceUID': '1.2.840.113745.101000.1008000.38048.4626.5933732'},
        force=True
    )
    job.wait_until_completion() # Or just wait on its completion

    modified_study = Study(job.content['ID'], client)
    modified_study.uid == '1.2.840.113745.101000.1008000.38048.4626.5933732'
    ```
    Or keep the StudyInstanceUID
    ```python
    job = study.modify_as_job(
        replace={'StudyDescription': 'a description'},
        keep=['StudyInstanceUID'],
        force=True
    )
    job.wait_until_completion()

    assert study.description == 'a description'
    ```
    """
    remove = [] if remove is None else remove
    replace = {} if replace is None else replace
    keep = [] if keep is None else keep

    if 'StudyInstanceUID' in replace and not force:
        raise errors.ModificationError('If StudyInstanceUID is affected, `force` must be `True`')

    data = {
        'Asynchronous': True,
        'Remove': remove,
        'Replace': replace,
        'Keep': keep,
        'Force': force,
        'RemovePrivateTags': remove_private_tags,
        'KeepSource': keep_source,
        'Priority': priority,
        'Permissive': permissive,
    }
    if private_creator is not None:
        data['PrivateCreator'] = private_creator

    job_info = self.client.post_studies_id_modify(self.id_, data)

    # Reset cache since a main DICOM tag may have be changed
    self._main_dicom_tags = None

    return Job(job_info['ID'], self.client)

remove_empty_series()

Delete empty series.

Source code in pyorthanc/_resources/study.py

def remove_empty_series(self) -> None:
    """Delete empty series."""
    if self._child_resources is None:
        return

    for series in self._child_resources:
        series.remove_empty_instances()

    self._child_resources = [series for series in self._child_resources if series._child_resources != []]

remove_label(label)

Source code in pyorthanc/_resources/study.py

def remove_label(self, label):
    self.client.delete_studies_id_labels_label(self.id_, label)