===== Study file naming policy format =====
The policy is encoded in a text string. In it, keywords are replaced with identifiers obtained from a DICOM study image or attachment being stored. The string can also contain a directory separator. Characters that are not valid for file and directory names will be replaced.
  * The format for the date is YYYYMMDD where:
    * YYYY - Year (4 digits filled with 0)
    * MM - Month (2 digits filled with 0)
    * DD - Day (2 digits filled with 0)
    * Eg.: 20201202 = December 2nd, 2020
  * The format for the date and time is YYYYMMDDHHNNSS where:
    * YYYYMMDD formatting same as for date
    * HH - Hour (2 digits filled with 0)
    * NN - Minute (2 digits filled with 0)
    * SS - Second (2 digits filled with 0)
    * Eg.: 19410106134501 = January 6th, 1941, 1:45:01 PM
Keyword list:
  * //<taskId>// - Unique job identifier (64-bit number)
  * //<currentDate>// - Current date
  * //<currentDatetime>// - Current date and time
  * //<institutionId>// - Institution ID (format //prefix#number//, eg. //sk#1//)
  * //<institutionName>// - Name of the institution
  * //<institutionCountry>// - Country of the seat of the institution
  * //<institutionCounty>// - District of the seat of the institution
  * //<institutionCity>// - City of the seat of the institution
  * //<studyUid32>// - Generated unique ID for the study (32-bit number)
  * //<studyUid64>// - Generated unique ID for the study (64-bit number)
  * //<studyUid128>// - Generated unique ID for the study (128-bit number)
  * //<patientName>// - Patient name
  * //<patientId>// - Patient ID
  * //<studyId>// - Study ID (DICOM Study ID)
  * //<studyUid>// - Study UID (DICOM Study Instance UID)
  * //<studyDate>// - Study date
  * //<studyDatetime>// - Study date and time
  * //<seriesUid32>// - Generated unique ID for the series (32-bit number)
  * //<seriesUid64>// - Generated unique ID for the series (64-bit number)
  * //<seriesUid128>// - Generated unique ID for the series (128-bit number)
  * //<seriesIndex>// - Index of the series within the study (number from 0, at least 3 digits filled with 0)
  * //<seriesUid>// - Series UID (DICOM Series Instance UID)
  * //<seriesNumber>// - Series number
  * //<seriesModality>// - Series modality
  * //<seriesDate>// - Series date
  * //<seriesDatetime>// - Series date and time
  * //<imageUid32>// - Generated unique ID for the image (32-bit number)
  * //<imageUid64>// - Generated unique ID for the image (64-bit number)
  * //<imageUid128>// - Generated unique ID for the image (128-bit number)
  * //<imageIndex>// - Index of the image within the series (number from 0, at least 4 digits filled with 0)
  * //<fileIndex>// - Index of the image within the whole study (number from 0, at least 8 digits filled with 0)
  * //<attachmentUid32>// - Generated unique ID for the attachment (32-bit number)
  * //<attachmentUid64>// - Generated unique ID for the attachment (64-bit number)
  * //<attachmentUid128>// - Generated unique ID for the attachment (128-bit number)
  * //<attachmentIndex>// - Index of the attachment within the study (number from 0, at least 4 digits filled with 0)
  * //<attachmentName>// - Attachment name
Eg.:
  * //<taskId>/<seriesIndex>-<imageIndex>.dcm// - creates a directory for the task ID and stores images in it in the format series index, image index. The first image of the first series will have the filename //000-0000.dcm//.
  * //<studyDate>/<studyUid> - <patientId> (<currentDatetime>)/<seriesIndex>-<imageIndex>// - creates a directory based on the study date, creates a subdirectory with the study UID, patient ID, and current date and time. Below it, it stores images in the format of index series and index of image without extension.
  * //<taskId>/<attachmentName>// - creates a directory for the task ID and saves attachments in it under their original name, eg. //report.pdf//.