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3.4.4.1 PRI-CTMR-MOD12 Class Profile
3.4.4.1.1 SOP Classes and Transfer Syntax
This class of Application Profiles is based on the Media Storage Service Class (See PS3.4).
SOP Classes and corresponding Transfer Syntax supported by the PRI-CTMR-MOD12
Application Profiles is specified in the Table 3.3.3.1.1-1.
Note: The MOD Archive Application chooses the JPEG Lossless compression (selection
value 1) as the default transfer syntax for storing images on the media. But the transfer
syntax is selectable on a per media basis at install time using a method defined by the
Application.
The SOP instance files in the Media File-set in the PRI-CTMR-MOD12 profile uses a non-
standard JPEG compression process resulting in interoperability problems when decoded using
readily available industry decompression routines. See section 3.4.2 for details of the encoding
problem unique to the PRI-CTMR-MOD12 profile.
3.4.4.1.2 Physical Media and Media Formats
The CT/MR Application Profiles in the PRI-CTMR-MOD12 require the 130mm 1.2GB 512 Byte
per Sector Magneto-Optical Rewriteable physical media with the PC File System as defined in
PS3.12.
3.4.4.1.3 Logical Format
The PRI-CTMR-MOD12 Application profile media format conforms to the Logical Format
specification in PS3.12. The table 3.3.3.1.3-1 defines the specific values used for this profile.
3.4.4.1.4 Directory Information in DICOMDIR
Conformant Application Entities shall include in the DICOMDIR File a Basic Directory IOD
containing Directory Records at the Patient and subsidiary levels appropriate to the SOP
Classes in the File-set. All DICOM files in the File-set incorporating SOP Instances defined for
the specific Application Profile shall be referenced by the Directory Records.
All DICOM SOP Instance files in the File-set are stored in the MSDOS filesystem subdirectory
\GEMS and are referenced from the DICOMDIR directory records.
Refer to Appendix C for a complete listing of all the optional modules and optional
attributes used in the DICOMDIR definition. Please note that the mandatory attributes in
each of the directory records as mentioned in Part 3 Addendum (Basic Directory
Information Object Definition) are not listed in the appendix, but are supported by the
implementation.
Directory records found in the PRI-CTMR-MOD12 profile do not contain the Attribute
“Frame of Reference” (0020,0052). This Attribute was specified as Required after the first
release of this Application Profile.
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