Compression Transfer syntax map

    Is there a list of the various compression methods that also includes the associated Transfer Syntax used. In the manual there is a list that lists the various schemes (shortened list as example below):
    AS (as is) * n/a as it would use the original transfer syntax.
    IS (as is) * n/a as it would use the original transfer syntax.
    UN (uncompress) *implicit/explicit big/little not defined - unsure what transfer syntax would be used.
    J2 (jpeglosslessNH14) * two transfer syntax's could fit this name 1.2.840.10008.1.2.4.57 and 1.2.840.10008.1.2.4.70 according to http://www.dicomlibrary.com/dicom/transfer-syntax/
    JK (Lossless JPEG2000) * would this be 1.2.840.10008.1.2.4.90?


    I'm having trouble figuring out what DICOM transfer syntax (DICOM tag 0002,0010) resulting files will wind up having.


    My current issue is that I used J2 and expected transfer syntax 1.2.840.10008.1.2.4.70, however the resulting files are 1.2.840.10008.1.2.4.57. These files are cause a weird issue with my rather finicky DVD burning solution. This solution accepts transfer syntax 4.57, however the included viewer only supports 4.70. Is there a way to force J2 to use transfer syntax 4.70 and/or another compression short-name to use that will result in using 4.70 as the transfer syntax?

    Hi,


    jpeg using .57 is hardcoded. I do not know the difference with .70, but you can try this:


    CompressionConverter0 = compression j2; set TransferSyntax to "1.2.840.10008.1.2.4.70"


    This would define compressor s0 as 1.2.840.10008.1.2.4.70


    Marcel

    This appears to still be encoding the same way (the file sizes are the same) but the new files have 1.2.840.10008.1.2.4.70 in dicom tag 0002,0010. There must a decent difference between the compression types because the viewer app on the burned disks is still unable to open the DICOM files. I normally publish disks by dropping DICOM files in the CD Robot's shared directory, but I played with a normal DICOM network transfer. It kept negotiating uncompressed DICOM, until I found and modified a text file of acceptable transfer syntax's. On a whim, I changed the order of the file (on the CD robot) putting 1.2.840.10008.1.2.4.70 at the top... my next DICOM transfer negotiated to J1

    Code
    Accepted compression: j1

    Sending file : C:\dicomserver\data\[removed due to technically being Identifiyable PHI].dcm

    [recompress]: recompressed with mode = j1 (strip=1)


    Resulting files were slightly larger in size, but viewable on my burned disk. They are identified as .70 compression. So J1 must be 1.2.840.10008.1.2.4.70, whereas J2 is 1.2.840.10008.1.2.4.57

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