How obtain specific TAG (0008,0000)

[La Zonz']

Hi,

I am trying to obtain this tag for remove it : (0008,0000) UL #   4, 1 IdentifyingGroupLength

My code :

File dcmFile = new File(finalFile);

final DicomInputStream in = new DicomInputStream(dcmFile);

DicomElement e = null;

DicomObject o = in.readDicomObject();

e = o.get(0x00080000);

if (e!=null){

  o.remove(0x00080000);

  System.out.println("(0008,0000) has been deleted");

}

dcmFile = new File(finalFile);

FileOutputStream fos = new FileOutputStream(f);

BufferedOutputStream bos = new BufferedOutputStream(fos);

DicomOutputStream dos = new DicomOutputStream(bos);

dos.writeDicomFile(o);

dos.close();

in.close();

In fact my problem is to acces TAG.

With in.readDicomObject() I have not  (0008,0000) in my DicomObject.

How could i do this?

thxs

[Bradley Ross]

I don't believe that 0008,0000 is a Dicom tag.  It appears to be part of formatting of the file.  Was there a number between the UL and the # sign that would have been the length of group 8.  However, it apparently will appear in the listings of some of the programs that dump Dicom files.

[La Zonz']

Ok but my problem is when I send a dicom file with TransferSyntax : 1.2.840.10008.1.2 - Implicit VR Little Endian   to my PACS and I try to retrieve it, my file have some GroupLength TAG added.

(0008,0000) UL 310                                      #   4, 1 IdentifyingGroupLength
(0018,0000) UL 8                                        #   4, 1 AcquisitionGroupLength

(0020,0000) UL 176                                      #   4, 1 ImageGroupLength
(0028,0000) UL 190                                      #   4, 1 ImagePresentationGroupLength

With all other TransferSyntax there is no problem.

I don't understand.

Have you an idea to remove these tags ?

[Arnold Maderthaner]

That tags just describe the length of the coming group so it shouldn't do anything to your application as those are standard tags.

[La Zonz']

In fact I send and retrieve my dicom file and made a cheksum for verify authenticity.

If GroupLength TAGs is present in my retrieve file, my checksum is different.

I have solve my problem with another soft (pixelmed) which can delete all GroupLength TAGs.

[Arnold Maderthaner]

you shouldn't use md5sum for verifying the file as it won't work with most of vendors as everyone can add tags or use other things like padding bytes