DICOMDIR updating directory does not update extsing record

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himanshu.mistri
Posts: 18
Joined: Tue, 2018-06-05, 10:21

DICOMDIR updating directory does not update extsing record

#1 Post by himanshu.mistri »

Hello Forum,

Please help me to understand the following behavior.

Let's say I am created DICOMDIR, During that, i have added PATIENT1 STUDY.

Now I am again using the same DICOMDIR to adding PATIENT2 Study and same time I have added PATIENT1 STUDY again.

During my above steps, output DICOMDIR has a duplicate reference of the ReferencedFileID even if their names are the same.

Please see my DICOMDIR dump:-

Code: Select all

dcmdump DICOMDIR

# Dicom-File-Format

# Dicom-Meta-Information-Header
# Used TransferSyntax: Little Endian Explicit
(0002,0000) UL 194                                      #   4, 1 FileMetaInformationGroupLength
(0002,0001) OB 00\01                                    #   2, 1 FileMetaInformationVersion
(0002,0002) UI =MediaStorageDirectoryStorage            #  20, 1 MediaStorageSOPClassUID
(0002,0003) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761902.820548] #  56, 1 MediaStorageSOPInstanceUID
(0002,0010) UI =LittleEndianExplicit                    #  20, 1 TransferSyntaxUID
(0002,0012) UI [1.2.276.0.7230010.3.0.3.6.5]            #  28, 1 ImplementationClassUID
(0002,0013) SH [OFFIS_DCMTK_365]                        #  16, 1 ImplementationVersionName

# Dicom-Data-Set
# Used TransferSyntax: Little Endian Explicit
(0004,1130) CS [DCMTK_MEDIA_DEMO]                       #  16, 1 FileSetID
(0004,1200) up 408                                      #   4, 1 OffsetOfTheFirstDirectoryRecordOfTheRootDirectoryEntity
(0004,1202) up 2598                                     #   4, 1 OffsetOfTheLastDirectoryRecordOfTheRootDirectoryEntity
(0004,1212) US 0                                        #   2, 1 FileSetConsistencyFlag
(0004,1220) SQ (Sequence with explicit length #=14)     # 3278, 1 DirectoryRecordSequence
  (fffe,e000) na "Directory Record" PATIENT #=7           # 102, 1 Item
  #  offset=$408
    (0004,1400) up 2598                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 518                                      #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [PATIENT]                                #   8, 1 DirectoryRecordType
    (0008,0005) CS [ISO_IR 100]                             #  10, 1 SpecificCharacterSet
    (0010,0010) PN [123^My]                                 #   6, 1 PatientName
    (0010,0020) LO [TESTID]                                 #  12, 1 PatientID
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" STUDY #=11            # 206, 1 Item
  #  offset=$518
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 732                                      #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [STUDY]                                  #   6, 1 DirectoryRecordType
    (0008,0005) CS [ISO_IR 100]                             #  10, 1 SpecificCharacterSet
    (0008,0020) DA [20210324]                               #   8, 1 StudyDate
    (0008,0030) TM [005245.62900]                           #  12, 1 StudyTime
    (0008,0050) SH (no value available)                     #   0, 0 AccessionNumber
    (0008,1030) LO (no value available)                     #   0, 0 StudyDescription
    (0020,000d) UI [1.2.276.0.7230010.3.1.2.16777343.5255.1616572405.693406] #  56, 1 StudyInstanceUID
    (0020,0010) SH [52C0ZCZ8GZ46TQ36]                       #  16, 1 StudyID
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" SERIES #=9            # 166, 1 Item
  #  offset=$732
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 906                                      #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [SERIES]                                 #   6, 1 DirectoryRecordType
    (0008,0005) CS [ISO_IR 100]                             #  10, 1 SpecificCharacterSet
    (0008,0060) CS [US]                                     #   2, 1 Modality
    (0008,0080) LO [Unknown]                                #   8, 1 InstitutionName
    (0020,000e) UI [1.2.276.0.7230010.3.1.3.16777343.5255.1616572405.693407] #  56, 1 SeriesInstanceUID
    (0020,0011) IS [1]                                      #   2, 1 SeriesNumber
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=12            # 266, 1 Item
  #  offset=$906  refFileID="DICOM\1Q1O\1Q1O_1"
    (0004,1400) up 1180                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\1Q1O\1Q1O_1]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundImageStorage                  #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761902.820547] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [1]                                      #   2, 1 InstanceNumber
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=12            # 266, 1 Item
  #  offset=$1180  refFileID="DICOM\1Q1O\1Q1O_1"
    (0004,1400) up 1454                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\1Q1O\1Q1O_1]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundImageStorage                  #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761990.820564] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [1]                                      #   2, 1 InstanceNumber
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=14            # 290, 1 Item
  #  offset=$1454  refFileID="DICOM\1Q1O\1Q1O_2"
    (0004,1400) up 1752                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\1Q1O\1Q1O_2]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundMultiframeImageStorage        #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761904.820549] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [2]                                      #   2, 1 InstanceNumber
    (0028,0008) IS [26]                                     #   2, 1 NumberOfFrames
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
    (0028,2112) DS [31.528]                                 #   6, 1 LossyImageCompressionRatio
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=14            # 290, 1 Item
  #  offset=$1752  refFileID="DICOM\1Q1O\1Q1O_2"
    (0004,1400) up 2050                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\1Q1O\1Q1O_2]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundMultiframeImageStorage        #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761991.820565] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [2]                                      #   2, 1 InstanceNumber
    (0028,0008) IS [26]                                     #   2, 1 NumberOfFrames
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
    (0028,2112) DS [31.528]                                 #   6, 1 LossyImageCompressionRatio
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=12            # 266, 1 Item
  #  offset=$2050  refFileID="DICOM\1Q1O\1Q1O_3"
    (0004,1400) up 2324                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\1Q1O\1Q1O_3]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundImageStorage                  #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761906.820554] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [3]                                      #   2, 1 InstanceNumber
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=12            # 266, 1 Item
  #  offset=$2324  refFileID="DICOM\1Q1O\1Q1O_3"
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\1Q1O\1Q1O_3]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundImageStorage                  #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761993.820570] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [3]                                      #   2, 1 InstanceNumber
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" PATIENT #=7           # 112, 1 Item
  #  offset=$2598
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 2718                                     #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [PATIENT]                                #   8, 1 DirectoryRecordType
    (0008,0005) CS [ISO_IR 100]                             #  10, 1 SpecificCharacterSet
    (0010,0010) PN [Test^Himanshu]                        #  16, 1 PatientName
    (0010,0020) LO [TMP_SFRJL373]                           #  12, 1 PatientID
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" STUDY #=11            # 214, 1 Item
  #  offset=$2718
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 2940                                     #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [STUDY]                                  #   6, 1 DirectoryRecordType
    (0008,0005) CS [ISO_IR 100]                             #  10, 1 SpecificCharacterSet
    (0008,0020) DA [20210324]                               #   8, 1 StudyDate
    (0008,0030) TM [052405.46900]                           #  12, 1 StudyTime
    (0008,0050) SH [A1234567]                               #   8, 1 AccessionNumber
    (0008,1030) LO (no value available)                     #   0, 0 StudyDescription
    (0020,000d) UI [1.2.276.0.7230010.3.1.2.16777343.5617.1616588662.620400] #  56, 1 StudyInstanceUID
    (0020,0010) SH [R9FEYI_FBJKUFWHK]                       #  16, 1 StudyID
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" SERIES #=9            # 166, 1 Item
  #  offset=$2940
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 3114                                     #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [SERIES]                                 #   6, 1 DirectoryRecordType
    (0008,0005) CS [ISO_IR 100]                             #  10, 1 SpecificCharacterSet
    (0008,0060) CS [US]                                     #   2, 1 Modality
    (0008,0080) LO [Unknown]                                #   8, 1 InstitutionName
    (0020,000e) UI [1.2.276.0.7230010.3.1.3.16777343.5617.1616588662.620401] #  56, 1 SeriesInstanceUID
    (0020,0011) IS [1]                                      #   2, 1 SeriesNumber
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=12            # 266, 1 Item
  #  offset=$3114  refFileID="DICOM\MHIM\MHIM_1"
    (0004,1400) up 3388                                     #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\MHIM\MHIM_1]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundImageStorage                  #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761987.820558] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [1]                                      #   2, 1 InstanceNumber
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
  (fffe,e000) na "Directory Record" IMAGE #=14            # 290, 1 Item
  #  offset=$3388  refFileID="DICOM\MHIM\MHIM_2"
    (0004,1400) up 0                                        #   4, 1 OffsetOfTheNextDirectoryRecord
    (0004,1410) US 65535                                    #   2, 1 RecordInUseFlag
    (0004,1420) up 0                                        #   4, 1 OffsetOfReferencedLowerLevelDirectoryEntity
    (0004,1430) CS [IMAGE]                                  #   6, 1 DirectoryRecordType
    (0004,1500) CS [DICOM\MHIM\MHIM_2]                      #  18, 3 ReferencedFileID
    (0004,1510) UI =UltrasoundMultiframeImageStorage        #  28, 1 ReferencedSOPClassUIDInFile
    (0004,1511) UI [1.2.276.0.7230010.3.1.4.16777343.3354.1616761988.820559] #  56, 1 ReferencedSOPInstanceUIDInFile
    (0004,1512) UI =JPEGBaseline                            #  22, 1 ReferencedTransferSyntaxUIDInFile
    (0008,0008) CS [DERIVED\PRIMARY\CARDIAC]                #  24, 3 ImageType
    (0020,0013) IS [2]                                      #   2, 1 InstanceNumber
    (0028,0008) IS [22]                                     #   2, 1 NumberOfFrames
    (0028,0010) US 720                                      #   2, 1 Rows
    (0028,0011) US 1280                                     #   2, 1 Columns
    (0028,2112) DS [30.992]                                 #   6, 1 LossyImageCompressionRatio
  (fffe,e00d) na "ItemDelimitationItem for re-encoding"   #   0, 0 ItemDelimitationItem
(fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
What I am expecting is this ReferencedFileID DICOM\1Q1O\1Q1O_1 should not have multiple time as it needs to update not added again.

Below is my code Snippet.

Code: Select all

 DicomDirImageImplementation imagePlugin;
    ddir.addImageSupport(&imagePlugin);

    OFCondition result;

    /* create new general purpose DICOMDIR, append to or update existing one */
    if (opt_append)
    {
        action = "appending";
        result = ddir.updateDicomDir(opt_profile, opt_output);//ddir.appendToDicomDir(opt_profile, opt_output);
        LOGIDIR("GOOD:: DICOMDIR:: Append %s", result.text());
    }
    else {
        action = "creating";
        result = ddir.createNewDicomDir(opt_profile, opt_output, opt_fileset);
        LOGIDIR("GOOD:: DICOMDIR:: Create %s", result.text());
    }


    if (result.good())
    {
        /* set fileset descriptor and character set */
        result = ddir.setFilesetDescriptor(opt_descriptor, opt_charset);

        if (result.good()) {
            /* collect 'bad' files */
            OFList<OFFilename> badFiles;
            unsigned int goodFiles = 0;
            auto iter = fileNames.begin();
            auto last = fileNames.end();
            /* iterate over all input filenames */
            while ((iter != last) && result.good())
            {
                LOGIDIR("GOOD:: Add dicom file name is %s", iter->getCharPointer());
                /* add files to the DICOMDIR */
                 const char *fileName= iter->getCharPointer();

                string mFinalString("DICOM/");
                 mFinalString.append(fileName);
                 LOGIDIR("GOOD:: Add dicom filename is %s", mFinalString.c_str());

                //(*iter).set("",OFFalse);
                OFFilename dicomFile(mFinalString);

                result = ddir.addDicomFile(dicomFile, inputRoot);
                if (result.bad())
                {
                    LOGIDIR("ERROR:: DICOM add file %s", result.text());
                    badFiles.push_back(*iter);
                    if (!ddir.abortMode())
                    {
                        /* ignore inconsistent file, just warn (already done inside "ddir") */
                        result = EC_Normal;
                    }
                } else
                    ++goodFiles;
                ++iter;
            }

            /* evaluate result of file checking/adding procedure */
            if (goodFiles == 0)
            {
                LOGIDIR("ERROR:: no good files: DICOMDIR not created");
                result = EC_IllegalCall;
            }
            else if (!badFiles.empty())
            {
                LOGIDIR("ERROR:: file(s) cannot be added to DICOMDIR:");

                OFOStringStream oss;
                oss << badFiles.size() << " file(s) cannot be added to DICOMDIR: ";
                iter = badFiles.begin();
                last = badFiles.end();
                while (iter != last)
                {
                    oss << OFendl << "  " << (*iter);
                    ++iter;
                }
                oss << OFStringStream_ends;
                OFSTRINGSTREAM_GETSTR(oss, tmpString)
                    OFLOG_WARN(dcmgpdirLogger, tmpString);
                OFSTRINGSTREAM_FREESTR(tmpString)
            }

            /* write DICOMDIR file */
            if (result.good() && opt_write)
            {
                LOGIDIR("GOOD::  DICOMDIR  created");
                action = "writing";
                result = ddir.writeDicomDir(opt_enctype, opt_glenc);
            }
        }

    }
Let me know what I am missing.

Appreciate any solution to resolve this issue,
Last edited by himanshu.mistri on Sat, 2021-03-27, 18:49, edited 1 time in total.

J. Riesmeier
DCMTK Developer
Posts: 2496
Joined: Tue, 2011-05-03, 14:38
Location: Oldenburg, Germany
Contact:

Re: DICOMDIR updating directory does not update extsing record

#2 Post by J. Riesmeier »

Short question: did you change the SOP Instance UID of the DICOM file before the second addition?
Below is my code Snippet.
Where?

himanshu.mistri
Posts: 18
Joined: Tue, 2018-06-05, 10:21

Re: DICOMDIR updating directory does not update extsing record

#3 Post by himanshu.mistri »

Hi @ J. Riesmeier,

Yes, Unfortunately in the current system design, It will have a different DCM_SOPInstanceUID generated every time when the system generates the Dicom file.

Only following UID will remain same..DCM_StudyInstanceUID and DCM_SeriesInstanceUID.

Now it looks like you are suggesting that, the system needs to manitain the same DCM_SOPInstanceUID for the same IMAGE/CLIP data of the ultrasound.

Thanks for the hint, I will try that.

J. Riesmeier
DCMTK Developer
Posts: 2496
Joined: Tue, 2011-05-03, 14:38
Location: Oldenburg, Germany
Contact:

Re: DICOMDIR updating directory does not update extsing record

#4 Post by J. Riesmeier »

The DICOM standard says with regard to the SOP Instance UID: same value means same DICOM object, different value means different DICOM object. In your case, the filename (Referenced File ID) is not relevant but the value of SOP Instance UID.

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