Modality worklist for Siemens CT

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bdmathis
Posts: 11
Joined: Wed, 2007-09-19, 22:22
Location: Colorado, USA

Modality worklist for Siemens CT

#1 Post by bdmathis »

Hello
I am providing a MWL for a Siemens Somatom Emotion 6-slice CT. The list of worklist items is presented to the user, but the CT says that the list items are not usable because of missing required information.
I have gone through the DICOM Conformance statement for the CT device and made sure that I have all type 1 elements present. Below is an example DUMP file. Does anyone have any pointers for me? Thanks very much!
Brady

Code: Select all

# Dicom-File-Format

# Dicom-Meta-Information-Header
# Used TransferSyntax: LittleEndianExplicit
(0002,0000) UL 196                                      #   4, 1 MetaElementGroupLength
(0002,0001) OB 00\01                                    #   2, 1 FileMetaInformationVersion
(0002,0002) UI [1.2.276.0.7230010.3.1.0.1]              #  26, 1 MediaStorageSOPClassUID
(0002,0003) UI [1.2.276.0.7230010.3.1.4.4127876750.7328.1200411292.1] #  52, 1 MediaStorageSOPInstanceUID
(0002,0010) UI =LittleEndianExplicit                    #  20, 1 TransferSyntaxUID
(0002,0012) UI [1.2.276.0.7230010.3.0.3.5.4]            #  28, 1 ImplementationClassUID
(0002,0013) SH [OFFIS_DCMTK_354]                        #  16, 1 ImplementationVersionName

# Dicom-Data-Set
# Used TransferSyntax: LittleEndianExplicit
(0008,0050) SH [1192711]                                #   8, 1 AccessionNumber
(0008,0090) PN (no value available)                     #   0, 0 ReferringPhysiciansName
(0008,1050) PN (no value available)                     #   0, 0 PerformingPhysiciansName
(0010,0010) PN [Anna^Ferdinand]                         #  14, 1 PatientsName
(0010,0020) LO [57900]                                  #   6, 1 PatientID
(0010,0030) DA [19220914]                               #   8, 1 PatientsBirthDate
(0010,0040) CS [M]                                      #   2, 1 PatientsSex
(0010,2000) LO (no value available)                     #   0, 0 MedicalAlerts
(0010,2110) LO (no value available)                     #   0, 0 ContrastAllergies
(0020,000d) UI [144]                                    #   4, 1 StudyInstanceUID
(0032,1032) PN (no value available)                     #   0, 0 RequestingPhysician
(0040,0100) SQ (Sequence with explicit length #=1)      # 118, 1 ScheduledProcedureStepSequence
  (fffe,e000) na (Item with explicit length #=10)         # 110, 1 Item
    (0008,0060) CS [USA]                                    #   4, 1 Modality
    (0040,0001) AE [SSD4000]                                #   8, 1 ScheduledStationAETitle
    (0040,0002) DA [20071219]                               #   8, 1 ScheduledProcedureStepStartDate
    (0040,0003) TM [192711]                                 #   6, 1 ScheduledProcedureStepStartTime
    (0040,0006) PN (no value available)                     #   0, 0 ScheduledPerformingPhysiciansName
    (0040,0007) LO (no value available)                     #   0, 0 ScheduledProcedureStepDescription
    (0040,0009) SH [144]                                    #   4, 1 ScheduledProcedureStepID
    (0040,0010) SH (no value available)                     #   0, 0 ScheduledStationName
    (0040,0011) SH (no value available)                     #   0, 0 ScheduledProcedureStepLocation
    (0040,0012) LO (no value available)                     #   0, 0 PreMedication
  (fffe,e00d) na (ItemDelimitationItem for re-encoding)   #   0, 0 ItemDelimitationItem
(fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
(0040,1001) SH [144]                                    #   4, 1 RequestedProcedureID
(0040,1003) SH (no value available)                     #   0, 0 RequestedProcedurePriority


AndreasKnopke
Posts: 49
Joined: Wed, 2005-02-16, 16:27

#2 Post by AndreasKnopke »

(0008,0060) CS [USA] # 4, 1 Modality
???
Most modalities either query for their own identifier (in your case "CT") or their own station name. "USA" will probably be ignored by your scanner.

Another issue (at least with SIEMENS Syngo) is, that (0008,0015) SpecificCharacterSet is missing. I know from our SIEMENS modalities that although they do not include this attribute in the c-find, they require it in the response.

If this does not help, examine the c-find request from your modality and you will probably see what attributes are required.

Regards,
Andreas

bdmathis
Posts: 11
Joined: Wed, 2007-09-19, 22:22
Location: Colorado, USA

#3 Post by bdmathis »

Andreas - Thanks for taking time to reply.
First, I obviously made a hasty selection of this sample worklist item. It happens to be for the wrong modality...oops!
Also, thanks for the tip on (0008,0015) - I'll give that a try.
Brady

bdmathis
Posts: 11
Joined: Wed, 2007-09-19, 22:22
Location: Colorado, USA

#4 Post by bdmathis »

Just a follow-up for everyone here: The Specific Character Set attribute was exactly the solution.
Many thanks once again, Andreas!

rbeaulieu
Posts: 7
Joined: Wed, 2009-07-29, 14:19

Re: Modality worklist for Siemens CT

#5 Post by rbeaulieu »

Can you provide the text for dump file working with Siemens Somatom CT-Scan ?

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