Problem with worklist and umlauts

[Torsten]

Hello,

we are using wlmscpfs (from dcmtk 3.5.3) as our worklist server. We are getting the following errors if the query to our worklist server contains german umlauts.

Code: Select all

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Cleaned up after child (4319)

Association Received (91.0.198.1:L7-1532YU1 -> WORKLIST)

Association Acknowledged (Max Send PDV: 32756)

Received C-FIND Request, MessageID 38.

Find SCP Request Identifiers:

# Dicom-Data-Set
# Used TransferSyntax: LittleEndianExplicit
(0008,0005) CS (no value available)                     #   0, 0 SpecificCharacterSet
(0008,0050) SH (no value available)                     #   0, 0 AccessionNumber
(0008,0090) PN (no value available)                     #   0, 0 ReferringPhysiciansName
(0008,1110) SQ (Sequence with explicit length #=0)      #   0, 1 ReferencedStudySequence
(fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
(0008,1120) SQ (Sequence with explicit length #=0)      #   0, 1 ReferencedPatientSequence
(fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
(0010,0010) PN [Mü* ]                                   #   4, 1 PatientsName
(0010,0020) LO (no value available)                     #   0, 0 PatientID
(0010,0030) DA (no value available)                     #   0, 0 PatientsBirthDate
(0010,0032) TM (no value available)                     #   0, 0 PatientsBirthTime
(0010,0040) CS (no value available)                     #   0, 0 PatientsSex
(0010,1000) LO (no value available)                     #   0, 0 OtherPatientIDs
(0010,1020) DS (no value available)                     #   0, 0 PatientsSize
(0010,1030) DS (no value available)                     #   0, 0 PatientsWeight
(0010,2000) LO (no value available)                     #   0, 0 MedicalAlerts
(0010,2110) LO (no value available)                     #   0, 0 ContrastAllergies
(0010,2160) SH (no value available)                     #   0, 0 EthnicGroup
(0010,21c0) US (no value available)                     #   0, 0 PregnancyStatus
(0020,000d) UI (no value available)                     #   0, 0 StudyInstanceUID
(0032,1032) PN (no value available)                     #   0, 0 RequestingPhysician
(0032,1033) LO (no value available)                     #   0, 0 RequestingService
(0032,1060) LO (no value available)                     #   0, 0 RequestedProcedureDescription
(0032,1064) SQ (Sequence with explicit length #=0)      #   0, 1 RequestedProcedureCodeSequence
(fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
(0038,0010) LO (no value available)                     #   0, 0 AdmissionID
(0038,0300) LO (no value available)                     #   0, 0 CurrentPatientLocation
(0040,0100) SQ (Sequence with explicit length #=1)      #  92, 1 ScheduledProcedureStepSequence
  (fffe,e000) na (Item with explicit length #=10)         #  84, 1 Item
    (0008,0060) CS (no value available)                     #   0, 0 Modality
    (0040,0001) AE (no value available)                     #   0, 0 ScheduledStationAETitle
    (0040,0002) DA (no value available)                     #   0, 0 ScheduledProcedureStepStartDate
    (0040,0003) TM (no value available)                     #   0, 0 ScheduledProcedureStepStartTime
    (0040,0006) PN (no value available)                     #   0, 0 ScheduledPerformingPhysiciansName
    (0040,0007) LO (no value available)                     #   0, 0 ScheduledProcedureStepDescription
    (0040,0008) SQ (Sequence with explicit length #=0)      #   0, 1 ScheduledProtocolCodeSequence
    (fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
    (0040,0009) SH (no value available)                     #   0, 0 ScheduledProcedureStepID
    (0040,0010) SH (no value available)                     #   0, 0 ScheduledStationName
    (0040,0011) SH (no value available)                     #   0, 0 ScheduledProcedureStepLocation
  (fffe,e00d) na (ItemDelimitationItem for re-encoding)   #   0, 0 ItemDelimitationItem
(fffe,e0dd) na (SequenceDelimitationItem for re-encod.) #   0, 0 SequenceDelimitationItem
(0040,1001) SH (no value available)                     #   0, 0 RequestedProcedureID
(0040,1010) PN (no value available)                     #   0, 0 NamesOfIntendedRecipientsOfResults
=============================
Checking the search mask.
WlmDataSource::CheckNonSequenceElementInSearchMask : Error: Matching key attribute (PatientsName) with invalid value encountered in the search mask.
  - Unsupported (non-sequence) attribute encountered in the search mask.
    This attribute will not be existent in any result dataset.
=============================
Worklist Find SCP Response 1 [status: Failed: IdentifierDoesNotMatchSOPClass]
  Status Detail:
(0000,0901) AT (0010,0010)                              #   4, 1 OffendingElement
  Status Detail:
(0000,0902) LO [Invalid Character Repertoire for datatype PN] #  44, 1 ErrorComment
Association Aborted

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Any ideas what we could do to handle these queries correctly? Or is that query from our modality incorrect?

Thanks in advance,
Torsten

[Jörg Riesmeier]

I guess the attribute SpecificCharacterSet should specify the character set used for the query keys (e.g. "ISO_IR 100").

[Marco Eichelberg]

Exactly. SpecificCharacterSet is not a query key, but an attribute that indicates that character set in which the query is encoded. This attribute must never be empty when contained in the query.