Parser don't close correctly an undefined length sequence #181
Description
Sequence with undefined length, with one Item with defined length inside, tries to find an item delimitation item (fffe,e00d) to close the sequence, when it is not necessary according to NEMA. (http://dicom.nema.org/dicom/2013/output/chtml/part05/sect_7.5.html - Table 7.5-2)
...
(0023,1074) SL 0 # 4, 1 NumberOfUpdatesToHeader
(0023,107d) SS 0 # 2, 1 IndicatesIfStudyHasCompleteInfo
(0023,1080) SQ (Sequence with undefined length #=1) # u/l, 1 Unknown Tag & Data
(fffe,e000) na (Item with explicit length #=4) # 40, 1 Item
(0040,0000) UL 28 # 4, 1 GenericGroupLength
(0040,0255) LO (no value available) # 0, 0 PerformedProcedureTypeDescri
ption
(0040,2016) LO [^] # 2, 1 PlacerOrderNumberImagingServ
iceRequest
(0040,2017) LO [^] # 2, 1 FillerOrderNumberImagingServ
iceRequest
(fffe,e00d) na (ItemDelimitationItem for re-encoding) # 0, 0 ItemDelimitationItem
(fffe,e0dd) na (SequenceDelimitationItem) # 0, 0 SequenceDelimitationItem
(0025,0010) LO [CREATOR_0001] # 12, 1 PrivateCreator
(0025,1006) SS 19 # 2, 1 LastPulseSequenceUsed
(0025,1007) SL 29 # 4, 1 ImagesInSeries
(0025,1010) SL 0 # 4, 1 LandmarkCounter
(0025,1011) SS 29 # 2, 1 NumberOfAcquisitions
...
(0040,0244) DA [20200302] # 8, 1 PerformedProcedureStepStartDate
(0040,0245) TM [165045] # 6, 1 PerformedProcedureStepStartTime
(0040,0253) SH [8321.1234567895] # 16, 1 PerformedProcedureStepID
(0040,0254) LO [RM HAND LEFTA] # 14, 1 PerformedProcedureStepDescriptio
n
(0040,0275) SQ (Sequence with undefined length #=1) # u/l, 1 RequestAttributesSequence
(fffe,e000) na (Item with undefined length #=3) # u/l, 1 Item
(0040,0007) LO [RM HAND] # 8, 1 ScheduledProcedureStepDescri
ption
(0040,0009) SH [87654321] # 8, 1 ScheduledProcedureStepID
(0040,1001) SH [MR] # 2, 1 RequestedProcedureID
(fffe,e00d) na (ItemDelimitationItem) # 0, 0 ItemDelimitationItem
(fffe,e0dd) na (SequenceDelimitationItem) # 0, 0 SequenceDelimitationItem
(0043,0010) LO [CREATOR_0001] # 12, 1 PrivateCreator
(0043,1001) SS 4 # 2, 1 BitmapOfPrescanOptions
(0043,1002) SS 17 # 2, 1 GradientOffsetInX
(0043,1003) SS -33 # 2, 1 GradientOffsetInY
...
The parser don't stop at TAG (0023,1080) it just follow adding data to the sequence until other item delimitation item appears (fffe,e00d) as you can see in the screenshot:
The result is that all TAGs between the first sequence (0023,1080) and the second sequence (0040,0275) weren't parsed.