how to find a study with no studyID

I can use the following command to list two studies for one patient:

findscu -aet AE_title -P -k 0008,0052=STUDY -k '0010,0020=patient_ID'
-k 0020,0010 dialdbserver 4440

and the results are as below. As you can see, one Study does NOT have a
studyID.
(0020,0010) SH [135 ] # 4, 1 StudyID
(0020,0010) SH (no value available) # 0, 0 StudyID


Then how to find all images for the Study with no studyID. Apparently
the following command doesn't work, instead, it will give me all the
images for both study.
findscu -aet AE_title -P -k 0008,0052=STUDY -k '0010,0020=patient_ID'
-k '0020,0010=' dialdbserver 4440


Thanks

Jie Huang

Jie

Not all modalities produce values for study id. Typically CT and MR
scanners do. Many other modalities dont. Study ID harks back to the
days when your MR or CT scanner and console were your PACS.

There wasn't a RIS or other pesky external system generating IDs that
had to be entered into the modality which would be used to identify
the study (e.g Accesion No, or Request Procedure ID) Study ID has an
importance in QR model mainly because people who were used to referring
to the study by the modality generated Study ID wanted to have it
preserved by the PACS but has little significance in a modern DICOM
environment where identifiers from cross linked HIS & RIS systems are
integrated with the modality through the MWL and used to tie the
report to the images.
If the modality doesn't generate a study id, there wont be a value for
the pacs to provide You can't uniquely match to a blank or null value
since the null valued attribute in a match key is the specification for
universal matching.

Didn't really follow your question about why you get all the images
from both studies listed (perhaps you intended to mean
0008,0052=IMAGE?) in which case you would get all images that matched
only to the patient ID because the null value for Study ID does a
universal match. If you get images from both studies, it also shows
your SCP dialdbserver doesn't truly support the hierarchical model and
is in fact a closet relational modeler, since it allowed the query to
span across two different studies down to the image level WITHOUT
requiring UNIQUE keys at the Study and Series levels

Hi, Eric:

Thanks for the information. For my original post, the second query
should be 008,0052=IMAGE. Also, now I am using StudyUID to query study
specific images.

Jie

HI,
Does modality gets Study ID from SCP(RIS) in response to Modality
worklist query. I checked PS 3.4 page 258. study ID is not present,
Study Instance UID is present. In this case , modality supposed to
generate Study ID or not? If it generates, some other modality might
get the same Study Instance UID from MWL(RIS) ( e.g Patient ordered for
many steps(CT,MR) under same study), in this case CT and MR generates
its own study ID for one Study Instance UID. How this situtaion is
avoided or is this a valid in DICOM?