Dear Aukselis
Thank you for your inquiry. The issue you describe seems to be more a problem caused by the queried archive than by iQ-VIEW. We suppose that your archive does not support the optional DICOM tag "Modalities in Study" in a query. You can check that in the archive's DICOM conformance statement in the section regarding Query/Retrieve.
iQ-VIEW will query for this tag when you make a query from your archive, but if the archive does not support this tag, it will not give a response and iQ-VIEW cannot show which modality a study is from. Therefore only a question mark is displayed.
Kind regards
Sabine Stridde
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IMAGE Information Systems Europe Ltd.