Storage Commitment is a DICOM service which allows a creator of images or other Composite Instances to check that they have been stored safely by a server (the SCP) before deleting from its own cache.
DICOM Structured reports are DICOM SOP Instances, organised just the same way as images etc., but which hold reports rather than images. They are typically therefore only a few kilobytes in size. They contain all the same indexing information as images, and therefore fit into the standard 4 level DICOM Hierarchy, complete with their own “psuedo-modality” of SR.
The Well-Known UIDs are Static Instance UID mostly used in normalised operations. The following is a list of all UIDs in DICOM
Many people wish to obtain a list of studies of a particular type (modality) - CR, MR etc.
Secondary Capture Images Composite Instances which are the “lowest common denominator” images available in DICOM.