The use case shown in Figure LLLL.2-1 is an example of how a performed object can capture a manual contrast infusion. The operator performs a manual administration of contrast for a study. The operator selects the patient from the contrast infusion manager (available through modality worklist) and reports the minimum parameters about the injection. The contrast infusion manager then generates a Performed Imaging Administration SR object and sends to the Contrast Usage Consumer such as PACS.