A recent patient case quiz in the Imaging Case Series focuses on transient ischemic dilation (TID) detected on nuclear stress tests. After completing the CME-certified case, you will be able to better describe the pathophysiologic mechanisms of TID, define the abnormal TID threshold based on the protocol and tracer used, and discuss the incremental diagnostic and prognostic value of TID over myocardial perfusion alone. Read more and test your knowledge on ACC.org.