Table 1. Comparison between True Inducible Perfusion Defect and Dark Banding Artifacts Adapted from Reference (2).

	True Inducible Perfusion Defect	Dark Banding Artifacts
Timing of appearance	Occurs first when contrast reaches LV myocardium	Typically occur first and are most prominent when contrast arrives in LV blood pool
	Present at stress but not at rest	Present at stress and at rest with no corresponding scar
Signal	Shows increase in signal compared with baseline, even if it is small	Show reduction in signal compared with baseline myocardial signal
Duration	Persists after peak myocardial enhancement and usually for more than 4 heart beats	Persist only transiently before peak myocardial contrast enhancement and often for less than 6 heart beats
Size	More than one pixel wide	Approximately one pixel wide
Location and changes	Most noticeable in subendocardial portion of myocardium. Often exhibits as transmural defect. Over time, defect regresses from epicardium toward subendocardium	Appear in subendocardial portion of myocardium and in phase-encoding direction
Conformation to coronary vascular territory	Corresponds to distribution territory of coronary arteries	No

LV = left ventricular