Table 8. High Risk Anatomical (for CACT) and Ischemic (for Functional Imaging) Features Suggestive of LMCA/LMCA-equivalent Disease.

Modality	Findings suggestive of LMCA/LMCA-equivalent disease
CTCA	≥50% obstruction of LMCA
	Significant stenosis in proximal LAD and dominant LCx
	Significant stenosis in proximal LAD and dominant RCA
SPECT	Inducible ischemic area >10% of left ventricular myocardium
	Post-ischemic myocardial stunning/transient ischemic dilatation
Stess CMR	Stress perfusion deficit (e.g., >4/32 LV segments)
	Stress-induced dysfunctional motion (e.g., >3/16 LV segments)
Stress echocardiography	Stress-induced hypokinesia/akinesia (e.g., ≥3/16 LV segments)