Stress myocardial perfusion imaging
Patients randomised to the ischemia-guided arm underwent vasodilator stress testing within 7 days of the index STEMI. Gated-SPECT MPI was performed using a 1 or 2-day pharmacological (vasodilator) stress-rest or rest-stress protocol with 99mTc-sestamibi or 99mTc-tetrofosmin. Vasodilator stress agents used were dipyridamole, adenosine or regadenoson. At all participating sites cardiac stress procedures, acquisition and processing of MPI were performed as per ASNC guidelines.