Table 1 Comparison of the findings between CCTA, PET Rb-82 perfusion scan and Coronary Angiography

Left Anterior Descending Artery

(LAD)

No luminal stenosis at the proximal or mid segments of the LAD coronary artery. A moderately sized diagonal branch with moderate to severe (50- 80%) stenosis at the mid segment. The distal vessel is normal and ends at the apex

Area of completely reversible and reduced tracer uptake in the apical to basal anterior, apical lateral and apical inferior indicating as stress induced ischaemia in the LAD territory

Mild disease at mid segment of the diagonal artery with myocardial bridging

LAD myocardial flow reserve of 2.44

Left Circumflex Artery (LCX)

Total (100%) occlusion at the mid segment in the artery

Area of completely reversible and reduced tracer uptake at mid to basal anterolateral with another area of partially reversible and reduced tracer uptake in the mid to basal inferolateral segments indicating as stress induced ischaemia in LCX territory

Complete occlusion of the left circumflex artery from proximal segment

LCX myocardial flow reserve of 1.03

Right Coronary Artery (RCA)

Normal artery

Area of completely reversible and reduced tracer uptake at the mid to basal inferior segments indicating as stress induced ischaemia in RCA territory

Moderate disease from proximal segment of the dominant right coronary artery

RCA myocardial flow reserve of 2.29