i
Class I indications for calculation of myocardial fractional flow reserve:
- stable angina pectoris + left main coronary artery stenosis of  50-90% + absence of documented cardiac ischaemia,

- stable angina pectoris + proximal LAD stenosis of  50-90% + absence of documented cardiac ischaemia,
- stable angina pectoris + impaired LV function + multi-vessel coronary artery disease + absence of documented cardiac ischaemia,
- stable angina pectoris + single patent coronary artery stenosis of  50-90% + absence of documented cardiac ischaemia.
i