How to identify heart blockages without doing angiography? answers will be appreciated.

CT Angiogram: Ct angiography is excellent at screening for coronary blockages but does not give the same spatial resolution as a direct angiogram. That said, in many cases it can be a starting point for evaluation along with stress testing. Many insurers do not cover this service except in unusual circumstances. The method is advancing quickly, and it is important to have it done with an advanced device.