Is angiography necessary to diagnose coronary heart disease?

A carefully taken history, ECG, exercise treadmill test and at times 2D ECHO are enough to diagnose that the patient has diminished coronary circulation because of narrowing of the coronary arteries due to atherosclerosis. Coronary angiography is usually advised only when the clinical condition of the patient is such that herequires intervention by angioplasty or bypass surgery.

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