Coronary angiography (CAG) is the conventional procedure, considered the gold standard for the examination of coronary arteries. Being a standardised procedure, CAG is comparatively safer but an invasive procedure. Therefore, it carries some amount of risk compared to Coronary computed tomography angiography (CTA). CTA is comparatively a new technique but is non-invasive and is reported to be as or more accurate and efficient as functional stress test in diagnosis of CAD and comparable to CAG. In this retrospective study, we have analysed data of 76 patients who underwent CTA. Further 18 patients from these 76, especially with higher percentage of stenosis underwent CAG. Thus CTA could be used as a screening (non invasive) method for exam
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