A Comaparitive Study on MSCT Coronary Angiographywith Conventional Coronary Angiography in Diadgnosis of Coronary Artery Disease in A Tertiary Care Center

Abstract

Background: The evolution of multi slice computed tomography (MSCT) in recent years has generated interest in its ability to detect the extent of obstructive CAD. The use of high-speed tube rotation, coupled with simultaneous acquisition of multiple slices and fast post processing imaging software has created the opportunity to acquire high-quality images of the entire heart within one breath-hold. Aim: To evaluate the diagnostic accuracy between dual source CT coronary angiography and invasive catheter coronary angiography with respect to site and degree of stenosis. Material & Methods:Study Design: Prospective comparative study. Study area: The study was done in the Department of Radiodiagnosis, Yashoda Hospital, Hyderabad. Study Period: 1st Feb. 2010 to 30th June 2010. Study population: patients who were recommended and referred for angiographic evaluation of suspected CAD by the Department of Cardiology. Sampling method: Purpose or convenient sampling method. Study tools: MSCT scan protocol, coronary angiography. Statistical analysis: The diagnostic performance of coronary angiography by MSCT for detecting obstructive CAD was compared to catheter angiography. The results were calculated as the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the investigation. Results: Out of 33 patients, 11 (33%) patients were females and 22 (67%) patients were males. The age of the study subjects ranged between 28 years to 80 years. In our study, most 27(81.8%)of the study population were having right dominant circulation, followed by 3 (9.09%) in left dominant circulation and remaining 3 (9.09%) were presented with codominance circulation.