ANALYSIS OF THE DENSITOMETRIC PARAMETERS OF CORONARY ARTERY STENOSIS AND AFTER THE STENTING PROCEDURE WITH THE METHOD OF VOLUME MDCT CORONARY ANGIOGRAPHY

Abstract

The aim of this study was to evaluate the densitometric parameters of coronary arteries by volume MDCT coronary angiography for coronary artery stenosis and after percutaneous coronary stenting procedures. Volume MDCT coronary angiography was performed on 38 patients aged 47 to 75 years. The study was conducted on a 320-slice Aquilion One (Toshiba,Japan) computed tomographic machine, with prospective ECG-gating. The assessments of the results of stenting and coronary artery stenosis were determined density characteristics in Hounsfield units (HU) cross-sectional area of the vessel in the central departments, at a distance of5 mmproximal and distal to the stent or stenotic areas. In the absence of significant in-stent restenosis DI was >0,45, with a DI>< 0,8, with a DI< showed signs of significant in-stent restenosis. In the absence of significant stenosis of the vessel DI was >0,8, with a DI< 0,8 showed signs of significant stenosis or occlusion of the vessel. Thus, densitometric analysis with a volume MDCT coronary angiography can be used in the evaluation of coronary artery stenosis and in-stent restenosis for improving diagnostic informativity method. Volume scanning with prospective ECG-gating can significantly reduce the radiation exposure to the patient.