THE RESULTS OF THE APPLICATION OF 3D ROTATIONAL ANGIOGRAPHY IN THE DIAGNOSIS OF CORONARY HEART DISEASE
Introduction. Selective coronarography (CA) is the "gold standard" in the diagnosis of coronary artery disease, which requires the implementation of several orthogonal projections with selective introduction of contrast agent. 3D rotational coronary angiography (3D CA) is a new technique using a predetermined rotational angiographic tube around the patient, and allows to visualize each segment of the coronary artery segment in different projections, using a single injection of contrast agent, and subsequently build a three-dimensional model of the coronary vessels. The aim of this study is to determine the possibilities 3D CA in the diagnosis of invasive patients with ischemic heart disease, as well as a comparison of its results with the standard CA. Material and methods. 3D CA was performed in 249 patients with suspected coronary artery disease. In 33 of them were intact coronary arteries, while 216 were revealed atherosclerotic lesions who underwent a comparative analysis. Results. Complications during the research it was not. In the standard CA it was revealed 440 segments narrowed coronary arteries, and in 3D CA - 448. The estimate of the number and location of the narrowing of the coronary arteries did not reveal significant differences between the two methods, in spite of the fact the 3D CA better visualized bifurcation narrowing. Quantitative assessment of the degree of narrowing of the coronary arteries as revealed no significant differences between the two methods. However, the volume of contrast medium and dose of X-rays was significantly less at 3D CA than conventional. So when the CA on average of 66.9±9.6 ml of contrast medium was used, and in 3D CA 25.6±12.9 ml ( p < 0.005). X-ray radiation dose was 6.6±1.6 mSv versus 3.8±0.4 cubic meters ( p < 0.005) in 3D CA. A significant difference in the time of the CA and the usual 3D CA has been received. Conclusion. The significant differences between the standard CA and 3D CA to determine the degree, quantity and extent of stenosis is not, however, 3D CA reduce the amount of contrast agent administered 63.4%, the X-ray irradiation at 42.3%, without compromising image quality.