Searching an optimal scanning protocol of the coronary veins on the computer tomography.

Our research included 80 studies, divided into three groups in accordance with changes in the standard protocol of CT angiography. The control group (the first) consisted of 25 retrospective studies of CT coronary arteries. The second group consists of prospective 15 coronary artery investigations with an increased threshold in the bolus-tracking and added second scan phase. The third group included 40 prospective studies of patients referred to CT of pulmonary veins. In the third group, the bolus tracking threshold was lowered, the bolus tracking area...

The time delay of the start scanning the arterial phase was significantly different in the second and third groups as compare control group. However, there were not differences between the time delay of scanning in the second and third groups. Scanning of the venous phase in the second and third groups was in the same time (Fig. 1). The average density of blood in coronary sinus in the arterial phase was not significantly different in the three groups (p>0.05). Statistically significant differences between the second...

the usage of a standard protocol CT scan of the coronary arteries with adding biphasic sequential injection of contrast agent and additional scanning in the venous phase allows to obtain high-quality images of the venous bed of the heart along the length.

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