Obstruction / Occlusion, Contrast agent-intravenous, CT-Angiography, Pulmonary vessels
A. Demchenkova, T. N. Veselova, T. Martynyuk, N. Danilov, S. K. Ternovoy, I. E. Chazova, N. Serova; Moscow/RU
20 patients had thrombotic masses in both pulmonary arteries.
17 patients in this group were evaluated areas of severe perfusion decrease in both sides (fig.
1 and 2 a,
Three patients (15%) had a moderate perfusion decrease. There were no evidences of thrombosis in two patients; however,
the depletion of vascular pattern and segmental arteries with intraluminal bands and webs was detected (fig.
d). In the one case noted a moderate decrease in perfusion in the other - marked reduction in perfusion.
The significant correlation was found between perfusion defect score and CT angiographic obstruction score in patients with CTEPH (r = 0,56,
p=0,0065) (fig.3). There were no significant correlations between estimated scores and mean pulmonary arterial pressure,
as well as with 6-minute walking distance.