ĐÁNH GIÁ ĐẶC ĐIỂM HÌNH ẢNH CỦA CẦU CƠ ĐỘNG MẠCH VÀNH BẰNG CHỤP CLVT 256 DÃY

SUMMARY

Purpose: to evaluate and analyze the ratio of position, depth and length of the coronary myocardial bridge, the status of pre-myocardial atherosclerosis and the degree of vascular stenosis during systole by multislice-computed tomography (MSCT) images series.

Material and method: Computed tomography scan for 175 patients using a 256-row MSCT machine at Hanoi Friendship Hospital between July 2021 and August 2022. Select the best quality images in systole and diastole. Measure the length and thickness of the bridge. For each myocardial bridge segment, assess for the presence of anterior atherosclerotic plaque no more than 2 cm in length of the artery. Assess the degree of vascular stenosis during systole caused by the myocardial bridge.

Result: Most of the myocardial bridges were located in the anterior interventricular artery (LAD) (98.3%). The average values of the length and thickness of the bridge are 23.1 ± 10.5mm and 1.0 ± 1.0mm. Atherosclerosis was detected in 77 cases (accounting for 43%). The average degree of tunneling artery stenosis was 23.0% systolic.

Conclusion: MSCT 256 series has a high value in detecting bridges, determining the location, there by measuring the length, the thickness of the pons, the status of anterior atherosclerotic plaques as well as the degree of narrowing of the vessel lumen systole of the musculature.

Keywords: myocardial bridge, coronary artery, multislice computed tomography.