64層計算機斷層掃描檢測兒童左側(cè)冠狀動脈異常起源于肺動脈
[Abstract]:Objective to investigate the diagnostic value of 64-slice CT coronary angiography in children with anomalous origin of left coronary artery originated from pulmonary artery (ALCAPA). Methods the data of 64-slice CT coronary angiography in 12 children with ALCAPA confirmed by operation were retrospectively analyzed, including 4 males and 8 females, aged from 1 month to 9 years, with a median age of 7 months, and a mean weight of 7 kg with a body weight of 5 ~ 28 kg. Heart rate was not controlled in all the children before examination. Coronary artery was scanned by multislice spiral CT (MSCT) under drug sedation from the top of aortic arch to the apex of heart. Scanning parameters: retrospective ECG gating, tube voltage 80kV, tube current 100m 130mA, layer thickness 0.625mm, ball rotating speed 0.35s/ rotation, pitch 0.24. All MSCT images were read and evaluated at AW 4.3 workstation by two radiologists with more than 5 years experience in cardiovascular imaging reading in the Pediatrics Hospital affiliated to Fudan University. Results all 12 children were diagnosed as ALCAPA by 64-slice CT coronary angiography. The dose of radiation was 1.62V 2.15mSv, the heart rate was 100m / min, and the optimal time window was 35g / min at R-R interval. The left coronary artery was located in the left wall of the pulmonary artery, the right wall of the pulmonary artery, the left posterior sinus of the pulmonary artery, the posterior wall of the pulmonary artery in 3 cases, and the right coronary artery opening in the right coronary sinus of the aorta. It was proved that the main coronary artery originated from the pulmonary artery, in which the orifice was located in the left posterior sinus of the pulmonary artery in 3 cases, the opening in the left wall and the right wall in the distal side of the pulmonary artery in 3 cases, and the opening in the posterior wall of the pulmonary artery in 3 cases. Left ventricular dilatation was seen in all patients. Conclusion 64-slice CT coronary angiography can display the pathological and anatomical information of coronary artery at low radiation dose. Combined with echocardiography, the diagnostic accuracy of ALCAPA can be improved.
【作者單位】: 復旦大學附屬兒科醫(yī)院放射科;復旦大學附屬兒科醫(yī)院心血管中心;
【基金】:上海市衛(wèi)生和計劃生育委員會面上項目(201640070);上海市衛(wèi)生和計劃生育委員會青年項目(20164Y0224)資助
【分類號】:R725.4;R816.92
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