右冠狀動脈起始部-主動脈夾角變異的64層螺旋CT診斷價值
本文選題:CTA + 右冠狀動脈; 參考:《實用醫(yī)學(xué)雜志》2015年10期
【摘要】:目的:探討64層多螺旋CT(64-multistage CT,MSCT)對右冠狀動脈(right coronary artery,RCA)起始部-主動脈夾角變異的診斷價值。方法:收集我院2012年7月至2014年4月72例行64-MSCT冠狀動脈CT造影(multistage CT angiography,MSCTA),診斷為右冠狀動脈起始部-主動脈夾角變異患者,對原始圖像行多平面重組、最大密度投影、曲面重建、容積再現(xiàn)等后處理重建,測量RCA起始部主動脈夾角,分析夾角變小的形態(tài)學(xué)特征,觀察RCA斑塊情況。結(jié)果:72例患者根據(jù)夾角變異的不同,可分為3類,第1類45例,表現(xiàn)為RCA開口處狹窄,緊貼主動脈行走;第2類14例,表現(xiàn)為右冠狀動脈起源于右冠狀動脈竇,起始部緊貼冠狀動脈竇壁,呈急轉(zhuǎn)角式走行;第3類13例,表現(xiàn)為RCA起源于左冠狀動脈竇,并呈埋藏式走行于主動脈與肺動脈-右室流出道之間。MSCTA顯示72例患者右冠狀動脈起始部-主動脈夾角均不同程度變銳且行程異常;其中60例RCA存在斑塊。結(jié)論:64-MSCTA能清楚顯示右冠狀動脈起始部-主動脈夾角及右冠狀動脈起始部形態(tài)學(xué)特征;該夾角變小很可能與冠脈斑塊的形成有密切關(guān)系;也很可能是形成這種心源性猝死高風(fēng)險的一個因素。觀察該夾角的大小對臨床診治有重要的指導(dǎo)意義。
[Abstract]:Objective: to evaluate the diagnostic value of 64 slice multihelical CT (64-multistage CT) in the variation of the angle between the beginning and aorta of right coronary artery arteriole. Methods: from July 2012 to April 2014, 72 patients underwent 64-MSCT coronary angiography (multistage CT angiographic CT) and were diagnosed as patients with variant angle between right coronary artery and aorta. The original images were reconstructed with multiplanar reconstruction, maximum intensity projection and curved surface reconstruction. Volume reconstruction and other post-processing reconstruction were performed to measure the angle between the aorta at the beginning of RCA and to analyze the morphological features of the reduced angle and to observe the plaques of RCA. Results according to the variation of inclusion angle, 72 patients were divided into three groups, the first group (45 cases) showed that the opening of RCA was narrow and the aorta was close to the aorta, and the second group (14 cases) showed that the right coronary artery originated from the right coronary sinus. The initial part was close to the sinus wall of the coronary artery, with a sharp angle, and the third group of 13 cases showed that the RCA originated from the left coronary sinus. In 72 patients, the angle between the origin of the right coronary artery and the aorta became sharp and abnormal in varying degrees, and 60 of the 72 patients had plaque in RCA. Conclusion the morphological features of the origin of right coronary artery and the origin of right coronary artery can be clearly demonstrated by the ratio 64-MSCTA, which may be closely related to the formation of coronary plaque. It is also likely to be a factor in the high risk of sudden cardiac death. It is important for clinical diagnosis and treatment to observe the size of the angle.
【作者單位】: 廣東醫(yī)學(xué)院附屬醫(yī)院放射科;
【基金】:湛江市科技計劃項目(編號:2013B01215)
【分類號】:R541.4;R816.2
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