640层容积CT心脑联合血管成像的应用及辐射剂量研究

辐射防护通讯 ›› 2020, Vol. 40 ›› Issue (3): 19-24.

640层容积CT心脑联合血管成像的应用及辐射剂量研究

尚海龙¹, 雷志毅², 杨玲³, 杜红娣¹, 沈海林¹

1.上海交通大学医学院附属苏州九龙医院影像科,江苏苏州 215028;
2.青海省人民医院影像科,西宁, 810007;
3.苏州大学附属第一医院影像科,江苏苏州, 215006

收稿日期:2019-03-31 出版日期:2020-06-20 发布日期:2021-01-15
通讯作者: 杨玲,1021127948@qq.com
作者简介:尚海龙(1983—),男,2011年苏州大学医学影像与核医学专业硕士毕业,苏州大学博士在读,副主任医师。主要研究方向:心脑血管影像诊断及成像技术。
基金资助:
320排容积CT颈脑心血管联合成像的应用研究——苏州市科技局应用基础研究计划:医疗卫生部分,项目编号SYSD2012060。

Clinical Application of 640-slice Volume CT Combined with Cardiovascular and Cerebrovascular Angiograph

Shang Hailong¹, Lei Zhiyi², Yang Ling³, Du Hongdi¹, Shen Hailin¹

1. Suzhou Kowloon Hospital, Suzhou, Jiangsu 215028;
2. Qinghai Provencial People's Hospital, Xining, Qinghai, 810007;
3. The First Affiliated Hospital Soochow University, Suzhou, Jiangsu, 215006

Received:2019-03-31 Online:2020-06-20 Published:2021-01-15

摘要/Abstract

摘要： 利用640层容积CT对颈动脉、脑动脉及冠状动脉扫描一次成像,初步探讨心脑血管联合成像后的图像质量和患者所受的辐射剂量,并研究临床进一步应用的价值。其中心脑联合成像20例(1组),冠状动脉CTA 20例(2组),常规颈-脑血管CTA20例(3组),所有患者采用前瞻性心电门控,分别测量每组患者升主动脉根部、两侧颈总动脉、颈内动脉及大脑中动脉M1图像CT值及图像噪声。采用4分法评估冠状动脉图像,3分法评价颈-脑血管图像,分别记录各组扫描后患者所受辐射剂量。最终得出640层容积CT低剂量“一站式”大螺距心脑血管联合成像能同时提供满足临床诊断需要的冠状动脉及颈-脑血管图像。本研究得到了满足诊断的冠状动脉图像97.5%,未出现不能诊断的颈-脑血管图像,心脑血管联合成像的有效辐射暴露剂量仅(3.99±0.37)mSv,辐射暴露剂量完全在患者所能接受的合理范围之内,避免患者重复多次进行CTA 检查,能一次为临床治疗提供更多信息,是一种简便、快捷、无创、对比剂使用少、辐射剂量低、客观和重复性强的检查。

关键词: 640层容积CT, 冠状动脉, 头颈部血管, 联合成像

Abstract: The advantages of 640-slice volume CT were used to image carotid, cerebral and coronary arteries in one scan, to examine the image quality of combined cardio-cerebrovascular imaging and the radiation dose received by patients, and to exploreit's further value in clinical application. We studied 20 patients with combined cardiac and brain imaging (group 1), 20 patients with coronary CTA scan (group 2), and 20 patients with conventional carotid-cerebral vascular CTA (group 3). They were prospectively ECG-gated, and each group was measured separately the ascending aorta root, bilateral carotid arteries, internal carotid arteries and middle cerebral arteries M1 image CT value and image noise. The images were evaluated by 4-point method for coronary artery images and 3-point method for cervical-cerebrovascular images. The coronary artery images were evaluated by the 4-point method and the cervical-cerebrovascular images were evaluated by the 3-point method. The radiation dose received by patients in each group after scanning was recorded respectively.As a result,640-slice volume CT low-dose "one-stop" large-pitch cardio-cerebrovascular combined imaging can simultaneously provide coronary and carotid-cerebrovascular images that meet the needs of clinical diagnosis.We obtained 97.5% of coronary arterial images that meet the needs of diagnosis. There is no undiagnosable image in the neck-cerebrovascular image. The effective radiation exposure dose of combined cardio-cerebrovascular imaging is (3.99±0.37)mSv, and it is completely within the reasonable range acceptable to the patient, avoiding repeated CTA examinations. This can provide more information for clinical treatment at one time. It is therefore a simple, fast, non-invasive, low-contrast agent use, low exposure, objective and repeatable examination.

Key words: 640-slice volume CT, Coronary artery, Cervical-cerebrovascular, Combined imaging

中图分类号:

R445.3;R144

尚海龙, 雷志毅, 杨玲, 杜红娣, 沈海林. 640层容积CT心脑联合血管成像的应用及辐射剂量研究[J]. 辐射防护通讯, 2020, 40(3): 19-24.

Shang Hailong, Lei Zhiyi, Yang Ling, Du Hongdi, Shen Hailin. Clinical Application of 640-slice Volume CT Combined with Cardiovascular and Cerebrovascular Angiograph[J]. RADIATION PROTECTION BULLETIN, 2020, 40(3): 19-24.

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