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Comparison on radiation effective dose and image quality of right coronary artery on prospective ECG-gated method between 320 row CT and 2nd generation (128-slice) dual source CT.
Journal of Applied Clinical Medical Physics ( IF 2.0 ) Pub Date : 2020-06-08 , DOI: 10.1002/acm2.12911
Ren-Feng Li 1 , Chang-Long Hou 1 , Huang Zhou 1 , Yan-Shan Dai 1 , Li-Qin Jin 1 , Qian Xi 1 , Jian-Hua Zhang 1
Affiliation  

This retrospective study was to compare the image quality of right coronary artery (RCA) and effective radiation dose on prospective ECG‐gated method between 320 row computed tomography (CT) and 2nd generation (128‐slice) dual source CT. A total of 215 candidates underwent CT coronary angiography using prospective ECG‐gated method, 120 patients enrolled in 320 row CT group, and 95 patients in dual source CT group. We divided RCA image quality scores as 1/2/3/4, which means excellent/good/adequate/not assessable and heart rates were considered, as well as the radiation dose. There is no statistically significant difference of RCA image quality of Score 1/2 between 320 row CT and 2nd generation dual source CT, but lower heart rate (<70/min) improved RCA image quality. Meanwhile, the 2nd generation dual source CT scan have significant lower radiation dose. For patients with high level heart rate variation, both prospective ECG‐gated method of 320 row CT scan (Toshiba) and 2nd generation dual source CT scan (Siemens) basically provided good image quality on RCA. There is an advantage of effective radiation dose reduction in prospective ECG‐gated method using the 2nd generation dual source CT scan. After the iodine contrast agent was injected into elbow vein, the threshold triggering method was used to carry out prospective gated scanning, and the acquired fault image was reconstructed by the standard post‐processing software of each manufacturer. The radiation dose value is obtained through the dose report automatically generated after each scan.

中文翻译:

在320行CT和第二代(128层)双源CT之间采用前瞻性ECG门控方法比较右冠状动脉的放射有效剂量和图像质量。

这项回顾性研究旨在比较前瞻性ECG门控方法在320行计算机断层扫描(CT)和第二代(128层)双源CT之间的右冠状动脉(RCA)图像质量和有效放射剂量。共有215名候选人采用前瞻性ECG门控方法进行了CT冠状动脉造影,其中320排CT组入组120例患者,双源CT组入组95例。我们将RCA图像质量得分除以1/2/3/4,这意味着优异/良好/足够/无法评估,并考虑了心率以及辐射剂量。320行CT和第二代双源CT之间的评分1/2的RCA图像质量在统计学上没有显着差异,但是较低的心率(<70 / min)改善了RCA图像质量。与此同时,第二代双源CT扫描的辐射剂量明显较低。对于心率变化较大的患者,前瞻性ECG门控320行CT扫描(Toshiba)和第二代双源CT扫描(Siemens)基本上都能在RCA上提供良好的图像质量。使用第二代双源CT扫描的前瞻性ECG门控方法可有效降低辐射剂量。在将碘造影剂注入肘静脉后,使用阈值触发方法进行前瞻性门控扫描,并使用每个制造商的标准后处理软件重建获取的故障图像。辐射剂量值是通过每次扫描后自动生成的剂量报告获得的。320行CT扫描的前瞻性心电门控制(Toshiba)和第二代双源CT扫描(Siemens)基本上都为RCA提供了良好的图像质量。使用第二代双源CT扫描的前瞻性ECG门控方法可有效降低辐射剂量。在将碘造影剂注入肘静脉后,使用阈值触发方法进行前瞻性门控扫描,并使用每个制造商的标准后处理软件重建获取的故障图像。辐射剂量值是通过每次扫描后自动生成的剂量报告获得的。320行CT扫描的前瞻性心电门控制(Toshiba)和第二代双源CT扫描(Siemens)基本上都为RCA提供了良好的图像质量。使用第二代双源CT扫描的前瞻性ECG门控方法可有效降低辐射剂量。在将碘造影剂注入肘静脉后,使用阈值触发方法进行前瞻性门控扫描,并使用每个制造商的标准后处理软件重建获取的故障图像。辐射剂量值是通过每次扫描后自动生成的剂量报告获得的。使用第二代双源CT扫描的前瞻性ECG门控方法可有效降低辐射剂量。在将碘造影剂注入肘静脉后,使用阈值触发方法进行前瞻性门控扫描,并使用每个制造商的标准后处理软件重建获取的故障图像。辐射剂量值是通过每次扫描后自动生成的剂量报告获得的。使用第二代双源CT扫描的前瞻性ECG门控方法可有效降低辐射剂量。在将碘造影剂注入肘静脉后,使用阈值触发方法进行前瞻性门控扫描,并使用每个制造商的标准后处理软件重建获取的故障图像。辐射剂量值是通过每次扫描后自动生成的剂量报告获得的。
更新日期:2020-06-08
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