摘要
目的：探讨低辐射剂量低对比剂浓度冠脉成像的可行性。方法：对临床拟诊为冠心病的200例患者随机分为A、B、C 3组，A组（120 kV，270 mgI/mL）65例，B组（120 kV，350 mgI/mL）65例，C组（100 kV，270 mgI/mL）70例。采用320排CT行前瞻性心电门控扫描，评价试验所得到的3组图像质量以及患者所接受的有效辐射剂量。结果：3组图像冠脉评分无显著差异（P＞0.5），图像噪声和增强效果有明显差异（P＜0.05），但都可满足诊断。患者所接受的辐射剂量有显著差异（P＜0.01），C组是其中的最低值组。结论：低辐射剂量低对比剂浓度可用于CT冠脉成像，并且具有明显的优越性。
Abstract
Objective: To evaluate the effect of low radiation dose and low concentration of contrast agent for coronary computed tomography(CCTA) with 320-detector CT. Methods: 200 patients with clinically suspected coronary disease were randomly divided into A, B, C three groups. Group A(120 kV, 270 mgI/mL) 65 cases, group B(120 kV, 350 mgI/mL) 65 cases, group C(100 kV, 270 mgI/mL) 70 cases, and performed CCTA with prospective ECG gating by using 320-detector CT. Image and the optimal radiation dose were evaluated. Results: Coronary images of three groups had no significant difference(P>0.5). Image noise and enhancement was significantly different(P<0.05), but it can be used for diagnosis. The radiation dose received by the patient had a significant difference(P<0.01), and the dose received by group C is the lowest. Conclusion: The 320 multi-slice CT with low radiation dose and low concentration of contrast agent can be used for CCTA, and has obvious advantages.
关键词
冠状动脉疾病 /
体层摄影术 /
螺旋计算机 /
冠状血管造影术
Key words
Coronary disease /
Tomography /
spiral computed /
Coronary angiography
成满平;牛娟琴;杜林芝;罗 樱;郝晓东;李欣怡;杨菊红;强海霞;韩月东.
低辐射剂量低对比剂浓度在320排CT冠脉成像中的应用[J]. 中国临床医学影像杂志. 2014, 25(7): 486-488
CHENG Man-ping;NIU Juan-qin;DU Lin-zhi;LUO Ying;HAO Xiao-dong;LI Xin-yi;YANG Ju-hong;QIANG Hai-xia;HAN Yue-dong.
Application of low radiation dose and low concentration of contrast agent in 320-CT coronary angiography[J]. Journal of China Clinic Medical Imaging. 2014, 25(7): 486-488
中图分类号：
Ｒ543.3
R814.42
Ｒ814.43
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