ISSN 1004-4140
CN 11-3017/P
朱振华, 史浩, 杨光杰, 李海文, 吕英强. 优化扫描速度在常见体重“双低”头颈CTA中的应用[J]. CT理论与应用研究, 2019, 28(6): 709-719. DOI: 10.15953/j.1004-4140.2019.28.06.09
引用本文: 朱振华, 史浩, 杨光杰, 李海文, 吕英强. 优化扫描速度在常见体重“双低”头颈CTA中的应用[J]. CT理论与应用研究, 2019, 28(6): 709-719. DOI: 10.15953/j.1004-4140.2019.28.06.09
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ZHU Zhenhua, SHI Hao, YANG Guangjie, LI Haiwen, LV Yingqiang. The Study of Optimization for Scanning Speed with Ultra Low Dose Contrast Agent Applied and Low Dose of Radiation in Cranio-cervical CTA for Common Weight Cases[J]. CT Theory and Applications, 2019, 28(6): 709-719. DOI: 10.15953/j.1004-4140.2019.28.06.09
Citation: ZHU Zhenhua, SHI Hao, YANG Guangjie, LI Haiwen, LV Yingqiang. The Study of Optimization for Scanning Speed with Ultra Low Dose Contrast Agent Applied and Low Dose of Radiation in Cranio-cervical CTA for Common Weight Cases[J]. CT Theory and Applications, 2019, 28(6): 709-719. DOI: 10.15953/j.1004-4140.2019.28.06.09
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优化扫描速度在常见体重“双低”头颈CTA中的应用

The Study of Optimization for Scanning Speed with Ultra Low Dose Contrast Agent Applied and Low Dose of Radiation in Cranio-cervical CTA for Common Weight Cases

    摘要
  • 摘要: 目的：探讨双源CT对常见体重（79.4±14.5kg）及体质量指数（21kg/m22）人群应用低辐射剂量、（26～32mL）超低对比剂用量行头颈部联合CTA扫描的可行性。方法：将80例行头颈联合CTA扫描患者随机分成实验组（A组）和对照组（B组），每组40例。对A组触发阈值、螺距、球管旋转时间等参数进行优化，比较两组间图像质量、HeadAngio序列产生的辐射剂量。结果：A组除双侧颈内动脉外其他各段动脉客观评价指标低于B组，差异具有统计学意义（P<0.05）；对比剂用量（29.07±2.05）mL、辐射剂量均低于B组，差异具有统计学意义（P<0.05）；右锁骨下静脉和头臂静脉内对比剂浓聚程度主观评价好于B组，差异具有统计学意义（P<0.05）；两组间动脉成像效果主观评价无统计学差异（P>0.05）。结论：双源CT可以对常见体重人群进行低辐射剂量、超低对比剂用量“双低”头颈联合CTA扫描。

     

    Abstract: Objective: To study the feasibility of cranio-cervical CTA by dual source CT with low-dose radiation and contrast agent (26~32mL) for common weight (79.4±14.5kg) and BMI (21kg/m22) cases. Methods: 80 cases of cranio-cervical CTA were randomly divided into experimental group (group A) and control group (group B), with 40 cases in each group. The parameters such as trigger threshold, pitch and rotation time of group A were optimized. Then the image quality and the radiation dose produced by Head Angio sequence were compared between the two groups. Results: the objective evaluation indexes of the other segments except the bilateral internal carotid artery in group A were lower than that of group B, the difference between the two groups was statistically significantand (P<0.05). The dosage of contrast agent (29.07±2.05) mL and radiation dose were lower than that of group B,the differences between the two groups were statistically significantand (P<0.05). The subjective evaluation of the contrast agent concentration in the right subclavian vein and the cephalic vein was better than that of group B, the differences between the two groups were statistically significantand (P<0.05). The subjective evaluation of arterial images between the two groups were not statistically significant (P>0.05). Conclusion: Dual source CT can be used for cranio-cervical CTA with low radiation dose and ultra low contrast agent for common weight cases.

     

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