基于双源CT不同成像技术对冠脉CTA的检查效率和图像质量的影响

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Abstract Objective To investigate the effects of different techniques based on dual-source CT on examination efficiency and quality of coronary CT angiography (CTA). Methods A total of 107 patients undergoing coronary CTA in Tongde Hospital of Zhejiang Province from June 2018 to October 2019 were collected, while they were divided into group A (55 cases, using low-dose test technology) and group B (52 cases, using contrast agent automatic tracking technology) by simple random grouping method. The age, body mass index (BMI), heart rate, radiation dose and examination time of the two groups were recorded, and the image signal-to-noise ratio (SNR), contrast noise (CNR) and CT values of the two groups were measured, while the coronary artery image quality were evaluated and compared. Results There were no significant differences in age, BMI, heart rate, volume CT dose index, effective dose, CT of different segments of coronary artery, SNR of aortic root and each segment of coronary artery between the two groups (P ＞ 0.05). The CNR of distal right coronary artery and distal left circumflex artery in group B were superior to group A, and the differences were statistically significant (P ＜ 0.05). There was no statistically significant difference in image quality ratings between the two groups (P ＞ 0.05). The examination time of group B was significantly shorter than that of group A, and the difference was highly statistically significant (P ＜ 0.01). Conclusion Contrast agent automatic tracking technology can improve the inspection efficiency under the premise of ensuring image quality.

Key words： CT angiography Tomography Examination efficiency Radiation dose Image quality

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	GONG Wanfeng AO Weiqun JIA Yuzhu XU Zhihua WANG Jian CAO Yulin

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GONG Wanfeng AO Weiqun JIA Yuzhu XU Zhihua WANG Jian CAO Yulin. Effects of different imaging techniques based on dual-source CT on examination efficiency and image quality of coronary CTA[J]. 中国医药导报, 2020, 17(19): 20-22.

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http://www.yiyaodaobao.com.cn/EN/ OR http://www.yiyaodaobao.com.cn/EN/Y2020/V17/I19/20

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