碘对比剂每秒注入量对64排螺旋CT冠脉成像质量的影响

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Abstract Objective To investigate the effect of the iodine contrast agent at different flow rates on the quality of coronary imaging. Methods A total of 60 patients undergoing coronary CTA examination at the First Medical Center of PLA General Hospital between September 2019 and January 2020 were randomly divided into the experimental group and control group according to the flow rate (4.0 ml/s, 5.0 ml/s), with 30 cases in each. The CT values of the aortic root, right coronary artery, left anterior descending artery, and circumflex artery were measured by two senior physicians, while the images were scored using the five-point method. The percentage of CT values that ranged from 300 to 450 Hu was calculated. Results CT values of the aortic root, right coronary artery, left anterior descending artery and circumflex artery in the control group were higher than those in the experimental group, and the difference was statistically significant (P<0.05). These values all ranged from 300 to 450 HU in the experimental group (100.0%), compared with 63.3%, 66.7%, 83.3% and 93.3% respectively in the control group. There was no significant difference in subjective evaluation scores of coronary artery image between the two groups. Conclusions The flow rate of the contrast agent can influence the image quality and CT value of coronary CTA. The blood vessel CT value is slightly lower at the flow rate of 4 ml/s, but has no effect on image diagnosis.

Key words： spiral CT coronary CTA contrast agent injection rate image quality

Received: 05 December 2020

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	SHEN Mengqiu
	LIU Jing
	LI Hui
	LI Xiaolong
	DU Qicong

Cite this article:

SHEN Mengqiu,LIU Jing,LI Hui等. Effect of iodine contrast media flow rate on coronary artery imaging quality of 64-slice spiral CT[J]. Med. J. Chin. Peop. Armed Poli. Forc., 2021, 32(7): 603-606.

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http://journal08.magtechjournal.com/Jwk_wjyx/EN/ OR http://journal08.magtechjournal.com/Jwk_wjyx/EN/Y2021/V32/I7/603

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