Application of low radiation dose and low concentration of contrast agent in 320-CT coronary angiography

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

Journal of China Clinic Medical Imaging ›› 2014, Vol. 25 ›› Issue (7) : 486-488.

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Application of low radiation dose and low concentration of contrast agent in 320-CT coronary angiography

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

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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.

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Coronary disease / Tomography / spiral computed / Coronary angiography

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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