Application of 70 kV Third-generation High-pitch Dual-source Coronary CT Angiography in Patients with Different Body Mass Index.

Author: Yan YI ¹ ; Jian CAO ¹ ; Lu LIN ¹ ; Lingyan KONG ¹ ; Shu JIANG ¹ ; Xiao LI ¹ ; Peijun LIU ¹ ; Ming WANG ¹ ; Man WANG ¹ ; Yun WANG ¹ ; Zhengyu JIN ¹ ; Yining WANG ¹
Author Information

1. Department of Radiology,PUMC Hospital,CAMS and PUMC,Beijing 100730,China.
Publication Type:Journal Article
MeSH: Body Mass Index; China; Computed Tomography Angiography; methods; Contrast Media; Heart Rate; Humans; Prospective Studies; Radiation Dosage; Radiographic Image Interpretation, Computer-Assisted; Signal-To-Noise Ratio
From: Acta Academiae Medicinae Sinicae 2017;39(1):42-48
CountryChina
Language:English
Abstract: Objective 　To investigate the optimized range of body mass index (BMI) selection for patients undergoing 70 kV high-pitch dual-source coronary CT angiography (CCTA) on the third-generation dual-source CT (DSCT). Methods 　Patients undergoing prospective high-pitch ultra-low contrast media (CM) CCTA on the third-generation DSCT using the automatic tube voltage selection at 70 kV were included and divided into three groups:group A,with BMI≤24 kg/m;group B,with 24 kg/m0.05). Subjective image quality in group A(Z=2.91,P=0.004) and B(Z=2.27,P=0.021) were both significantly better than that in group C. Conclusion 　The ultra-low tube voltage (70 kV) combined with ultra-low CM CCTA protocol on third-generation high-pitch DSCT may be better for patients with BMI<28 kg/m2 than those with BMI ≥28 kg/min China.