Effect of Different CT Imaging Methods on Radiation Dose and Image Quality in Pulmonary Artery Imaging
WANG Yonggang1, LIU Hongtao2, YU Weiwei1, XU Hesong1
1.Department of Radiology, Nanyuan Hospital Fengtai District of Beijing, Beijing 100055, China;
2.Department of Radiology, Chinese People’s Public Security University Hospital, Beijing 100055, China
Abstract：Objective The purpose of this paper is to explore the dual-source CT different imaging methods in the pulmonary artery
angiography (CTA) of the influence of radiation dose and image quality. Methods A total of 100 patients who were preliminary
suspected with pulmonary embolism in our hospital were included in this stuudy between September 2016 and August 2016. These
patients were randomly divided into four groups according to number table method with 25 in each group (n=25). The low voltage
Flash mode, executives voltage Flash mode, 80/sn 140 kV double energy scanning, and 100/sn140 kV double energy scanning were
respectively used in the four groups. Besides, the image of the subjective image quality score, and measure the groups of patients
with pulmonary CT value, SNR, CNR, CTDIvol, DLP and ED were obtained. Results There were no significant differences for
image subjective ratings among the four groups (t=1.043, P>1.043). The between groups of pulmonary artery trunk CT value, SNR,
CNR were no statistically significant difference (P>0.05). The CTDIvol, DLP, ED values were significantly statistical different
between the four groups (P<0.01), in which the group 1 accepted minimum radiation dose, and group 4 accepted the highest
radiation dose. Conclusion Dual-source CT imaging can provid the powerful basis for diagnosis, lower tube voltage Flash and the
lowest radiation dose, which is worth for further clinical use.
王永刚1，刘洪涛2，于巍伟1，徐贺松1. CT不同成像方式在肺动脉血管成像中对辐射剂量及图像质量的影响[J]. 中国医疗设备, 2018, 33(7): 65-68.
WANG Yonggang1, LIU Hongtao2, YU Weiwei1, XU Hesong1. Effect of Different CT Imaging Methods on Radiation Dose and Image Quality in Pulmonary Artery Imaging. China Medical Devices, 2018, 33(7): 65-68.
