Abstract：Objective To investigate the effect of energy spectrum computed tomography (CT) single energy imaging and conventional enhanced CT on the image quality of portal vein angiography.Methods From June 2020 to June 2021,100 patients with hepatitis and liver cirrhosis with abnormal portal system or gastroesophageal varices confirmed by endoscopy in the imaging department of Ganzhou people′s Hospital from June 2020 to December 2021 were selected as the research objects.They were divided into study group (n=50) and control group (n=50) by random number table method.The study group performed energy spectrum CT single energy imaging (GSI) enhanced scan,and the control group took conventional enhanced CT scan.The general conditions of the two groups,effective radiation dose,volumetric CT dose index (CTDIvol),contrast medium iodine intake,objective and subjective scores of image quality were counted.Results The effective radiation dose and CTDIvol of the study group were not significantly different from the control group (P＞0.05).The contrast agent iodine intake amount was lower than the control group,the difference was statistically significant (P＜0.05);the CT value of the main portal vein,and the right portal vein in the study group were greater than that of the control group,the CT value of the left portal vein was lower than that of the control group,and the noise of the portal vein,the left portal vein and the right portal vein were lower than the control group,the contrast-to noise ratio (CNR) of the intrahepatic portal vein was higher than that of the control group,and the differences were statistically significant (P＜0.05).Compared with the control group,the CNR of the extrahepatic portal vein and subjective score were not statistically different (P＞0.05).Conclusion Under the condition of equivalent radiation dose,the image quality of energy spectrum CT single-energy imaging in portal vein vascular imaging is better than that of conventional enhanced CT,and the contrast agent iodine intake is less.
邓星星. 能谱CT单能量成像与常规增强CT对门静脉血管成像图像质量的对比研究[J]. 中国当代医药, 2022, 29(7): 107-110.
DENG Xingxing. Comparative study on the image quality of portal vein angiography between energy spectrum CT single energy imaging and conventional enhanced CT. 中国当代医药, 2022, 29(7): 107-110.
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