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- W2380493562 abstract "Objective:To investigate the effect of injection rate of contrast medium on image quality of dual-energy virtual non-contrast CT (VNCT) of epigastrium using dual source CT.Methods:From February to May 2009,60 patients who were suspected of having intrahepatic lesions in our hospital were referred to undergo abdominal CT scan:conventional (CNCT) and arterial phase enhanced scanning with dual-energy mode (80kVp/400mA and 140kVp/95mA).The patients were classified into three groups (3ml/s,4ml/s,and 5ml/s) according to injection rate.The dedicated software of Liver VNC was used to reformat VNCT images.Image quality,radiation dose,the average CT value,signal to noise ratio,and lesion detectability of 3 groups were compared.Results:There was no statistical significance among three groups for CT numbers of the liver and abdominal aorta for VNCT images among three groups (P0.05).No statistical significance for CT numbers of spleen was found between groups 3ml/s and 4ml/s,while statistical significance was present for group 5ml/s (P≤0.05).There was no statistical significance for SNR among three groups (P0.05).Image quality of VNCT was lower but more practical for diagnosis than CNCT (P0.05),there was no statistical significance for three VNCT images (P=0.07).VNCT images of the three groups had similar performance to that of CNCT in the detection of lesions.Conclusions:Injection rate of 3ml/s is recommended to be used in the clinical setting,though having no statistical significance but possessing the tendency of increasing image quality." @default.
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- W2380493562 date "2010-01-01" @default.
- W2380493562 modified "2023-09-28" @default.
- W2380493562 title "Influence of Injection Rate of Contrast Medium on Image Quality of Dual Energy Virtual Non-constrast CT of Epigastrium Using Dual Source CT Scanner:A Preliminary Study" @default.
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