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- W4281943592 abstract "Abstract To investigate the application of low tube voltage CTA in bronchial artery(BA) imaging in patients with hemoptysis. 119 patients with hemoptysis in our hospital from January 2017 to December 2021 were studied, including 31 patients in the 80kV group (tube voltage: 80kV), 39 patients in 100kV group (tube voltage: 100kV) and 49 patients in the control group (tube voltage: 120kV). The mean CT dose index (CTDIvol, mGy) and effective radiation dose (ED, mSv) of each group were compared and analyzed, and the image quality was evaluated by objective noise measurement: signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) and subjective 5-score method, The differences of CTDIvol, ED, SNR, CNR and image scores between the groups were compared, and the matching rate was analyzed with the blood vessels displayed by DSA. There were significant statistical differences in CTDIvol, ED, SNR, CNR, and image quality scores among the three groups (P<0.05). The comparison results between the groups showed that there was no statistical difference in CTDIvol, ED, and image quality scores between the 80kV and 100kV groups. The matching rates between the images of the three groups and DSA angiography were 96.80%, 97.40%, and 95.90% respectively. I t is feasible to use low tube voltage CTA in BA imaging of patients with hemoptysis. The tube voltage of 100kV has the better image quality and lower radiation dose." @default.
- W4281943592 created "2022-06-13" @default.
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- W4281943592 date "2022-06-01" @default.
- W4281943592 modified "2023-10-16" @default.
- W4281943592 title "Feasibility study of low tube voltage CTA for bronchial artery imaging in patients with hemoptysis" @default.
- W4281943592 doi "https://doi.org/10.21203/rs.3.rs-1702453/v1" @default.
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