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FEASIBILITY STUDY OF LOW TUBE VOLTAGE COMPUTER TOMOGRAPHY ANGIOGRAPHY (CTA) FOR BRONCHIAL ARTERY IMAGING IN PATIENTS
Jianli An1, Yanchao Dong1, Hongtao Niu1
1Department of Interventional treatment, Qinhuangdao Municipal No. 1 Hospital, No. 258 Wenhua Road, Qinhuangdao, Hebei Province 066001, PR China.
Objective:
To investigate the application of low tube voltage computer tomography angiography (CTA) in bronchial artery (BA) imaging in hemoptysis patients.
Methods:
Between January 2017 and December 2021, 119 patients were studied, including 31 in the 80-kV group, 39 in the 100-kV group and 49 in the control group (120 kV). The CT dose index-volume (CTDIvol) (mGy) and effective dose (ED) (mSv) of each group were comparatively analysed. Image quality evaluation included the signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and subjective 5-scores.
Results:
Statistically significant differences were noted in CTDIvol, ED, SNR, CNR and image quality scores of the groups (P < 0.05). Comparative analysis showed no statistical difference in CTDIvol, ED and image quality scores between the 80- and 100-kV groups.
Conclusion:
Low tube voltage CTA is useful in BA imaging for hemoptysis patients. Tube voltages of 100 kV have better image quality and lower radiation dose.
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