Feasibility study of low tube voltage and hybrid iterative reconstruction algorithm at MSCT:Experimental analysis of evaluating radiation dose and image quality on excretory phase images of infant swine urography

doi:10.3969/j.issn.1006-7795.2017.04.017

Abstract

Abstract: Objective To optimize the scanning parameters for CT with lower radiation dose on the infant pigs' urinary which mimicks the baby's urinary of human being.Methods Five pigs were undertaken CT scan with the conventional 120 kV,80 kV and 80 kV with a hybrid iterative reconstruction algorithm. The estimated effective radiation of each protocol was compared with via the student t test. Scores and the contrast-to-noise-ratio(CNR)of the 120 kV,80 kV,and hybrid iterative reconstructed 80 kV images were evaluated. Results The effective radiation was 71% lower during CT excretory phase scanning with the 80 kV protocol than with the 120 kV protocol. There was no significant difference in the CNR of any of the regions of interest between 80 kV with iterative reconstruction and 120 kV(P>0.05). There was no significant difference in the quality of images obtained from the conventional 120 kV scanning and low dose group of 80 kV with iterative reconstruction scanning images.Conclusion A low tube voltage and the hybrid iterative reconstruction algorithm can dramatically decrease radiation with adequate image quality in normal infant pigs' uninary excretory phase scanning.

Key words: tomography, X-ray computed, radiation dosage

CLC Number:

R445.3

Hu Bin, Chen Jingjing, Xu Wenjian, Xu Qi, Li Xiaofei. Feasibility study of low tube voltage and hybrid iterative reconstruction algorithm at MSCT:Experimental analysis of evaluating radiation dose and image quality on excretory phase images of infant swine urography[J]. Journal of Capital Medical University, 2017, 38(4): 576-579.

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URL: https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/10.3969/j.issn.1006-7795.2017.04.017

https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/Y2017/V38/I4/576

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