Head and Neck Imaging
The Study of Scanning Scheme in Individuation and Low Dose Chest CT Using 256-slice iCT*
Author：ZHAO Bo, LIU Yong-li, LI Jing-jing
affiliation：Department of CT, the First Hospital of Qinhuangdao, Qinhuangdao 066000, Hebei Province, China
PDFAbstract
Objective To study scanning scheme in individuation and low dose chest CT using 256-slice iCT. Methods 150 patients were assigned into three groups according to body mass index(BMI):Group A (BMI<18.5, n=50, 30mAs), group B(18.5≤BMI≤25, n=50, 45mAs) and group C (BMI>25, n=50, 60mAs), Images were reconstructed by FBP and iDose4 respectively. Quantitative noise, subjectively image quality, and radiation dose were compared and analyzed statistically. Results The images reconstructed by iDose4 of each group were acceptable. The average ED for group A, B and C was (0.33±0.06)mSv, (0.52±0.12)mSv and (0.91±0.24)mSv, respectively. Conclusion Application of iDose4 iterative reconstruction technique based on BMI can achieve satisfactory scanning scheme in individuation and low dose chest CT.
【Keyword】Radiation Dose; Tomography, X-ray Computed; Iterative Reconstruction; Chest
【Chart number】R445.3
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2017.03.021
Chinese journal of CT and MRI
th15Volume， th 3 Issue
2017Year03Month
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