IR@PKUHSC  > 北京大学临床肿瘤学院
学科主题临床医学
Evaluation of dose reduction and image quality in chest CT using adaptive statistical iterative reconstruction with the same group of patients
Qi, L-P; Li, Y.; Tang, L.; Li, Y-L; Li, X-T; Cui, Y.; Sun, Y-S; Zhang, X-P
刊名BRITISH JOURNAL OF RADIOLOGY
2012-10-01
DOI10.1259/bjr/66327067
85期:1018页:E906-E911
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Radiology, Nuclear Medicine & Medical Imaging
资助者National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
研究领域[WOS]Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]FILTERED BACK-PROJECTION ; TUBE CURRENT MODULATION ; COMPUTED-TOMOGRAPHY ; INITIAL-EXPERIENCE ; PEDIATRIC-PATIENTS ; RADIATION ; ENHANCEMENT ; ANGIOGRAPHY
英文摘要

Objectives: The objective of this study was to compare the image quality and radiation dose of chest CT images reconstructed with a blend of adaptive statistical iterative reconstruction (ASIR) and filtered back-projection (FBP) with images generated using conventional FBP.

Methods: Patients with chest CT re-examinations were alternately assigned to two scanners with different reconstruction techniques. The study groups included noise index (NI) 11 with 30% ASIR (A30), NI 13 with 40% ASIR (A40), NI 15 with 50% ASIR (A50) and NI 17 with 60% ASIR (A60), sequentially changed every 2 months. The control images were obtained using FBP and NI 11. All acquisitions were performed with automatic dose modulation. Paired t-test and non-parameter test were applied to compare the difference.

Results: The radiation doses were significantly lower in the examinations that used ASIR (p < 0.001). The mean dose reduction rate was 27.7%, 45.2%, 57.1% and 71.8% for Groups A30, A40, A50 and A60, respectively. The image quality of Groups A30-A50 was not inferior to that of the control examinations. The image noise of Group A60 was greater and subjective image quality was inferior to that of the control.

Conclusions: ASIR enabled the use of a higher NI with automatic dose modulation. With 50% ASIR and a NI of 15, the effective radiation dose was reduced by 57%, without compromising image quality.

语种英语
所属项目编号2011CB707705 ; 30970825
资助者National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
WOS记录号WOS:000309669800015
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/51671
Collection北京大学临床肿瘤学院
作者单位Peking Univ, Sch Oncol, Beijing Canc Hosp & Inst,Dept Radiol, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100142, Peoples R China
Recommended Citation
GB/T 7714
Qi, L-P,Li, Y.,Tang, L.,et al. Evaluation of dose reduction and image quality in chest CT using adaptive statistical iterative reconstruction with the same group of patients[J]. BRITISH JOURNAL OF RADIOLOGY,2012,85(1018):E906-E911.
APA Qi, L-P.,Li, Y..,Tang, L..,Li, Y-L.,Li, X-T.,...&Zhang, X-P.(2012).Evaluation of dose reduction and image quality in chest CT using adaptive statistical iterative reconstruction with the same group of patients.BRITISH JOURNAL OF RADIOLOGY,85(1018),E906-E911.
MLA Qi, L-P,et al."Evaluation of dose reduction and image quality in chest CT using adaptive statistical iterative reconstruction with the same group of patients".BRITISH JOURNAL OF RADIOLOGY 85.1018(2012):E906-E911.
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