Document Detail


Feasibility of low-radiation-dose CT for abdominal examinations with hybrid iterative reconstruction algorithm: low-contrast phantom study.
MedLine Citation:
PMID:  23299614     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Our purpose in this study was to evaluate the image quality of low-radiation-dose CT using hybrid iterative reconstruction (HIR), and to compare the results with those of filtered back projection (FBP) at routine doses. We measured the mean values and standard deviation of the CT numbers within and outside a 15-mm low-contrast object cylinder at 1.0 % contrast level. The noise reduction levels of the HIR were 1 (weak) to 7 (strong). Visual inspection of the low-contrast detectability was done by six radiologic technologists. The low-contrast detectability of the cylinder at the 1.0 % contrast level with HIR at all mAs levels was equal to that obtained with FBP, and thus the use of HIR did not result in any improvement of low-contrast detectability.
Authors:
Masatoshi Kondo; Masamitsu Hatakenaka; Ko Higuchi; Taisuke Fujioka; Takashi Shirasaka; Yasuhiko Nakamura; Katsumasa Nakamura; Takashi Yoshiura; Hiroshi Honda
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-9
Journal Detail:
Title:  Radiological physics and technology     Volume:  -     ISSN:  1865-0341     ISO Abbreviation:  Radiol Phys Technol     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101467995     Medline TA:  Radiol Phys Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Medical Technology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka, 812-8582, Japan, m-kondo@med.kyushu-u.ac.jp.
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