Authors: Sohi Bae MyungJoon Kim ChoonSik Yoon Dong Wook Kim Jung Hwa Hong MiJung Lee
Publish Date: 2014/07/08
Volume: 44, Issue: 12, Pages: 1541-1547
Abstract
We retrospectively reviewed the abdominal CT examinations of 41 children 24 boys and 17 girls mean age 10 years with a lowdose radiation protocol and reconstructed with ASIR the ASIR group We also reviewed routinedose abdominal CT examinations of 41 age and sexmatched controls reconstructed with filteredback projection control group Image quality was assessed objectively as noise measured in the liver spleen and aorta as well as subjectively by three pediatric radiologists for diagnostic acceptability using a fourpoint scale Radiation dose and objective image qualities of each group were compared with the paired ttest Diagnostic accuracy was evaluated by reviewing followup imaging studies and medical records in 2012 and 2013There was 463 dose reduction of sizespecific dose estimates in ASIR group from 134 to 72 mGy compared with the control group Objective noise was higher in the liver spleen and aorta of the ASIR group P 0001 However the subjective image quality was average or superior in 84100 of studies Only one image was subjectively rated as unacceptable by one reviewer There was only one case with interpretational error in the control group and none in the ASIR group
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