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Relationship of body mass index and abdominal fat with radiation dose received during preoperative liver CT in potential living liver donors: a cross-sectional study

Authors
 Sunyoung Lee  ;  Kyoung Won Kim  ;  Heon-Ju Kwon  ;  Jeongjin Lee  ;  Kyoyeong Koo  ;  Gi-Won Song  ;  Sung-Gyu Lee 
Citation
 QUANTITATIVE IMAGING IN MEDICINE AND SURGERY, Vol.12(4) : 2206-2212, 2022-04 
Journal Title
QUANTITATIVE IMAGING IN MEDICINE AND SURGERY
ISSN
 2223-4292 
Issue Date
2022-04
Keywords
Computed tomography (CT) ; liver transplantation (LT) ; living donors ; radiation dose
Abstract
Background: Although contrast-enhanced computed tomography (CT) is currently the most widely-used imaging modality for the preoperative evaluation of potential living liver donors, radiation exposure remains a major concern. The present study aimed to determine the relationship of body mass index (BMI) and abdominal fat with the effective radiation dose received during liver CT scans as part of a pre-donation work-up in potential living donors.

Methods: This retrospective cross-sectional study included 695 potential living donors (mean age, 30.5±9.7 years; 445 men and 250 women) who had undergone preoperative liver CT scans between 2017 and 2018. The following measures were evaluated: BMI, abdominal fat as measured at the level of the third lumbar vertebra, and effective dose based on the dose length product (DLP). Correlations between the effective dose and other variables were evaluated using Pearson's correlation coefficient.

Results: The mean BMI, total fat area (TFA), and effective dose were 23.6±3.3 kg/m2, 218.7±110.0 cm2, and 9.4±3.3 mSv, respectively. The effective dose during liver CT scans had a strong positive correlation with both BMI (r=0.715; P<0.001) and TFA (r=0.792; P<0.001). As BMI and TFA increased, so did the effective dose.

Conclusions: Higher BMI and TFA significantly increased the radiation dose received during liver CT scans in potential living donors.
Files in This Item:
T202200883.pdf Download
DOI
10.21037/qims-21-977
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Lee, Sunyoung(이선영) ORCID logo https://orcid.org/0000-0002-6893-3136
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/188334
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