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Updated National Diagnostic Reference Levels and Achievable Doses for CT Protocols: A National Survey of Korean Hospitals

Authors :
Sora Nam
Hyemin Park
Soonmu Kwon
Pyong-kon Cho
Yongsu Yoon
Sang-wook Yoon
Jungsu Kim
Source :
Tomography, Vol 8, Iss 5, Pp 2450-2459 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Background: In 2021, the Korean government proposed a new CT diagnostic reference level. This study performed a nationwide survey and developed new DRLs and AD for 13 common CT examinations. We compared other countries’ DRLs for CT examinations. Methods: This study investigated the CTDIvol and DLP of the 12 types of CT protocols for adults and brain CT protocol for pediatrics. A total of 7829 CT examinations were performed using 225 scanners. We defined the DRLs values in the distribution of radiation exposure levels to determine the nationwide patient dose and distribution status of the dose. Results: This study showed that the new Korean national CT DRLs are slightly higher or similar to those of previous surveys and are similar or lower than those of other countries. In some protocols, although the DLP value increased, the CTDIvol decreased; therefore, it can be concluded that the patient’s dose in CT examinations was well managed. Conclusions: The new CT DRLs were slightly higher than or similar to that of the previous survey and were evaluated to be similar or lower than CT DRLs of other countries. These DRLs will be used for radiation optimization and effective dose calculation for an individual.

Details

Language :
English
ISSN :
2379139X and 23791381
Volume :
8
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Tomography
Publication Type :
Academic Journal
Accession number :
edsdoj.4d780ff768b246fab84d3cf0ecaca4a7
Document Type :
article
Full Text :
https://doi.org/10.3390/tomography8050203