The development of a diagnostic reference level on patient dose for CT examination in Korea

Pyongkon Cho, Bokyung Seo, Taekyu Choi, Jang Seob Kim, You Hyun Kim, Jong Hak Choi, Yuw Han Oh, Ki Hyun Kim, Sunung Kim

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


The purpose of this research is to develop a diagnostic reference level for computed tomography (CT) suitable for Korean medical purposes. The direction of CT application and details on patient dose were investigated by survey, and the dose measurement is targeted in general hospitals registered with the Korean Hospital Association. The dose measurement was done with head and body phantom, and an accurate dosimeter was utilised in medical institutions that participated in the survey. The survey and dose measurements on the patient dose showed that the 75th percentiles in the distribution of weighted CT dose index (CTDIw) were 50.5 and 45.4 mGy for the head and 14.4 and 25.30 mGy for the body portions, respectively. Based on these research data, the target patient doses that are believed to be achievable for CT examination in Korean circumstances are about 48 ± 4 mGy in the head and 20 ± 8 mGy in the body.

Original languageEnglish
Pages (from-to)463-468
Number of pages6
JournalRadiation Protection Dosimetry
Issue number4
Publication statusPublished - 2008

Bibliographical note

Copyright 2008 Elsevier B.V., All rights reserved.

ASJC Scopus subject areas

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health


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