title: Radiation exposure in multidetector CT: dose comparison between late 1990s and early 2010s in Korea.
abstract: The effective dose under ordinary clinical computed tomography (CT) protocols using three kinds of 64-channel and a 40-channel CT ranged from 0.6 to 15.5 mSv in early 2010s. And the organ dose ranged from 1.6 to 130.4 mGy: orbital and brain doses for brain stroke CT were the highest. For the comparison of the effective dose between late 1990s and early 2010s, multidetector CT (MDCT) for high-resolution lung CT was 2.4 times higher than that of single-detector CT (SDCT) and the ratio was the highest. However, the effective dose at MDCT was 20 % lower than that of SDCT in chest CT due to applying dose-saving techniques. In organ dose comparisons, high-resolution lung CT at MDCT was 3.5-4.5 times higher than that of SDCT, and showed 1.1-1.5 times higher than that of SDCT in the head and chest CT. For the abdomen CT, the primary organ dose at MDCT was ∼30 % lower than that of SDCT.
authors.affiliation: Department of Radiologic Science, Eulji University, Kyungki, Korea.
authors.forename: Moon Chan
authors.initials: MC
authors.lastname: Kim
authors.forename: Dong Kyoon
authors.initials: DK
authors.lastname: Han
authors.forename: Yon Min
authors.initials: YM
authors.lastname: Kim
authors.forename: Cheong Hwan
authors.initials: CH
authors.lastname: Lim
authors.forename: Kyoo Jin
authors.initials: KJ
authors.lastname: Yeon
authors.forename: Joon
authors.initials: J
authors.lastname: Yoon
mesh_terms: D000792:Angiography / Q000379:methods; D001921:Brain / Q000000981:diagnostic imaging; D004867:Equipment Design; D004869:Equipment Safety; D006257:Head / Q000000981:diagnostic imaging; D006801:Humans; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods; D011860:Radiography, Abdominal / Q000379:methods; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results; D056910:Republic of Korea; D013997:Time Factors; D014057:Tomography, X-Ray Computed / Q000379:methods*