TY - JOUR
T1 - Software development for estimating the conversion factor (K-factor) at suitable scan areas, relating the dose length product to the effective dose
AU - Kobayashi, Masanao
AU - Asada, Yasuki
AU - Matsubara, Kosuke
AU - Suzuki, Syouichi
AU - Koshida, Kichiro
AU - matsunaga, Yuta
AU - Kawaguchi, Ai
AU - Haba, Tomonobu
AU - Toyama, Hiroshi
AU - Kato, Ryouichi
N1 - Funding Information:
This work was supported by Japan Society for the Promotion of Science KAKENHI Grant number 16K21455.
Publisher Copyright:
© The Author 2016.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - We developed a k-factor-creator software (kFC) that provides the k-factor for CT examination in an arbitrary scan area. It provides the k-factor from the effective dose and dose-length product by Imaging Performance Assessment of CT scanners and CT-EXPO. To assess the reliability, we compared the kFC-evaluated k-factors with those of the International Commission on Radiological Protection (ICRP) publication 102. To confirm the utility, the effective dose determined by coronary computed tomographic angiography (CCTA) was evaluated by a phantom study and k-factor studies. In the CCTA, the effective doses were 5.28 mSv in the phantom study, 2.57 mSv (51%) in the k-factor of ICRP, and 5.26 mSv (1%) in the k-factor of the kFC. Effective doses can be determined from the kFC-evaluated k-factors in suitable scan areas. Therefore, we speculate that the flexible k-factor is useful in clinical practice, because CT examinations are performed in various scan regions.
AB - We developed a k-factor-creator software (kFC) that provides the k-factor for CT examination in an arbitrary scan area. It provides the k-factor from the effective dose and dose-length product by Imaging Performance Assessment of CT scanners and CT-EXPO. To assess the reliability, we compared the kFC-evaluated k-factors with those of the International Commission on Radiological Protection (ICRP) publication 102. To confirm the utility, the effective dose determined by coronary computed tomographic angiography (CCTA) was evaluated by a phantom study and k-factor studies. In the CCTA, the effective doses were 5.28 mSv in the phantom study, 2.57 mSv (51%) in the k-factor of ICRP, and 5.26 mSv (1%) in the k-factor of the kFC. Effective doses can be determined from the kFC-evaluated k-factors in suitable scan areas. Therefore, we speculate that the flexible k-factor is useful in clinical practice, because CT examinations are performed in various scan regions.
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U2 - 10.1093/rpd/ncw256
DO - 10.1093/rpd/ncw256
M3 - Article
C2 - 27613747
AN - SCOPUS:85046490041
VL - 174
SP - 565
EP - 574
JO - Radiation Protection Dosimetry
JF - Radiation Protection Dosimetry
SN - 0144-8420
IS - 4
ER -