Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 565-574 |
| Number of pages | 10 |
| Journal | Radiation protection dosimetry |
| Volume | 174 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 01-05-2017 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Radiological and Ultrasound Technology
- Radiation
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health
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Software Development for Estimating the Conversion Factor (K-Factor) at Suitable Scan Areas, Relating the Dose Length Product to the Effective Dose. / Kobayashi, Masanao; Asada, Yasuki; Matsubara, Kosuke; Suzuki, Syouichi; Koshida, Kichiro; Matsunaga, Yuta; Kawaguchi, Ai; Haba, Tomonobu; Toyama, Hiroshi; Kato, Ryouichi.
In: Radiation protection dosimetry, Vol. 174, No. 4, 01.05.2017, p. 565-574.Research output: Contribution to journal › Article
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
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.
UR - http://www.scopus.com/inward/record.url?scp=85046490041&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85046490041&partnerID=8YFLogxK
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 -