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 |
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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 |
All Science Journal Classification (ASJC) codes
- Radiation
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Public Health, Environmental and Occupational Health