Sabarudin, Akmal and Tiong, Wei Siong and Ang, Wee Chin and Ng, Kwan Hoong and Karim, Muhammad Khalis Abdul (2019) A comparison study of radiation effective dose in ECG-Gated Coronary CT Angiography and calcium scoring examinations performed with a dual-source CT scanner. Scientific Reports, 9 (1). p. 4374. ISSN 2045-2322, DOI https://doi.org/10.1038/s41598-019-40758-5.
Full text not available from this repository.Abstract
In this report we have evaluated radiation effective dose received by patients during ECG-gated CCTA examinations based on gender, heart rate, tube voltage protocol and body mass index (BMI). A total of 1,824 patients were retrospectively recruited (1,139 men and 685 women) and they were divided into Group 1 (CCTA with calcium scoring), Group 2 (CCTA without calcium scoring) and Group 3 (only calcium scoring), where the association between gender, heart rate, tube voltage protocol and body mass index (BMI) were analysed. Examinations were performed using a retrospective ECG-gated CCTA protocol and the effective doses were calculated from the dose length product with a conversion coefficient of 0.026 mSv.mGy −1 cm −1 . No significant differences were observed in the mean effective dose between gender in all groups. The mean estimated dose was significantly higher when the heart rate was lower in Group 1 (p < 0.001) and Group 2 (p = 0.002). There were also significant differences between the mean effective dose in tube voltage protocol and BMI among the three groups. The mean effective dose was positively correlated with BMI (p < 0.001), but inversely related to the heart rate. This study supported the theory that a high heart rate, low tube voltage and low BMI could significantly reduce radiation dose exposure. © 2019, The Author(s).
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Coronary Angiography; Tomography; Coronary CTA |
| Subjects: | Q Science > QC Physics R Medicine |
| Divisions: | Faculty of Medicine |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 29 Jan 2020 01:35 |
| Last Modified: | 29 Jan 2020 01:35 |
| URI: | http://eprints.um.edu.my/id/eprint/23610 |
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