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A comparison study of radiation effective dose in ECG-Gated Coronary CT Angiography and calcium scoring examinations performed with a dual-source CT scanner

Sabarudin A 1 , Siong TW 1 , Chin AW 2 , Hoong NK 3 , Karim MKA 4

Affiliations 

  • 1 Diagnostic Imaging & Radiotherapy Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
  • 2 Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81300, Johor Bharu, Johor, Malaysia
  • 3 Department of Biomedical Imaging, Universiti of Malaya Medical Centre, 50603, Kuala Lumpur, Malaysia
  • 4 Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. [email protected]
Sci Rep, 2019 03 13;9(1):4374.
PMID: 30867480 DOI: 10.1038/s41598-019-40758-5

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-1cm-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 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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