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Exploring the correlation between effective dose and BMI-based size-specific dose estimate in CT angiography.
Hariwan A Mohammed1, Dindar S Bari2, Haval Y Yacoob Aldosky3
1College of Medicine, University of Duhok, Kurdistan Region, Iraq.
Size-Specific Dose Estimate (SSDE) using body mass index (BMI) strongly correlates with Effective Dose (ED) in coronary CT angiography (CCTA). This patient-specific metric aids in optimizing radiation protection during CCTA procedures.
Area of Science:
- Medical Imaging
- Radiology
- Radiation Dosimetry
Background:
- Computed tomography angiography (CTA) is crucial for diagnosis but raises radiation exposure concerns.
- Accurate estimation of radiation dose is essential for patient safety.
Purpose of the Study:
- To investigate the correlation between Effective Dose (ED) and Size-Specific Dose Estimate (SSDE) using body mass index (BMI) in CTA.
- To evaluate the utility of SSDE-BMI as a patient-specific dosimetry parameter.
Main Methods:
- Retrospective analysis of 422 adult patients undergoing Coronary CT Angiography (CCTA).
- Calculated two ED values (ED103, EDDLP) and two SSDEBMI values from CTDIvol and patient BMI.
Main Results:
- A strong positive correlation was found between ED103 and SSDEBMI, outperforming EDDLP and SSDEBMI correlations.
- Significant correlation observed across diverse BMIs and genders, particularly in Obese Class II females.
Conclusions:
- SSDEBMI is a reliable, patient-specific metric for radiation protection in CCTA.
- Findings support SSDEBMI for personalized radiation risk assessment and protocol optimization.
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