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Proposing Multiregional Diagnostic Reference Levels for Common CT Angiography Examinations in Saudi Arabia
Ali Alhailiy1, Essam Alkhybari1, Mohammed Alshuhri1
1Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia.
Diagnostics (Basel, Switzerland)
|July 27, 2024
Summary
This study established preliminary diagnostic reference levels (DRLs) for computed tomographic angiography (CTA) in Saudi Arabia. These DRLs provide a baseline for optimizing radiation doses in these common imaging procedures.
Area of Science:
- Radiology
- Medical Physics
- Public Health
Background:
- Diagnostic reference levels (DRLs) are essential for radiation dose optimization in medical imaging.
- Computed tomographic angiography (CTA) is frequently performed, necessitating established DRLs for effective radiation management.
Purpose of the Study:
- To establish preliminary DRLs for cerebral, pulmonary, and lower-extremity CTA examinations in Saudi Arabia.
- To provide a benchmark for radiation dose assessment in CTA procedures within the region.
Main Methods:
- Data from 723 CTA examinations across six medical cities in Saudi Arabia were analyzed.
- DRLs were determined using CT dose index volume (CTDIvol) and dose length product (DLP) at the 75th, median, and 25th percentiles.
- Patient weight averaged 75 kg.
Main Results:
- Preliminary DRLs were established: 1221 mGy cm for cerebral CTA, 475 mGy cm for pulmonary CTA, and 1040 mGy cm for lower-extremity CTA.
- The determined DRLs were found to be comparable to those reported internationally.
Conclusions:
- This study presents the first preliminary DRLs for common CTA procedures in Saudi Arabia.
- Opportunities for further radiation dose reduction exist through the implementation of low kVp and advanced image reconstruction techniques.
- These findings will support future nationwide DRL surveys and the optimization of CTA protocols in Saudi Arabia.
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