Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Reduction of Radiation Risk to Cardiologists and Patients During Coronary Angiography: Effect of Exposure Angulation and Composite Shields Publisher



Malekzadeh R1 ; Tarighatnia A2, 3 ; Mehnati P1 ; Nader ND4
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Medical Physics, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
  2. 2. Department of Medical Physics, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
  3. 3. Research Center for Molecular and Cellular Imaging, Advanced Medical Technologies and Equipment Institute, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Anesthesiology, University at Buffalo, Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, United States

Source: Frontiers in Biomedical Technologies Published:2024


Abstract

Purpose: This study aimed to design an improved form of a composite shield with different materials and shapes and simultaneously reduce the radiation dose to both the patient and operator. Materials and Methods: A female phantom study was performed with and without bismuth belt-shaped composite shields on the breast region at different beam projections used in coronary angiography. Dose measurements were conducted using GR-200 thermo-luminescence dosimeters, dose area product (DAP), and air kerma (AK) over regular and large breast locations, with and without using bismuth shields. An electronic personal dosimeter was used for operator dose assessment. Patients received doses between 2.27 mSv and 3.38 mSv, depending on the size and strength of beam projections. Results: The use of the developed shields caused a dose reduction of 18%–25% of sensitive breast tissue due to breast size and shield type. During coronary angiography, the mean values of DAP and AK were 2.02 (1.24-2.80) mGy.m2 and 314.1 (202.8-500) mGy, respectively. The highest recorded dose was at the LAO/CRA and LAO/CAU beam projections for both the patient and operator. After applying a belt shield, the operator's radiation dose was decreased by approximately 32%. We found a statistically significant correlation between the radiation dose received by the operator and the patient's breast radiation exposure dose (p<0.001, r2=0.93). Conclusion: The designed belt shield can be a potentially promising protective device for decreasing the radiation risk to the patient's breast and the operator during coronary angiography. However, further studies will be considered before the application of this shield in standard clinical practice. © 2024 Tehran University of Medical Sciences.
Related Docs
1. Advances in Radiation Protection in Oral and Dental Radiology: Pragmatic Approaches and Recent Innovations, Frontiers in Biomedical Technologies (2025)
2. Radiation Exposure Aspects During Trans-Radial Angiography and Angioplasty, Frontiers in Biomedical Technologies (2023)
3. Tips and Tricks in Molecular Imaging: A Practical Approach, Frontiers in Biomedical Technologies (2021)
4. Engineering and Quantification of Bismuth Nanoparticles As Targeted Contrast Agent for Computed Tomography Imaging in Cellular and Animal Models, Journal of Drug Delivery Science and Technology (2021)
5. Trade-Off Between Breast Mean Glandular Dose and Image Quality in Digital and Conventional Mammogram Systems: A Multicenter Study, Radioprotection (2021)
Experts (# of related papers)
Hossein Ghadiri Harvani (2)