Abdullah Alshreef is currently a Medical Physics Resident at Loma Linda University School of Medicine. He obtained his Medical Physics PhD from the University of Minnesota in 2024. Abdullah’s research is focused on brachytherapy techniques, especially those related to low-energy dosimetry of Cs-131. In his research, he uses Monte Carlo (MC) GAMOS (GEANT4) to simulate dose in water and in different materials to accurately determine dose deposited. As current treatment planning systems (TPS) used clinically do not account for anatomical heterogeneities, Abdullah uses MC GAMOS to simulate the dose using CT DICOM images and to compare simulated doses with doses calculated by the TPS. Abdullah also researches methods to optimize MRI pulse sequence to improve visualization of seeds, edema, and brain parenchymal in a single MRI scan.
Abdullah is a member of the American Association of Physicists in Medicine.
Education
- MSc in Biomedical Imaging from the University of Kent in the United Kingdom, 2010
- PgDip in Medical Physics from the University of Aberdeen in the United Kingdom, 2009
- BSc in Biomedical Engineering from King Abdulaziz University (KAU), Jeddah, Saudi Arabia, 2006
Recent Publications
Presentations in Conferences
Validation of GAMOS Monte Carlo Simulation for 131Cs Brachytherapy Source in Water and Dosimetric Characterization of Solid Water, Bone and Brain Tissues, NCC-AAPM Spring Meeting, April 2023
A Detailed Calibration Method for EBT3 GafChromicTM Film Directly Using Low Energy Brachytherapy Sources, NCC-AAPM Autumn Meeting, November 2022
End-to-End Test for GammaTile Permanent Brain Implants, NCC-AAPM Spring Meeting, April 2022
Abstracts in Conferences
Alshreef, A.A., Sterling, D., Alaei, P., Rogers, B.J., Robert Drehmel, S., Reynolds, M., Dusenbery, K.E., Sloan, L., Chen, C., Ferreira, C. Custom-Made Lead Shield for Select Permanent Implanted Cs-131 Brain Tumor Patients.
Alshreef, A.A., Assalmi, M., Rogers, B.J., Oare, C., Ferreira, C. Gamos Monte Carlo Simulation to Calculate the Dose in Heterogeneities for Gammatile Implanted Brachytherapy.
Alshreef, A., Rogers, B., Oare, C., Ferreira, C. Validation of GAMOS Monte Carlo Simulation for Cs-131 Brachytherapy in Water. AAPM Annual Meeting, July 2023.
Alshreef, A., Sterling, D., Alaei, P., Rogers, B., Drehmel, S., Reynolds, M., Dusenbery, K., Chen, C., Ferreira, C. Radiation Safety for Patients, Families, and Caregivers of GammaTile Permanent Implant Brachytherapy. AAPM Annual Meeting, July 2023.
Alshreef, A., Assalmi, M., Rogers, B., Oare, C., Ferreira, C. GAMOS Monte Carlo Simulation to Calculate the Dose in Heterogeneties for GammaTile Implanted Brachytherapy. AAPM Annual Meeting, July 2023.
Aldosary, G., Alshreef, A., Saleh, H., Wadi-Ramahi, S., Khatib, A., Omari, E. Toward the Establishment of an Arab Medical Physicist Organization: Experiences in launching an Education Seminar for Promoting Global Health Equity. AAPM Annual Meeting, July 2023.
Assalmi, M., Alshreef, A., El Yamani, D., Ade, N. Assessment of Neutron Contamination-Induced Dose Deposited by a Medical Linear Accelerator Operated at 18 MV Photon Beam. AAPM Annual Meeting, July 2023.
Alshreef, A., Sterling, D., Alaei, P., Ferreira, C. Radiation Safety Aspects for GammaTile Implant Brachytherapy. AAPM Annual Meeting, July 2022. doi: 10.1002/mp.14316
Oare, C., Alshreef, A., Ferreira, C. Novel Film Calibration Method Directly Using Low Energy Brachytherapy Sources with a Custom Phantom. AAPM Annual Meeting, July 2022. doi: 10.1002/mp.15769
Alshreef, A., Sterling, D., Alaei, P., Ferreira, C. Radiation Safety Aspects for GammaTile Implant Brachytherapy. AAPM Annual Meeting, July 2020. doi: 10.1002/mp.14316
