George Ibrahim

Project - The Utility of Photon-counting Localizer Radiograph as a tool in Bone Densitometry.

• Built a segmentation-based algorithm to determine areal bone mineral density using physical experimental data from photon-counting localizer radiographs.
• Validated results against standard Dual Energy X-ray Absorptiometry (DEXA).
• Conducted virtual imaging trials using XCAT phantoms simulated through DukeSim to determine optimal imaging parameters for bone densitometry.

• Regularly perform patient Intensity Modulated Radiation Therapy and Monthly Quality Assurance in four Linacs, including Varian, Tomotherapy, and ViewRay Inc.
• In charge of handling all patient treatment and DICOM records, including exporting records to other medical facilities and importing received records to our Primary Imaging Software.
• Successfully contributed to patient treatment planning dosimetry roles in the form of MR and CT fusions and applying contours in Prostate, HDR Pelvis, Lung, and Head and Neck scans.
• Developed and implemented new workflows in the clinic's primary Imaging Software, MIM.
• Contributed to brachytherapy procedures, including the building and maintenance of radioactive eye plaques.
• Ensured complete radiation safety in eye plaque insertion/removal surgical procedures.
• Effectively analyzed large amounts of clinical data related to multiple research projects

• Assisted with advancements in an all-optical machine learning framework.
• Set up, calibrated, and ran a wide range of laboratory equipment, including lasers, cameras, and optical cage systems.
• Successfully completed various computational tasks associated with machine learning experiments.
• Developed communication skills by collaborating with team members to meet daily demands and handle difficulties in our projects.

• Observed and contributed in patient immobilization and CT sim procedure.
• Performed monthly QA following TG-51 guidelines under the supervision of a senior faculty member/medical physicist.
• Performed patient-specific QA and Delivery under the supervision of a senior faculty member/medical physicist.
• Performed in-vivo dosimetry and measurements using OSLDs under the supervision of a senior faculty member/medical physicist.
• Created treatment plans for SBRT, SRS, total body, and total skin irradiation.
• Participated in Brachytherapy after-loader QA under the supervision of a Brachytherapy specialist medical physicist.
• Performed a cylinder and tandem and ovoid-based HDR brachytherapy treatment planning.
• Shadowed HDR daily and weekly QA

External Beam Radiotherapy Planning.

• Successfully created a Prostate IMRT plan from scratch.
• Successfully created a Prostate VMAT plan.

Advanced Photon Beam Radiation Therapy.

• Built an image registration algorithm, including CT-CBCT and CT-MR image registration in MATLAB
• Developed a Pencil Beam convolution superposition dose calculation algorithm in MATLAB.