Physics note · Treatment Planning
Medical physics plan review — re-irradiation IMPT
Sep 18, 2026 · D. Okafor, PhD · 1 page
G2 › Raman, Priya › Treatment Planning › Physics › 2026-09-18 Physics note
In packet · tab 5
MEDICAL PHYSICS PLAN REVIEW — RE-IRRADIATION IMPT
Prescription: 60 Gy(RBE) in 30 fractions to CTV-recurrence (GTV + 5 mm, anatomically constrained).C-5
Robustness: 3 mm setup / 3.5% range uncertainty; all scenarios acceptable. Weekly verification CT planned.
Current-course OAR doses: spinal cord Dmax 8.9 Gy(RBE); brainstem Dmax 6.2 Gy(RBE).
Composite dose: prior plan DICOM requested from Gulf Coast Cancer Center on 09/15; composite (summed) dose not yet computedC-12.