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Dosimetric plans of a patient treated with rectal distension-mediated 5 × 9 Gy extreme hypofractionated SABR. Fused CT-MR image sets show dose-sculpted distributions along the urethra, rectal wall, urogenital diaphragm, and neurovascular bundles. Color-wash dose distributions are shown on the axial (A), sagittal (B), and coronal (C) planes. An intraurethral Foley catheter loaded with 3 beacon transponders is visible on the longitudinal plane.
