PMC5705796_01
(A) Axial PET, (B) axial CT, and (C) axial fused PET/CT images through the level of the ischiorectal fossae demonstrate intense radiotracer uptake fusing to subtle thickening adjacent to or within the right obturator internus musculature (red arrowheads). In retrospect, a corresponding abnormality can be seen on MRI including increased T2 signal, minimal restricted diffusion, and early contrast enhancement (red arrowheads on (D) axial fat-saturation T2-weighted image, (E) axial apparent diffusion coefficient image, and (F) axial dynamic contrast-enhanced T1 image). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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PMC5705796_02
Axial (left), sagittal (middle), and coronal (right) views of CT-based radiation plan for delivery of SABR to 3625 cGy in 5 fractions prescribed to the 71.5% isodose line. Radiolucent prostate brachytherapy seeds and penile prosthesis reservoir are visible on the sagittal view.
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He received 36.25 Gy in 5 fractions prescribed to the 71.5% isodose line (Fig. 2).