Fig. 21
From: Post-treatment MRI aspects of photodynamic therapy for prostate cancer
Levator ani muscle. Right photodynamic therapy in a 65-year-old patient for Gleason 6 adenocarcinoma (two positive biopsies in right prostate). Day-7 post-treatment axial (a) and coronal (b) T2-weighted MR images visualise a heterogeneous high signal of the right puborectalis muscle (arrowheads); axial and sagittal T1 FS contrast-enhanced images (c, d) show a low-signal well-defined area surrounded by a hyperintense enhanced border after gadolinium injection (arrows) corresponding to extraprostatic necrosis affecting the right levator ani muscle