Fig. 3
From: Post-treatment MRI aspects of photodynamic therapy for prostate cancer
Oedema and necrosis. Left lobe photodynamic therapy in a 65-year-old patient with a PSA level of 6.2 ng/ml and two positive biopsies in the left lobe—Gleason 6 (3 + 3) adenocarcinoma. a Pre-treatment axial T2-weighted image shows diffuse bilateral hyposignal of the peripheral prostate without focal nodularity. b Day-7 post-treatment axial T2-weighted image shows a heterogeneous signal of the treated lobe extending to the peripheral and transitional zone (arrowhead). Note that the signal of the right lobe peripheral zone is unchanged compared with the pre-treatment image