Metabolic Volumetric Parameters in ¹¹C-Choline PET/MR Are Superior PET Imaging Biomarkers for Primary High-Risk Prostate Cancer

Figure 3

A DCE image and its derived parameter maps at the prostate region of a 76-year-old man who underwent simultaneous ¹¹C-choline PET/MRI and had a prostate-specific antigen level of 76.6 ng/ml. A region of interest (ROI) was drawn in the cancer localized at the right lobe of the prostate gland (arrows) to obtain ROI histograms on DCE parameter maps. The Ktrans_max, Ktrans_kur, Kep_max, Kep_kur, iAUC_max, and iAUC_kur values for prostate cancers in this patient were 3993.0/min, 3.34, 4000.0/min, 4.46, 1716.0, and 1.66, respectively. (a) DCE. (b) Ktrans. (c) Kep histogram. (d) Kep. (e) iAUC. (f) iAUC histogram.

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