To avoid overtreatment and repeated use of invasive biopsies, there is a need for improved diagnostic tools for prostate cancer risk stratification. Simultaneous Positron Emission Tomography / Magnetic Resonance Imaging (PET/MRI) systems are promising, however, fundamental differences in PET and MR imaging methodology currently limit full integration and thus the true potential of simultaneous PET/MR: While PET is a rather straightforward, single 3D scan, the MRI exam is complex and current clinical practice consists of several 2D sequences with different image contrast weightings and spatial coverage, performed in a serial fashion. Here, we propose a single, 3D, quantitative T2-MRI sequence that parallels the continuous scan workflow of PET data acquisition.
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