Guidelines on prostate MRI recommend a full multiparametric MRI (mpMRI) examination that includes several anatomical and functional acquisitions as well as intravenous contrast media. This is time-consuming (approximately 30-40 minutes) and expensive. Over time it has become evident that contrast-enhanced imaging and multiple imaging planes often do little to improve the overall clinical picture, especially in the detection and localization of significant prostate cancer. In contrast, a rapid and simple biparametric MRI (bpMRI) examination that uses fewer scan sequences and no intravenous contrast media can decrease the imaging time (approximately 10-15 minutes) and cost, while retaining sufficient diagnostic accuracy to detect or rule out significant prostate cancer.
The bpMRI protocol consists of axial T2-weighted and axial diffusion-weighted images (recommended bvalues: 0-100, 400-500, 800-1000 & 1500-2000 sec/mm2) with corresponding apparent diffusion coefficient (ADC) map (see the ADC map on our Facebook page). These 2 acquisitions are the most dominant sequences for prostate cancer lesion detection.