What’s the difference between a biparametric MRI and a multiparametric MRI?

Multiparametric MRI (mpMRI) is a comprehensive MRI scan of the prostate gland and pelvis which is commonly used to investigate men with a raised PSA. It involves an injection of contrast (see below) and typically takes around an hour to perform.Biparametric MRI (bpMRI) is a shorter MRI scan which recent research suggests can be used to detect prostate cancers in men with normal PSA. It does not require contrast injection and typically takes around 30 minutes to perform.