No. MRI has excellent specificity (>95%) for seminal vesicle invasion, but much less impressive sensitivity (<60%). See de Rooij et al. European Urology 2016 (PMID: 26215604) for a meta-analysis and a nice study by Soylu et al. Radiology 2013 (PMID: 23440325 PMCID: PMC6940014). So, MRI can be ...