Spectral Presaturation Inversion Recovery MR Imaging Sequence after Gadolinium Injection to Differentiate Fibrotic Scar Tissue and Neoplastic Strands in the Mesorectal Fat in Patients Undergoing Restaging of Rectal Carcinoma after Neoadjuvant Chemo- and R

Reticular-shaped enhancing strands on SPIR MR imaging after gadolinium injection are associated with tumor infiltration of the mesorectal fat.