In obesity, pancreas is affected by fatty infiltration and fibrosis. Bariatric surgery is one of the only therapies which demonstrably improves pancreas status in obesity. In the present work we investigated the mechanical properties at several frequencies, the PDFF and the T2* of pancreatic explants in an obese rat model of bariatric surgery. Bariatric surgery reversed the MRI parameters to values not significantly different than controls. MRI parameters closely matched the reference histology observations. MRE and multiparametric MRI may be used to monitor pancreatic status and treatment response in an obese rat model of bariatric surgery.