The purpose of this study was to evaluate the association of the T1 relaxation time and FSF of the pancreatic parenchyma measured by MRI with HbA1c value. The T1 relaxation time on the T1 map images with fat suppression and FSF on fat fraction images of the pancreatic parenchyma were measured. We assessed the correlation between the MRI measurements and HbA1c values. The FSF (%) of the pancreatic parenchyma was significantly correlated with HbA1c values while the T1 relaxation times were not. The FSF (%) of the pancreas may be a potential imaging biomarker for impaired glucose tolerance.