Susceptibility-induced image distortion at 3.0T. Shown are three consecutive axial slices. The air in the rectum or within the balloon of the endorectal coil causes local magnetic field inhomogeneity and susceptibility-related artifacts. Images were obtained with the following imaging parameters: b-value = 1000 s/mm2, TR/TE = 3500/76.8 ms, 2 NEX, matrix 128×128, FOV 160×160 mm2, resolution 1.25×1.25×3 mm3.