Fig. 2
Images above show Grade 1 AC and unaffected rectal wall in a 62-year-old man. Axial T2-weighted MR image shows the AC along the left wall of the rectum (a). ADC map shows low-signal-intensity tumor (ADC = 1.09 ± 0.24 × 10− 3 mm2/s, b). MK map shows high-signal-intensity tumor (MK = 1.00 ± 0.19, c). MD map shows low-signal-intensity tumor (MD = 1.26 ± 0.24 × 10− 3 mm2/s, d). Axial T2-weighted MR image shows the unaffected rectal wall (e). ADC map shows high-signal-intensity rectal wall (ADC = 1.69 ± 0.10 × 18− 3 mm2/s, f). MK map shows low-signal-intensity rectal wall (MK = 0.57 ± 0.10, g). MD map shows high-signal-intensity rectal wall (MD = 2.04 ± 0.21 × 10− 3 mm2/s, h)