Diffusion-weighted MRI and MR- volumetry - in the evaluation of tumor response after preoperative chemoradiotherapy in patients with locally advanced rectal cancer

The increase in the mean tumor ADC and percentage tumor volume regression in patients with rectal cancer treated with preoperative CRT was correlated with good response. DW MR imaging is a promising non-invasive technique that can help predict and monitor early therapeutic response in patients with rectal cancer who undergo CRT.