摘要
To the Editor： Magnetic resonance （MR） imaging plays an important role in rectal cancer （RC） treatment decision-making. There is controversy about whether it is necessary to use rectal contrast materials during MR imaging for RC. Feces and gas in the rectum may affect the display of lesions and induce artifacts, especially on diffusion-weighted image （DWI）.
To the Editor： Magnetic resonance （MR） imaging plays an important role in rectal cancer （RC） treatment decision-making. There is controversy about whether it is necessary to use rectal contrast materials during MR imaging for RC. Feces and gas in the rectum may affect the display of lesions and induce artifacts, especially on diffusion-weighted image （DWI）.
