Endoscopy of rectum

• 直肠内镜检查

Endoscopy of rectum的用法和样例：

例句

1. It does require the same prep as colonoscopy, with a tube inserted into the rectum to inflate the colon with gas to create clearer images.
   但是也需要和结肠镜检查一样准备，还需要插一根管子到直肠内，把结肠鼓起来，才能产生清晰影像。