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Barium enema钡剂灌肠

A barium enema is a procedure (done through a special x-ray) for examining the large bowel (colon and rectum). 1钡剂灌肠是一个程序（通过一个特殊的X射线）为研究大肠癌（结肠和直肠） 。

Normal x-rays provide limited information about the bowel, so a substance called barium sulphate is put into the bowel to produce a better picture.正常的X射线提供的信息有限，有关肠易激，使一种物质所谓硫酸钡是投入肠易激产生更好的图片。 Barium sulphate is a fine, heavy, white, odourless powder that can be formed into a suspension in the form of a watery paste.硫酸钡是一个很好的，沉重的，白色，无臭粉末，可以形成一个暂停，在形式的水贴。 It is insoluble and non-poisonous.这是不溶性和非有毒。 It coats the inside of the bowel and makes it easier to see on the x-rays.它的大衣，内肠，使之更容易地看到，对X射线。

If examination of the large intestine (bowel) is necessary the barium sulphate is put directly into the rectum by way of the back- passage (anus).如果考试的大小肠（肠）是必要的硫酸钡，提出了直接排入直肠的方式，后面的通道（肛门） 。 This is called a barium enema.这就是所谓的一钡剂灌肠。 If however the stomach or small intestine is to be investigated the barium sulphate can taken by mouth in a procedure called a barium meal.然而，如果胃或小肠是要调查，硫酸钡，可以采取口在一个程序，所谓的上消化道钡餐。