Patients drink what is known as a contrast solution so doctors can view the patients digestive tract. The contrast solution shows abnormalities within a CT scan or MRI that can not normally be seen without contrast.
Patients drink Barium Sulfate, so that doctors can view the patient's digestive tract. Also can have a Barium enema instead of drinking.
I presume you mean for an x-ray to see your digestive tract. Barium can be either taken through the mouth or as an enema.
Barium
BaSO4 or Barium Sulfate is taken by the patients so that doctors can view the digestive tract. BaSO4 is very dense and hence will appear as a shadow in the X-ray.
Barium and Sulfur (probably)
Barium and Gastrograffin
so they know if the patients digestive system is working properly
Doctors will ask their patients about their general health and if the patients have any abdominal pains . To investigate further, doctors may look with a camera through the colon of the patients.
the answer is unknown
An endoscopy can allow a doctor to see your upper digestive tract. If you drink a barium solution, your digestive system will be visible through an X-ray-like procedure.
patients
the people that doctors treat are called "Patients".
Doctors are very bad patients for many reasons. Doctors are used to doing the tests and solving the problems not sitting back just to listen.
so they can see their patients.
to care for there patients
at the hospital
Doctors have to be calm because if they are not, the patients will think that their case is serious. The patients can pass out if the doctor helping them stresses.
Madical doctors are normal doctors they give madicines and injections