How can you find what is going on
inside a person’s body—without opening the patient up Regular X-rays can show a
lot. CAT scans can show even more. They can give a three- dimensional view of
body organs. What is a CAT scan CAT stands for Computerized Axial Tomography. It is a special X-ray machine that obtains a 360-degree picture of a small area of a patient’s body. Doctors use X-rays to study and diagnose diseases and injuries within the body. X-rays can locate foreign objects inside the body or take pictures of some internal organs—if special substances such as dyes of special liquids are added to the organs to be X-rayed. A CAT scanner, however, uses a beam of X-rays to give a cross-sectional view of a specific part of the body. A free beam of X-rays is scanned across the body and rotated around the patient from many different an A. (A) CAT scanners can take photos of either the whole body or one part of it B. (B) CAT scanners do not need the injection of dyes C. (C) CAT scanners are more expensive than regular X-ray procedures D. (D) The patient can be safely exposed to a slight amount of radiation 更多"How can you find what is going on "的相关试题: [单项选择]
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