One of the major differences between a standard X-ray and a CAT-scan is
A) a CAT-scan does not subject the patient to X-rays.
B) photons are emitted during a CAT scan, but not during an X-ray.
C) only a CAT-scan can produce a three-dimensional image of the interior of the body.
D) only an X-ray can produce sharp images of organs with densities.
E) only a CAT-scan uses gamma rays.

Question

Quizplus · Accepted Answer

A standard X-ray produces a two-dimensional image, while a CAT-scan can produce a three-dimensional image, which is a major difference between the two imaging techniques. Option A is incorrect because a CAT-scan uses X-rays, just like a standard X-ray. Option B and E are incorrect because X-rays and gamma rays are both types of photons. Option D is incorrect because a CAT-scan can also produce sharp images of dense organs, such as the liver or brain.

One of the Major Differences Between a Standard X-Ray and a CAT-Scan