Question

question 4 of 10
how does an image from a ct scan differ from a regular x - ray image?
a. an x - ray image requires a computer to create it, and a ct scandoes not
b. the ct scan makes a 2d image, and regular x - ray images are 3d.
c. the ct scan uses many x - ray images in thin slices to make a 3dimage.
d. the ct scan uses lower amounts of radiation.

Explanation:

A regular X - ray is a 2D image. A CT (Computed Tomography) scan takes multiple X - ray images (in thin slices) from different angles. Then, using computer processing, it combines these slices to create a 3D image of the scanned area.

• Option A is incorrect because a CT scan (not an X - ray) requires a computer for image creation.
• Option B is incorrect as a CT scan creates a 3D (not 2D) image and regular X - rays are 2D.
• Option D is incorrect as CT scans generally use higher (not lower) amounts of radiation compared to regular X - rays (though this can vary depending on the scan details).

Answer:

C. The CT scan uses many X - ray images in thin slices to make a 3D image.