Which of the following is a limitation of computerized tomography?

A) It does not accurately reveal tumors and injuries.
B) It only shows two-dimensional images.
C) It exposes patients to X-rays, which can be harmful.
D) It provides an image of the brain's activity rather than its structure.

Computerized tomography (CT) exposes patients to X-rays, which can be harmful. This is a limitation of the technology compared to other imaging methods that do not use ionizing radiation. CT scans should be used only when medically necessary and with proper consideration of the potential risks and benefits. The other options (A, B, and D) are not accurate limitations of CT. CT is commonly used to reveal tumors and injuries, provides three-dimensional images rather than two-dimensional, and shows the brain's structure rather than its activity (which is the domain of techniques such as functional MRI).