In imaging—specifically, medical imaging—a diagnostic system in which X-rays are passed through an object (such as a human body or head) to a certain depth and at a variety of directions. A computer is used to record the X-rays as they pass through the body, yielding an image of the body's internal structure. CAT—or a "CAT scan"—is used to diagnose biological anomalies, such as tumors and other growths.
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