Merck Manual

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Overview of Imaging Tests

By

Mehmet Kocak

, MD, Rush University Medical Center

Medically Reviewed Apr 2021 | Modified Sep 2022
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Imaging tests provide a picture of the body’s interior—of the whole body or part of it. Imaging helps doctors diagnose a disorder, determine how severe the disorder is, and monitor people after the disorder is diagnosed. Most imaging tests are painless, relatively safe, and noninvasive (that is, they do not require an incision in the skin or the insertion of an instrument into the body).

Imaging tests may use the following:

For information regarding imaging tests common for specific diagnoses and screenings, see the following:

NOTE: This is the Consumer Version. DOCTORS: VIEW PROFESSIONAL VERSION
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