Types of Imaging Tests
Updated: Aug 20, 2020
Imaging is the process of creating a visual representation of the inside of the body for clinical analysis and medical treatment. In short, it provides a picture of the body's interior.
The goal of medical imaging is to:
diagnose a disorder,
determine the severity of the disorder, and
monitor a patient after the disorder is diagnosed for treatment.
Imaging tests send forms of energy through the body. The reaction of the body helps create images. These images can be in 2D or 3D.
There are several types of imaging tests, such as:
The image above belongs to UVA Radiology and Medical Imaging and can be found here.
While X-rays, CT scans, and PET scans use radiation, MRIs and ultrasounds do not.
Imaging techniques may involve contrast agents or dyes. These substances are swallowed, injected, or inserted to highlight tissues or structures to be examined in greater detail. Examples include:
Radiopaque contrast agents (e.g., iodine, barium)
Paramagnetic contrast agents (e.g., gadolinium)
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