Sonography
Sonography is a diagnostic medical test that uses high-frequency sound waves—also called ultrasound waves—to bounce off of structures in the body and create an image. Fittingly, the test is also referred to as an ultrasound or sonogram.
Sonography uses a device called a transducer on the surface of the skin to send ultrasound waves and listen for an echo. A computer translates the ultrasound waves into an image. A trained technician can see, measure, and identify structures in the image. A healthcare provider then reads the images to help diagnose the issue or problem at hand.
This article explains the purpose and limitations of sonography. To demystify the test, this article also explains what to expect before and during the test.
Purpose of the Test
A sonogram captures a live image of what’s going on inside the body. Sonography is useful for evaluating the size, shape, and density of tissues to help diagnose certain medical conditions. A sonogram is most commonly used is to monitor the development of the uterus and fetus during pregnancy. It can also be used to evaluate glands, breast lumps, joint conditions, bone disease, testicular lumps, or to guide needles during biopsies.
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