Texas Medical Assistant Certification Practice Test

Which type of imaging technology uses high-frequency sound waves to view internal body structures and tissues?

1. Computed tomography

2. Nuclear medicine

3. Fluoroscopy

4. Sonography

The correct answer is: Sonography

Sonography is a medical imaging technique that utilizes high-frequency sound waves to create images of internal body structures and tissues. During a sonography procedure, a transducer emits sound waves that penetrate the body and bounce off various tissues. These reflected waves are then captured and converted into visual images that can be used for diagnostic purposes. This method is particularly useful for visualizing soft tissues, such as organs and blood vessels, which are not as easily seen with other imaging modalities like X-rays or CT scans that primarily look at denser structures. Sonography is widely used in various medical fields, including obstetrics for monitoring fetal development and in cardiology for assessing heart conditions. Other options listed, such as computed tomography, nuclear medicine, and fluoroscopy, operate on different principles and technologies, focusing on ionizing radiation or other imaging methods that serve distinct purposes in medical diagnostics.