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Ultrasound is a diagnostic test that uses sound waves to produce images.  The ultrasound system uses a computer and a transducer, which is a type of sound transmitter.  The transducer sends high-pitched sounds into the body and listens for echoes and they are sent back from the various tissues in the body.  The computer takes these “echoes” and translates them onto the screen as images that the Sonographer can view and print images for the Radiologist to examine and interpret.  Ultrasound in a valuable imaging tool that can provide important diagnostic information about cysts, solid masses, lesion within the abdomen, urinary tract and pelvis, and vascular diseases such as arteriosclerosis of the carotid vessels and arteries.

Doppler Ultrasound

An application of Ultrasound used to detect moving blood cells or other moving structures with the direction and speed of their movement.  This permits real-time viewing of blood flow and aids in the evaluation of the major arteries and veins of the body, heart and alos used in obstetrics for fetal monitoring.

Carotid Ultrasound

Carotid imaging identifies the extent of plaque within the major arteries and veins of the neck.  It can determine narrowing of the vessels and detect blockages or reduced blood flow that could cause stroke.


Central Texas Medical Center
1301 Wonder World Drive
San Marcos, TX 78666