Ultrasound, also known as sonography, is a medical procedure that allows visualization of tissues and organs inside the body using high-frequency sound waves. This technology produces detailed images of internal structures, particularly soft tissues and organs filled with fluid, although it is less effective for examining air-filled organs or bones.
Ultrasound is utilized for various purposes, including monitoring the progress of the fetus during pregnancy. Additionally, it is valuable for diagnosing conditions such as cysts, evaluating the size and shape of abdominal and pelvic organs, detecting gallstones, and identifying blood clots in the legs.
The procedure
During an ultrasound procedure, a small amount of gel is applied to the skin over the area to be scanned, facilitating the transmission of sound waves into the body. The medical professional then moves the ultrasound instrument, known as a transducer, back and forth through the gel. This device emits ultrasound waves into the body and receives their echoes.
Patients undergoing a scan may be asked to hold their breath to optimize image quality. The echoes received by the transducer are processed by a computer and displayed on a screen in the ultrasound room. After the scan is complete, the gel is wiped off.
Following an ultrasound scan, there are typically few precautions necessary. Patients can return to their normal routine and diet once they leave the clinic. However, if ultrasound was used during a needle biopsy, your doctor may provide specific follow-up instructions.