Ultrasound - Mayo Clinic
2024年5月3日 · Diagnostic ultrasound is a safe procedure that uses low-power sound waves. There are no known risks. Ultrasound is a valuable tool, but it has limitations. Sound waves don't travel well through air or bone. This means ultrasound isn't effective at imaging body parts that have gas in them or are hidden by bone, such as the lungs or head.
Abdominal ultrasound - Mayo Clinic
2024年11月5日 · An abdominal ultrasound is a medical imaging test that uses sound waves to see inside the belly area, also called the abdomen. It's the preferred screening test for abdominal aortic aneurysm. But the test may be used to diagnose or rule out many other health conditions.
Fetal ultrasound - Mayo Clinic
2023年6月24日 · The image below is from a 3D fetal ultrasound. This type of ultrasound can make images that are clearer and more detailed than standard fetal ultrasound images. A 3D fetal ultrasound is sometimes used to detect facial problems, bone problems or neural tube defects. Some companies offer 3D ultrasounds outside of medical settings.
Echocardiogram - Mayo Clinic
2024年11月12日 · The ultrasound wand goes through the catheter and moves near the heart. The wand gives off sound waves. It records the sound waves that bounce back from the heart. A computer changes the information into moving images. The images are seen on a monitor. A healthcare professional watches your oxygen level during the test. Stress echocardiogram
Doppler ultrasound: What is it used for? - Mayo Clinic
2023年12月5日 · Doppler ultrasound is a noninvasive test that can be used to measure the blood flow through your blood vessels. It works by bouncing high-frequency sound waves off red blood cells that are circulating in the bloodstream. A regular ultrasound uses sound waves to produce images, but can't show blood flow.
Endometriosis - Diagnosis and treatment - Mayo Clinic
2024年8月30日 · Ultrasound. This test uses sound waves to make pictures of the inside of the body. To capture the images, a device called a transducer might be pressed against the stomach area. Or it may be placed into the vagina in a version of the exam called transvaginal ultrasound. Both types of the test may be done to get the best view of the reproductive ...
Thyroid nodules - Diagnosis & treatment - Mayo Clinic
2022年2月11日 · Ultrasound. This imaging technique uses high-frequency sound waves to produce images of your thyroid gland. A thyroid ultrasound provides the best information about the shape and structure of nodules. Doctors may use it to distinguish cysts from solid nodules or to determine if multiple nodules are present.
Kidney stones - Diagnosis and treatment - Mayo Clinic
2022年6月3日 · Ultrasound, a noninvasive test that is quick and easy to perform, is another imaging option to diagnose kidney stones. Analysis of passed stones. You may be asked to urinate through a strainer to catch stones that you pass. Lab analysis will reveal the makeup of your kidney stones.
Ultrasound - Doctors & Departments - Mayo Clinic
2024年5月3日 · Ultrasound, CT scan, Barium enema, X-ray, CT urogram, Ultrasound elastography, Defecating proctogram, Barium swallow st... udy, Voiding cystourethrogram, CT enterography Show more areas of focus for Deb A. Baumgarten, M.D.
Dense breast tissue: What it means to have dense breasts
2024年3月9日 · Breast ultrasound. Ultrasound uses sound waves to make images of structures in the body. It shows the difference between solid masses and sacs filled with fluid, called cysts. Solid masses may be a sign of cancer. A diagnostic breast ultrasound is commonly used to take a closer look at areas of concern detected on a mammogram.