Doppler ultrasound: What is it used for? - Mayo Clinic
Dec 5, 2023 · 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.
Echocardiogram - Mayo Clinic
Nov 12, 2024 · Doppler echocardiogram. Sound waves change pitch when they bounce off blood cells moving through the heart and blood vessels. These changes are called Doppler signals. This part of the test measures the speed and direction of blood flow within the heart and vessels.
Ultrasound - Mayo Clinic
May 3, 2024 · Overview. Diagnostic ultrasounds use sound waves to make pictures of the body. Ultrasound, also called sonography, shows the structures inside the body.
Claudication - Symptoms & causes - Mayo Clinic
Mar 2, 2022 · Claudication is pain caused by too little blood flow to muscles during exercise. Most often this pain occurs in the legs after walking at a certain pace and for a certain amount of time — depending on the severity of the condition.
Arteriosclerosis / atherosclerosis - Symptoms and causes
Symptoms. Mild atherosclerosis usually doesn't cause symptoms. Atherosclerosis symptoms usually don't happen until an artery is so narrowed or clogged that it can't send enough blood to organs and tissues.
Mitral valve stenosis - Symptoms and causes - Mayo Clinic
Mitral valve stenosis can make you tired and short of breath. Other symptoms may include irregular heartbeats, dizziness, chest pain or coughing up blood.
Peripheral artery disease (PAD) - Symptoms and causes
Aug 9, 2024 · Peripheral artery disease (PAD) is often caused by a buildup of fats, cholesterol and other substances in and on the artery walls, a condition called atherosclerosis.
Tricuspid valve regurgitation - Symptoms and causes
Mar 12, 2024 · Tricuspid valve regurgitation is a type of heart valve disease. The valve between the two right heart chambers doesn't close as it should.
Lumbar puncture (spinal tap) - Mayo Clinic
May 4, 2024 · A lumbar puncture, also known as a spinal tap, is a test used to diagnose certain health conditions. It's performed in your lower back, in the lumbar region.
Ventricular septal defect (VSD) - Symptoms & causes - Mayo Clinic
Oct 21, 2022 · Ventricular septal defect (VSD) occurs as the baby's heart is developing during pregnancy. The muscular wall separating the heart into left and right sides doesn't form fully, leaving one or more holes.