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.
Ecografía Doppler: ¿Para qué se usa? - Mayo Clinic
2023年12月5日 · ¿Qué es la ecografía Doppler? Respuesta de Sheldon G. Sheps, M.D. La ecografía Doppler es una prueba no invasiva que puede usarse para medir el flujo de sangre que pasa por los vasos sanguíneos. Funciona emitiendo ondas sonoras de alta frecuencia en los glóbulos rojos que circulan por el ...
Ultrasound - Mayo Clinic
2024年5月3日 · Overview. Diagnostic ultrasounds use sound waves to make pictures of the body. Ultrasound, also called sonography, shows the structures inside the body.
Carotid ultrasound - Mayo Clinic
2023年1月12日 · The ultrasound technician may use a Doppler ultrasound, which shows blood flowing through the arteries. In a Doppler ultrasound, the rate of blood flow is translated into a graph. There have been vast technological advances in carotid ultrasounds, improving the quality and resolution of the images.
Heart arrhythmia - Symptoms and causes - Mayo Clinic
2023年10月13日 · A heart arrhythmia (uh-RITH-me-uh) is an irregular heartbeat. A heart arrhythmia occurs when the electrical signals that tell the heart to beat don't work properly.
Peripheral artery disease (PAD) - Diagnosis and treatment - Mayo …
2024年8月9日 · Sound waves create pictures of how blood moves through the blood vessels of the legs or feet. Doppler ultrasound is a special type of ultrasound used to spot blocked or narrowed arteries. Angiography. This test uses imaging tests and a dye to look for blockages in the arteries. The dye is given through a blood vessel.
Echocardiogram - Mayo Clinic
2024年11月12日 · 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 …
Blood pressure chart: What your reading means - Mayo Clinic
2024年2月28日 · A blood pressure measurement over 180/120 mm Hg is called a hypertensive emergency or crisis. Seek emergency medical help for anyone with these blood pressure numbers.
Cellulitis - Symptoms & causes - Mayo Clinic
2022年5月6日 · Cellulitis (sel-u-LIE-tis) is a common, potentially serious bacterial skin infection. The affected skin is swollen and inflamed and is typically painful and warm to the touch.
Coronary calcium scan - Mayo Clinic
2023年7月22日 · Coronary calcium scan results can help determine the risk of heart attacks or strokes. Results from the scan may be used to plan or change treatment for coronary artery disease.