2023年12月5日 · A Doppler ultrasound can estimate how fast blood flows by measuring the rate of change in its pitch, also called frequency. A technician trained in ultrasound imaging, called a sonographer, performs the Doppler ultrasound. The sonographer presses a small hand-held device against the skin over the area of your body being examined.

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 ...

2022年5月3日 · Doppler ultrasound. High-frequency sound waves help your doctor see the arteries and kidneys and check their function. This procedure also helps your doctor find blockages in the blood vessels and measure their severity. CT scan.

2025年1月15日 · Transcranial Doppler test, Telestroke, Carotid ultrasound, Transient ischemic attack, Cerebrovascular disease, Intracer... ebral hemorrhage, Ischemic stroke. Show more areas of focus for Gyanendra Kumar, M.D.

Role of cardiac MRI in the assessment of cardiac amyloidosis — Although biopsy is still the gold standard of diagnosis for patients with suspected cardiac amyloidosis, noninvasive cardiac MRI offers superior ability to characterize the myocardial tissue on post-contrast myocardial delayed enhancement sequences.

The ankle-brachial index test is a quick, simple way to check for peripheral artery disease (PAD). The disease happens when narrowed arteries reduce the blood flow to the arms or legs.

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.

2024年11月5日 · Risks. There are no known risks. Abdominal ultrasound is a safe, painless procedure. But you may have some brief discomfort if the healthcare professional presses on an area that is sore or tender.

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 …

2023年4月25日 · Abdominal aortic aneurysm. An abdominal aortic aneurysm occurs when a lower part of the body's main artery, called the aorta, becomes weakened and bulges.