The test is widely used because it is noninvasive, uses no x rays, and gives excellent images. It is harmless, painless, and widely available.
Transcranial Doppler ultrasonography is a noninvasive method of analyzing blood flow in the brain.
Doppler ultrasonography uses what is called the Doppler effect to measure the rate and direction of blood flow in the vessels.
A Doppler ultrasonography test showing no restricted blood flow is a normal finding.
Ultrasonography procedures are safe, noninvasive, and painless. No special precautions are necessary.
The Doppler principle is simply that sound pitch increases as the source moves toward the listener and decreases as it moves away.
The newest addition to this test is the addition of color. Adding color to the image shows the direction and rate of blood flow more clearly.
The gel is washed off with soap and water. No other after care is needed.
Deep vein thrombosis can be detected through venography and radionuclide venography, Doppler ultrasonography, and impedance plethysmography.
direct measurement of blood flow and rates of flow, sometimes performed in conjunction with stress testing (exercise between tests).
Asim Kurjak has written: 'A Slide Atlas of Three-Dimensional Ultrasound in Gynecology and Obstetrics' 'An Atlas of Transvaginal Color Doppler' 'Textbook of Perinatal Medicine' 'Transvaginal color doppler' -- subject- s -: Color Doppler ultrasonography, Diagnosis, Female Genital Diseases, Methods, Prenatal diagnosis, Transvaginal ultrasonography, Ultrasonic Diagnosis 'Color Doppler Sonography in Gynecology and Obstetrics' 'Donald School Textbook of Ultrasound in Obstetrics & Gynecology' 'Ecografia En Medicina Materno-Fetal' 'An Atlas of Ultrasonography in Obstetrics and Gynecology - Encyclopedia of Visual Medicine Series -' 'A Slide Atlas of Ultrasound in Obstetrics - The Encyclopedia of Visual Medicine Series Slides Sets -' 'Atlas of fetal anomalies' -- subject- s -: Atlases, Fetus, Fetal Diseases, Congenital Abnormalities, Diagnosis, Abnormalities, Ultrasonography, Methods, Prenatal Ultrasonography, Ultrasonic imaging
Cranial ultrasonography is most often used in infants to diagnose problems with the brain