Results 251 to 260 of about 449,448 (310)
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The Doppler paradox

Echocardiography, 2017
Obstructive prosthetic valve thrombosis (PVT) is a rare but severe complication that usually occurs in the presence of suboptimal anticoagulation. Although fluoroscopy is commonly used to detect abnormal leaflet motion as a surrogate marker for PVT, its inability to directly visualize adjacent tissue and valve physiology leaves it susceptible to miss ...
Ioannis Ntalas   +3 more
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Doppler Echocardiography

Pediatric Annals, 1987
The advancements in Doppler methodology in the past decade have dramatically changed the way we assess children with heart disease. Techniques to determine pressures, gradients, shunt flows, and regurgitant lesions have shifted the noninvasive studies into areas that were strictly the venue of catheterization a decade ago. The more recent color Doppler
M S, Snyder, J E, O'Loughlin
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Transcranial Doppler

2016
Transcranial Doppler ultrasonography (TCD) is the only diagnostic modality that provides a reliable evaluation of intracranial blood flow patterns in real-time. The physiological information obtained from TCD is complementary to the anatomical details obtained from other neuroimaging modalities.
Vijay K, Sharma   +2 more
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Doppler Echocardiography

Pediatric Cardiology, 2002
We describe concepts important in the clinical application of continuous wave, pulsed wave, and color Doppler flow imaging. In the second half of this manuscript, the application of these tools in pediatric echocardiography is addressed.
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The Doppler Equation

Echocardiography, 2004
Andrew A. Pellett, Ph.D., R.D.C.S.∗, and Edmund K. Kerut, M.D., F.A.C.C., F.A.S.E.† ∗Department of Cardiopulmonary Science, Louisiana State University Health Sciences Center, New Orleans, Louisiana; †Heart Clinic of Louisiana, Marrero, Louisiana; Cardiovascular Research Laboratory, LSU Health Sciences Center, New Orleans, Louisiana; Division of ...
Andrew A, Pellett, Edmund K, Kerut
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[Doppler effect in cardiology. Continuous Doppler, pulsed Doppler, Doppler color].

Presse medicale (Paris, France : 1983), 1989
Echocardiography has contributed to the exploration of the heart by providing much information, and it has even given rise to new semiological concepts. However, abnormalities of intracardial blood flow, notably shunts and regurgitations, could only be diagnosed indirectly from their effects on cardiac cavities.
Y, Houdas   +3 more
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Localization by Doppler Derivatives and Doppler-Shifted Frequencies

IEEE Transactions on Signal Processing
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiaochuan Ke, K. C. Ho 0001
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Doppler-free/Doppler-sliced ion imaging

Physical Chemistry Chemical Physics, 2006
We demonstrate a hybrid Doppler-free/Doppler-sliced ion imaging approach that is well-suited for detection of H or D atoms. The method relies on 2 + 1 resonant ionization with identical, nearly counterpropagating beams that are coplanar but directed at a small angle relative to the detector face.
Cunshun, Huang   +4 more
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The doppler family

Ultrasound in Medicine & Biology, 1990
Doppler spent more than twelve years in Prague, during which time he not only produced the majority and the most famous of his scientific works, but also married a devoted wife who bore him five children during their stay in the golden city. It is therefore not out of place here to take a brief look at Christian Doppler, not so much as a scientist, but
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