Results 111 to 120 of about 223,232 (165)
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[Doppler effect in cardiology. Continuous Doppler, pulsed Doppler, Doppler color].
Presse medicale (Paris, France : 1983), 1989Echocardiography 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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Tissue Doppler echocardiography
Current Opinion in Cardiology, 1999Tissue Doppler echocardiography (TDE) is a relatively recent addition to the diagnostic ultrasonographic examination. This is similar to routine Doppler ultrasonography to assess blood flow, but technologic features focus on lower velocity frequency shifts. Two techniques are used to assess myocardial function: pulsed TDE and color-coded TDE.
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2012
The aim of this clinical study was to examine and compare the efficacy of two intravenously administered inotropic agents, levosimendan and milrinone in acute heart failure vs biventricular implatation measured by hemodynamic parameters and simple markers of cardiac function.
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The aim of this clinical study was to examine and compare the efficacy of two intravenously administered inotropic agents, levosimendan and milrinone in acute heart failure vs biventricular implatation measured by hemodynamic parameters and simple markers of cardiac function.
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Doppler Signal and Doppler Waveform Analysis
2021B-mode ultrasonography is used to determine the “morphology” of anatomical structures and organs; Doppler methods have the potential to offer “functional” information through blood circulation analysis.
Luca Aiani, Alberto Martegani
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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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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
openaire +2 more sources
Doppler ambiguity in laser Doppler velocimeters
Applied Physics Letters, 1973An analysis of the Doppler ambiguity for the laser Doppler velocimeter is presented which accounts for the signal statistics based on a Gaussian beam intensity. Results are in excellent agreement with experiment.
W. K. George, N. S. Berman
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Pediatrics, 1983
To the Editor.— The determination of cerebral blood velocity in the newborn infant using transfontanel Doppler ultrasound has been discussed in detail in two recent commentaries.1,2 Whereas the use of the Doppler effect to determine blood velocity is well accepted, it is apparent that considerable controversy exists regarding the ability
D G, Batton, J, Hellmann, M J, Maisels
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To the Editor.— The determination of cerebral blood velocity in the newborn infant using transfontanel Doppler ultrasound has been discussed in detail in two recent commentaries.1,2 Whereas the use of the Doppler effect to determine blood velocity is well accepted, it is apparent that considerable controversy exists regarding the ability
D G, Batton, J, Hellmann, M J, Maisels
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Transcranial Doppler Ultrasonography
Neurosurgery Clinics of North America, 1994Transcranial Doppler ultrasonography is an extremely useful adjunct in neurosurgical intensive care. Continuous improvements in TCD equipment as well as computer software have improved examination success and also vessel identification. Recent expanding applications of TCD have also allowed the study of disorders of control of the cerebral circulation.
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