Search Results - "Seitz, W S"

Cardiac valve area formula for the assessment of aortic stenosis based upon evaluation of left ventricular wall stress in diastole by Seitz, W S

“…We have investigated the application of an hydraulic orifice equation employing aortic valve pressure gradient derived from ventricular diastolic wall stress…”
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A pressure independent orifice equation for the estimation of diastolic mitral valve area in mitral insufficiency: correlation with cardiac catheterisation data using a radioactive Krypton indicator method for the determination of regurgitant filling volume by Seitz, W S, Lyngborg, K

“…We have investigated the application of an hydraulic orifice equation for the computation of diastolic mitral valve area in conditions of regurgitation. The…”
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Interpretation of the HJ interval of the normal ballistocardiogram based on the principle of conservation of momentum and aortic ultrasonic Doppler velocity measurements during left ventricular ejection by Seitz, W S, McIlroy, M B

“…The principle of conservation of momentum and the observation that blood acceleration in the ascending aorta is approximately constant during ventricular…”
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Echographic application of the Gorlin formula for assessment of aortic stenosis: correlation with cardiac catheterization in pediatric patients by Seitz, W S, McIlroy, M B, Kline, H, Operschall, J, Kashani, I A

“…We have investigated the use of M-mode echocardiography for the diagnosis of aortic valve stenosis by application of the Gorlin formula. The hemodynamic…”
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Doppler ultrasonic investigation of Raynaud's phenomenon: effect of temperature on blood velocity by McIlroy, M B, Targett, R C, Roussin, A, Seitz, W S

“…We have used spectral analysis of signals from a pulsed, range-gated Doppler ultrasonic instrument to make quantitative measurements of arterial blood flow…”
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Non-invasive determination of the aortic valve area in stenosis: hydraulic orifice formula for application to echocardiography and correlation with catheterization by Seitz, W S, Kashani, I A

“…We have investigated the validity of a hydraulic orifice formula which specifically excludes explicit dependence on the aortic valve pressure gradient in…”
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A transmission line model of the normal aorta and its branches by McIlroy, M B, Seitz, W S, Targett, R C

“…A computer model of the aorta and its branches was made based on a simulation of an electrical transmission line using T elements. The model represented the…”
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An orifice formula independent of mitral pressure gradient for the evaluation of prosthetic mitral valve obstruction by Seitz, W S, Hosenpud, J D, Schutz, R

“…We have studied an hydraulic orifice equation capable of quantifying the obstructive properties of mitral prostheses from data of a potentially less invasive…”
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Quantitative Assessment of Peripheral Arterial Obstruction in Raynaud's Phenomenon: Development of a Predictive Model of Obstructive Arterial Cross-Sectional Area and Validation with a Doppler Blood Flow Study by Seitz, Walter S., Kline, Howard J., McIlroy, Malcolm B.

“…The objective of this study was to develop a method for the analytical assessment of arterial obstruction in conditions of Raynaud's phenomenon capable of…”
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Echocardiographic Aortic Valve Area Formula for the Estimation of Obstruction in Stenosis by SEITZ, W. S., KASHANI, I. A., LUNDHOLM, E. L.

“…We have investigated the use of M-mode echocardiography for the quantification of aortic valve stenosis through the application of a hydraulic orifice equation…”
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Echographic method for the estimation of cardiac output from mitral-valve area, heart rate, and diastolic-filling period in conditions of mitral stenosis: correlation with cardiac catheterization by Seitz, W S, Spiel, M S, Operschall, J, Pachinger, O, Klicpera, M

“…An orifice equation for the non-invasive measurement of mitral-valve area is demonstrated. It is shown that by combining this expression with the assumption of…”
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Echocardiographic Formula for Computation of Left Ventricular Volume and Stroke Volume: Comparison with Cardiac Catheterization and the Teichholz Formula by SEITZ, W.S., SPIEL, M.S.

“…An elementary computational formula for estimating cardiac volume and stroke volume from either M-mode or bi-dimensional echographic data is developed from an…”
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Hydraulic orifice formula for echographic measurement of the mitral valve area in stenosis. Application to M-mode echocardiography and correlation with cardiac catheterisation by Seitz, W S, Furukawa, K

“…A mitral valve orifice equation has been formulated which allows the computation of mitral valve area (A) from the echographically measurable variables of…”
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Elementary Echographic Estimation of Cardiac Output Independent of the Symmetry and Kinetic State of the Left Ventricle in Mitral Stenosis: Potential Application to the Determination of the Circulation of Pregnancy by SEITZ, W.S., SPIEL, M.S., FURUKAWA, K.

“…An orifice equation is demonstrated which is independent of the symmetry and kinetic state of the left ventricle. The expression allows calculation of the…”
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Two-dimensional Echocardiographic Method for the Estimation of Cardiac Output Independent of Left Ventricular Geometry: Comparison with Cardiac Catheterization in Mitral Stenosis by SEITZ, Walter S., NG, Chung W., SPINNLER, Maria-Teresa

“…An hydraulic formula for the estimation of cardiac output independent of the geometric status of the left ventricle was studied by comparing the predictions…”
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Noninvasive determination of the mitral valve area in stenosis: a computational model and correlation with autopsy and open heart measurements by Seitz, W S, Operschall, E J

“…An analytical formulation has been developed which allows the computation of mitral valve area (A) from the potentially noninvasive paramaeters of hear rate…”
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Reconstruction of the Wedel channel in Heidenheim by Seitz, S W

“…The channel runs through the downtown district of Heidenheim and is a two-cell, enclosed reinforced concrete channel with a rectangular cross-section built in…”
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Medulloblastoma: example of late adult onset with statistical correlation relative to etiology by Seitz, W S, Operschall, E J

“…A case of histologically verified medulloblastoma occurring in an 88-year-old woman is described. A search of the literature indicates that with respect to age…”
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Elementary echographic estimation of cardiac out put independent of the symmetry and kinetic state of the left ventricule in mitral stenosis. Potential application to the determination of the circulation in pregnancy by SEITZ, W. S, SPIEL, M. S, FURUKAWA, M. S

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