Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Valmik Bhargava"'
Autor:
Valmik Bhargava, Paul L. Wolf, Katsufumi Mizushige, Bruno Cotter, Koji Ohmori, Elisabeth Leistad, Anthony N. DeMaria
Publikováno v:
Circulation. 103:2021-2027
Background —Although defects on intracoronary myocardial contrast echocardiography (MCE) indicate loss of viability after reperfusion, opacified segments may also exhibit persistent dyssynergy. Therefore, we related the intensity and texture of opa
Autor:
Robert J. Russo, Bruce J. Kimura, Armin Arbab-Zadeh, Anthony N. DeMaria, William F. Penny, Valmik Bhargava
Publikováno v:
American Heart Journal. 138:865-872
Background: Motion of the intravascular ultrasound (IVUS) probe within the coronary artery from cardiac contraction may result in artifacts during 3-dimensional ultrasound image reconstruction and inaccurate measurements of coronary compliance. The p
Publikováno v:
American Heart Journal. 120:1058-1072
Eighty patients with ischemic heart disease and 17 normal subjects were evaluated for left ventricular regional wall motion by means of a new method. The wall motion analysis is based on video intensity. This technique uses a temporally sliding analy
Publikováno v:
The International Journal of Cardiac Imaging. 6:85-96
Left ventricular regional wall motion in ischemic heart disease was evaluated and compared using three different methods based on radiographic ventriculograms. Radial method uses an internal reference system, and centerline method employs an external
Autor:
Valmik Bhargava
Publikováno v:
Computerized Medical Imaging and Graphics. 14:107-118
A new computerized video intensity based method to evaluate regional wall motion for a frame by frame analysis has been developed. A region of interest is defined, and its average time-intensity curve is computed for the cardiac cycle. For each time
Publikováno v:
Catheterization and cardiovascular diagnosis. 35(3)
We report a case of intravascular ultrasound (IVUS) imaging of a chronic total coronary artery occlusion angioplasty initially complicated by subintimal wire penetration. IVUS provided unique images of wire position and a “double-barrel” lumen th
Publikováno v:
International journal of cardiac imaging. 8(4)
Left ventricular regional wall motion was analyzed from angiographic ventriculograms in 51 subjects, 18 of these served as controls, 10 were hypertensive with coronary artery disease, and 23 had a history of hypertension without coronary artery disea
Publikováno v:
Journal of Electrocardiology. 18:35-40
Dilated cardiomyopathy is associated with an increase in transverse plane QRS voltage but a decrease in frontal plane QRS voltage. To study this paradoxical relationship further, electrocardiograms (ECGs) were retrospectively analyzed from five group
Autor:
Valmik Bhargava, Julio F. Tubau, Charles B. Higgins, Dennis Costello, Martin M. LeWinter, Robert A. Slutsky, Kenneth H. Gerber
Publikováno v:
Investigative Radiology. 17:233-240
In fifteen prospective patients with aortic stenosis undergoing transseptal cardiac catheterization, dye-dilution and count-based estimates of pulmonary blood volume (PBV) were performed. Three radionuclide methods were evaluated. Two were based on e
Autor:
Dennis Costello, Mathew Horn, Connie Neveu, Wayne Hooper, Robert A. Slutsky, Andrew Taylor, Kenneth M. Moser, Valmik Bhargava
Publikováno v:
Catheterization and Cardiovascular Diagnosis. 8:597-606
The purpose of this study was to evaluate a number of equilibrium radionulide methods for analyzing right ventricular size and function, in an attempt to determine if any of a variety of approaches could accurately characterize right ventricular hemo