![]() | Cardiovascular Division Department of Internal Medicine Program in Cell Biology and Physiology Department of Biomedical Engineering Department of Physics | |  The Cardiovascular Biophysics Laboratory employs both interdisciplinary and multidisciplinary methods encompassing selected aspects of engineering, physics, physiology, clinical cardiology, and the biomedical sciences. The overall goal is to solve basic and applied problems in physiology and medicine that have translational potential using causal, rather correlative methodologies. We thereby seek to advance the frontiers of diagnosis and therapy, as well as to serve as an environment for trainees (undergraduate, graduate, medical students, cardiology fellows and post-docs) to acquire and master concepts, to advance the state of knowledge by model-based prediction of 'new' physiology from first principles, and participate in physiologic data acquisition and analysis. Areas of interest include: -
Theoretical (mathematical) biology and physiology. -
Characterization of physical properties of cardiovascular tissue -
Maximal information extraction from in-vivo physiologic signals -
Mathematical modeling of cardiovascular function -
Nonlinear dynamics, thermodynamics and optimization principles of cardiovascular function -
Development of new technology for imaging and physiologic signal processing Imaging and signal acquisition modalities include multi transducer, micromanometric conductance catheter based cardiac catheterization, ventriculography and angiography, echocardiography, and cardiovascular MRI. | | Recent Publication from Cardiovascular Biophysics Laboratory
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2008 |
Zhang W, Kovács SJ. The Diastatic Pressure-Volume Relationship Is Not the Same as the End-Diastolic Pressure-Volume Relationship.
Am J Physiol Heart Circ Physiol.doi:10.1152/ajpheart.00200.2008. In Press.
[Abstract]
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2008 |
Riordan MM, Kovács SJ. Elucidation of spatially distinct compensatory mechanisms in diastole: radial compensation for
impaired longitudinal filling in left ventricular hypertrophy. J Appl Physiol. 2008;104:513-520.
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2008 |
Riordan MM, Weiss EP, Meyer TE, Ehsani AA, Racette SB, Villareal DT, Fontana L, Holloszy JO, and Kovács SJ. The Effects of Caloric Restriction- and Exercise-Induced Weight Loss on Left Ventricular Diastolic Function.
Am J Physiol Heart Circ Physiol. 2008;294:H1174-82.
[Abstract]
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2008 |
Chung CS, Kovács SJ. The physical determinants of left ventricular isovolumic pressure decline: Model-based prediction with in-vivo validation.
Am J Physiol Heart Circ Physiol. 2008;294:H1589-H1596.
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2007 |
Zhang W, Chung CS, Shmuylovich L, Kovács SJ. Viewpoint: Is Left Ventricular Volume During Diastasis the Real Equilibrium Volume and, What is its Relationship to Diastolic Suction? J Appl Physiol. doi:10.1152/japplphysiol.00799.2007, 2007. In Press.
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2007 |
Riordan MM, Kovács SJ. Absence of Diastolic Mitral Annular Oscillations is a Marker for
Relaxation-related Diastolic Dysfunction.
Am J Physiol Heart Circ Physiol. 2007;292:H2952-H2958.
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Text]
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2007 |
Riordan MM, Kovács SJ. Stiffness and Relaxation-based Quantitation of Radial Left Ventricular Oscillations: Elucidation of Regional Diastolic Function Mechanisms.
J Appl Physiol. 2007;102:1862-1870. [Full
Text]
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2007 |
Shmuylovich L, Kovács SJ. E-wave Deceleration Time May Not Provide an Accurate Determination of Left Ventricular Chamber Stiffness if Left Ventricular Relaxation/Viscoelasticity is Unknown. Am J Physiol Heart Circ Physiol. 2007;292: H2712-H2720. [Full
Text]
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2006 |
Zhang W, Chung CS, Riordan MM, Wu Y, Shmuylovich L, Kovács SJ. The Kinematic Filling Efficiency Index of the Left Ventricle: Contrasting Normal vs. Diabetic Physiology. Ultrasound Med. Biol., 2007;33:842-850. [Full Text]
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2006 |
Wu Y, Yu Y and Kovács SJ. Contraction-Relaxation Coupling Mechanism Characterization in the Thermodynamic Phase-Plane: Normal vs. Impaired Left Ventricular Ejection Fraction. J App Physiol. 2006;102: 1367-1373. [Full
Text]
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2006 |
Zhang W, Chung CS, Kovács SJ. Derivation and Left
Ventricular Pressure Phase Plane Based Validation of a Time Dependent
Isometric Crossbridge Attachment Model. Cardiovascular Engineering. 2006;6:132-144 . [Full
Text]
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2006 |
Chung CS, Strunc A, Oliver R, Kovács SJ. Diastolic
ventricular-vascular stiffness and relaxation relation: elucidation of
coupling via pressure phase plane-derived indexes. Am J Physiol Heart Circ
Physiol. 2006;291(5):H2415-23. [Full
Text] |
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2006 |
Wu Y and Kovács SJ. Frequency-based analysis of the
early,
rapid-filling pressure-flow relation elucidates diastolic efficiency
mechanisms. Am J Physiol Heart Circ Physiol. 2006;291:H2942-9. [Full
Text] |
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2006 |
Riordan MM, Kovács SJ. Relationship of pulmonary
vein flow to left ventricular short-axis epicardial displacement in diastole:
model-based prediction with in vivo validation. Am J Physiol Heart Circ
Physiol. 2006;291(3):H1210-5. [Full
Text] |
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2006 |
Shmuylovich L, Kovács
SJ. A load-independent index
of diastolic filling: model-based derivation with in-vivo validation in
control and diastolic dysfunction subjects. Journal of Applied Physiology.
2006; 101: 92-101. [Full
Text] |
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2006 |
Chung CS, Ajo DM,Kovács SJ. The Isovolumic
Pressure to Early Rapid Filling Decay Rate Relation: Model-based Derivation
and Validation Via Simultaneous Catheterization-Echocardiography. Journal of
Applied Physiology. 2006;100:528 - 534. [Full
Text] |
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2006 | Meyer TE, Kovács SJ, Ehsani AA, Klein S, Holloszy JO, Fontana L. Long-term Caloric Restriction Slows Cardiac Aging in Humans. Journal of the American College of Cardiology. 2006;47:398-402. [Full
Text] |
| 2006 |
Riordan MM, Kovács SJ. Quantitation of Mitral
Annular Oscillations and Longitudinal "Ringing" of the Left Ventricle: A New
Window into Longitudinal Diastolic Function. Journal of Applied Physiology.
2006 ;100:112 - 119.[Full
Text]
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2006 | Chung CS, Kovács SJ. Consequences of Increasing Heart Rate on Deceleration Time, Velocity Time Integral, and E/A. American Journal of Cardiology. 2006;97:130-136.
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2006 | Chung CS, Ajo DM, Kovács SJ. The Isovolumic Pressure to Early Rapid Filling Decay Rate Relation: Model-based Derivation and Validation Via Simultaneous Catheterization-Echocardiography. Journal of Applied Physiology. 2006;100:528 - 534
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