![]() | 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 acquisition and processing Imaging and signal acquisition modalities include multi transducer, micromanometric conductance catheter based cardiac catheterization, ventriculography and angiography, echocardiography, and cardiovascular MRI. |
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Our Work in the Popular Press
How do you measure a broken heart? (June 14, 2006)
YouTube interview with Dr.Kovács. (Jan 8, 2008)
Eat less or exercise more? (Jan 10, 2008)
Man of Heart (May 1, 2008)
Recent Publication from
Cardiovascular Biophysics Laboratory
2008:
1). Zhang W, Ková cs 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]
2). 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.
[Full Text]
3). 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]
4). 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.
[Full Text]
2007:
1). Chung CS, Ková cs SJ. Pressure Phase-Plane Based Determination of the Onset of Left Ventricular Relaxation. Cardiovasc Eng. 7:162-171, 2007.
[Abstract]
2). Zhang W, Chung CS, Shmuylovich L, Ková cs 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.
[Full
Text]
3). Riordan MM, Ková cs 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]
4). Riordan MM, Ková cs 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.
[Full
Text]
5). Shmuylovich L, Ková cs 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]
6). Zhang W, Chung CS, Riordan MM, Wu Y, Shmuylovich L, Ková cs SJ. The Kinematic Filling Efficiency Index of the Left Ventricle: Contrasting Normal vs. Diabetic Physiology. Ultrasound Med. Biol., 2007;33:842-850. [Full Text]
2006:
1). Wu Y, Yu Y and Ková cs 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]
2). Zhang W, Chung CS, Ková cs 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]
3). Chung CS, Strunc A, Oliver R, Ková cs 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]
4). Wu Y and Ková cs 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-H2949 [Full
Text]
5). Riordan MM, Ková cs 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]
6). Shmuylovich L, Ková cs 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]
7). Chung CS, Ajo DM, Ková cs 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]
8). Meyer TE, Ková cs 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]
9). Chung CS, Ková cs SJ.
Consequences of Increasing Heart Rate on Deceleration Time, Velocity
Time Integral, and E/A. American Journal of Cardiology. 2006;97:130-136.
[Full
Text]
10). Riordan MM, Ková cs SJ. Quantitation of Mitral Annular Oscillations and
Longitudinal "Ringing" of the Left Ventricle: A New Window into
Longitudinal Diastolic Function. J Appl Physiol 2006 Jan;100:112 -
119.[Full
Text]
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