Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
468-04-008 ISMRM Abstract

Tau constant of active ventricular relaxation correlates with ejection fraction in patients with single-ventricle physiology

Primary: Cardiovascular - Myocardium
Secondary: Pediatrics - Cardiovascular
468-04-008 · Pediatric Cardiopulmonary MRI · Tuesday, 12 May, 2:35 PM–3:30 PM · Digital Posters Row I
Accepted
Shruti Patil1, Tarique Hussain 1,2,3,4, Ryan Butts1, Lauren Thai1, Maria Gusseva1
1University of Texas Southwestern Medical Center, Dallas, United States of America
2Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, United States of America
3Heart Center, Children's Health, Dallas, United States of America
4Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, United States of America
Presenting Author: Tarique Hussain

Synopsis

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References

1. Weiss JL, Frederiksen JW, Weisfeldt ML. Hemodynamic determinants of the time-course of fall in canine left ventricular pressure. J Clin Invest. Sep 1976;58(3):751-60. doi:10.1172/jci108522 [doi]
2. Yoshizane T, Kawamura I, Kawasaki M, et al. Validation by Cardiac Catheterization of Noninvasive Estimation of Time Constant of Left Ventricular Pressure Decline as an Index of Relaxation by Speckle Tracking Echocardiography. Am J Cardiol. Jun 15 2018;121(12):1645-1651. doi:10.1016/j.amjcard.2018.02.061 [doi]
3. Hay I, Rich J, Ferber P, Burkhoff D, Maurer MS. Role of impaired myocardial relaxation in the production of elevated left ventricular filling pressure. Am J Physiol Heart Circ Physiol. Mar 2005;288(3):H1203-8. doi:10.1152/ajpheart.00681.2004 [doi]
4. Rommel KP, von Roeder M, Oberueck C, et al. Load-Independent Systolic and Diastolic Right Ventricular Function in Heart Failure With Preserved Ejection Fraction as Assessed by Resting and Handgrip Exercise Pressure-Volume Loops. Circ Heart Fail. Feb 2018;11(2):e004121. doi:10.1161/circheartfailure.117.004121 [doi]
5. Chapelle D, Le Tallec P, Moireau P, Sorine M. Energy-preserving muscle tissue model: formulation and compatible discretizations. International Journal for Multiscale Computational Engineering. 2012;10:189-211. doi: 10.1615/IntJMultCompEng.2011002360 [doi]
6. Caruel M, Chabiniok R, Moireau P, Lecarpentier Y, Chapelle D. Dimensional reductions of a cardiac model for effective validation and calibration. Biomech Model Mechanobiol. 2014;13:897-914. doi: 10.1007/s10237-013-0544-6 [doi]
7. Gusseva M, Hussain T, Friesen CH, Moireau P, Tandon A, Patte C, Genet M, Hasbani K, Greil G, Chapelle D, et al. Biomechanical Modeling to Inform Pulmonary Valve Replacement in Tetralogy of Fallot Patients After Complete Repair. Can J Cardiol. 2021;37:1798-1807. doi: 10.1016/j.cjca.2021.06.018 [doi]

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http://echo.ismrm.org/p/ISMRM2026/468-04-008