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Abstract #4884

Cardiac MRI measurement of right ventricular strain using feature tracking in a model of embolic pulmonary hypertension.

Zachary Borden1, Donald Benson1, Alejandro Roldan2, Heidi Kellihan3, Ashley Mulchrone4, Naomi Chesler4, and Christopher Francois1

1Radiology, University of Wisconsin-Madison, Madison, WI, United States, 2Radiology and Medical Engineering, University of Wisconsin-Madison, Madison, WI, United States, 3Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States, 4Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States

Right ventricular strain was assessed using an MRI tissue tracking algorithm on bSSFP axial sequences in both acute and chronic embolic pulmonary hypertension canine models. Strain values were heterogeneous in the acute population with statistically significant decreases in acute radial and longitudinal strain rate and chronic radial and longitudinal strain and strain rate values. Findings suggest MRI cardiac strain measurement is a promising technique in the clinical evaluation of post embolic pulmonary hypertension patients.

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