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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