Right Ventricular Strain Imaging with Single-Acquisition Simultaneous 3-D SPAMM

Hazel D Sarah Rovno¹, Chun Xu², Lawrence Dougherty¹, James J. Pilla¹, ², Jeremy McGarvey², Robert C. Gorman², Joseph H. Gorman, III², Walter R. T. Witschey¹,

Single-acquisition, simultaneous 3-D SPAMM strain imaging of the right ventricle permits assessment of direction and magnitude of regional strains in the right ventricle, at different levels base to apex, and along the wall. 4 swine, 2 healthy, 2 post-infarction were imaged with this sequence. An optical flow method was used for tag tracking, and principal systolic strain was calculated from these displacements using a custom program. Maximal 3-D strain over systole was assessed on multiple regions of interest in both ventricles. Trends in strain data were consistent with theoretical expectations, validating this method.