Changes in Longitudinal and Radial Strain After Coronary Embolization Detected on Velocity Encoded Phase Contrast Magnetic Resonance Imaging

Marcus Carlsson^1,2, Demetrius Dicks¹, Einar Heiberg², Alastair Martin¹, David Saloner¹, Hakan Arheden², Maythem Saeed¹

This MRI study determined the ability of phase velocity encoded (PC-MR) strain to detect the functional effects on left ventricular radial and longitudinal strain after microembolization in the LAD coronary artery in an animal model. PC-MR imaging was sensitive to dectect the changes in longitudinal and radial strain after selective LAD coronary embolization. Longitudinal strain of the patchy microinfarction declined from baseline to 1-hour after embolization, a decline that persisted at 1 week. Radial strain declined acutely 1-hour after LAD embolization and worsened at 1 week post-embolization.