Cardiovascular Magnetic Resonance Imaging

Our group has developed real-time cardiovascular magnetic resonance (CMR) imaging approaches as well as self-gating strategies. We've also utilize advanced imaging to better evaluate cardiovascular flow. More details on these efforts can be found below.

Real-Time Cardiac MRI

We have developed techniques to perform real-time cardiac MRI in normal subjects, clinical patients, and translational animal studies. Our techniques overcome the conventional sampling limitations of MRI systems and allow us to clearly visualize irregular heart beats (arrhythmias). We've also used these methods to develop advanced estimates of cardiovascular function such as PV loops and end-systolic pressure-volume relations (ESPVR).

Real-time MRI of a patient with sinus rhythm followed by an arrhythmia

Self-gated MR Imaging

Conventional cardiac MR imaging techniques combine data acquired several heartbeats to increase image spatial and temporal resolution. This can prove challenging in patients with irregular heart rhythms or changing hemodynamics. We have developed techniques which sort acquired data based on physiologic information and result in high resolution imaging of arrhtymic beats

Self-gating of a patient with trigeminy allows visualization of three contractions

Advanced Flow Evaluations using MRI

The spatial and temporal changes of blood flow can be observed with cardiac MRI. We have used this technique to better evaluate patients and better quantify flow patterns such as the presesnce of vortices.