Daniel
Alejandro Auger1, Xiaodong Zhong2, Ernesta Meintjes1,
Fred Epstein3, Bruce Spottiswoode1,4
1MRC/UCT Medical Imaging Research Unit,
University of Cape Town, Cape Town, Western Cape, South Africa; 2MR
R&D Collaborations, Siemens Medical Solutions, Atlanta, GA, United
States; 33Departments of Radiology and Biomedical Engineering,
University of Virginia, ,
Charlottesville VA, United States; 4Radiology, University of
Stellenbosch, Cape Town, South Africa.
Displacement
encoding with stimulated echoes (DENSE) is a quantitative MRI technique used for
measuring myocardial displacement and strain at a high spatial resolution.
Studies quantifying the motion of the right ventricle (RV) have been limited
by the RVs thin wall, asymmetric geometry and complex motion. A
free-breathing navigator gated spiral 3D cine DENSE sequence has recently
been developed, thus providing a well suited tool for capturing the complex
behavior of the RV. This study involves analyzing the RVs 3D motion and
strain at a previously unattainable spatial resolution. The results are
consistent with previous studies using myocardial tagging.