Improved Efficiency in Cine DENSE using Low Resolution Phase Reference Images
Zhong X, Epstein F, Spottiswoode B
University of Virginia
The purpose of this study was to investigate whether low resolution phase reference images could be acquired to reduce the total scan time without significantly increasing errors in measured myocardial displacement and strain in DENSE MRI. A cine DENSE sequence was modified to acquire phase reference images with different spatial resolutions. Data showed that displacement and strain errors increase as the phase reference image resolution decreases. Using no phase reference data lead to the largest errors in displacement and strain. Replacing the full resolution reference scan with an appropriate low resolution scan decreased acquisition time by 20% with minimal errors.