Abstract
Background Three-directional PVM is capable of measuring regional myocardial velocities. Current techniques use Cartesian k-space coverage, and navigator-gated high spatial and temporal resolution acquisitions are long [1,2]. In addition, they use prospective ECG-gating and analysis of the full cardiac cycle is not possible. The aim of this study is to develop a high temporal and spatial resolution PVM technique using efficient spiral k-space coverage and retrospective ECG-gating which will allow detailed analysis of the entire cardiac cycle, including atrial systole which accounts for 20-30% of leftventricular filling in healthy motion [3]
Highlights
Three-directional PVM is capable of measuring regional myocardial velocities
Retrospective gating allows full coverage of the cardiac cycle with 60 phases per RR-interval
The SDs of to those peak (TTP) values is small for the early systolic peaks (18.0ms for mid radial velocities, for example) but increases for the corresponding early diastolic (68.5ms) and late diastolic (129.3ms) peaks due to heart-rate variations in the healthy subject cohort
Summary
Three-directional PVM is capable of measuring regional myocardial velocities. Current techniques use Cartesian k-space coverage, and navigator-gated high spatial and temporal resolution acquisitions are long [1,2]. They use prospective ECG-gating and analysis of the full cardiac cycle is not possible. The aim of this study is to develop a high temporal and spatial resolution PVM technique using efficient spiral k-space coverage and retrospective ECG-gating which will allow detailed analysis of the entire cardiac cycle, including atrial systole which accounts for 20-30% of leftventricular filling in healthy motion [3]
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