[HTML][HTML] DENSE: displacement encoding with stimulated echoes in cardiac functional MRI

AH Aletras, S Ding, RS Balaban… - Journal of magnetic …, 1999 - ncbi.nlm.nih.gov
AH Aletras, S Ding, RS Balaban, H Wen
Journal of magnetic resonance (San Diego, Calif.: 1997), 1999ncbi.nlm.nih.gov
Displacement encoding with stimulated echoes (DENSE) was developed for high-resolution
myocardial displacement mapping. Pixel phase is modulated by myocardial displacement
and data spatial resolution is limited only by pixel size. 2D displacement vector maps were
generated for the systolic action in canines with 0.94× 1.9 mm nominal in-plane resolution
and 2.3 mm/π displacement encoding. A radial strain of 0.208 was measured across the free
left ventricular wall over 105 ms during systole. DENSE displacement maps require small …
Abstract
Displacement encoding with stimulated echoes (DENSE) was developed for high-resolution myocardial displacement mapping. Pixel phase is modulated by myocardial displacement and data spatial resolution is limited only by pixel size. 2D displacement vector maps were generated for the systolic action in canines with 0.94× 1.9 mm nominal in-plane resolution and 2.3 mm/π displacement encoding. A radial strain of 0.208 was measured across the free left ventricular wall over 105 ms during systole. DENSE displacement maps require small first-order gradient moments for encoding. DENSE magnitude images exhibit black-blood contrast which allows for better myocardial definition and reduced motion-related artifacts.
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