Isabelle Heukensfeldt Jansen1, Luca Marinelli1, J Kevin DeMarco2, Robert Y Shih2,3, Vincent B Ho2,3, and Thomas TK Foo1
1GE Global Research Center, Niskayuna, NY, United States, 2Walter Reed National Military Medical Center, Bethesda, MD, United States, 3Uniformed Services University of the Health Sciences, Bethesda, MD, United States
1GE Global Research Center, Niskayuna, NY, United States, 2Walter Reed National Military Medical Center, Bethesda, MD, United States, 3Uniformed Services University of the Health Sciences, Bethesda, MD, United States
We present a framework for using retrospective
cardiac gating with of SCIMI (DTI) data to create a 4D motion profile in brain tissue
with VENC=0.18 mm/s. Using cardiac data to bin phase information from complex
image data, we create a velocity profile for the volume over the full cardiac
cycle.
Sequence of motion in a single slice across
time. (Top) RL motion; (middle) AP motion; (bottom) SI motion, where red
(positive) indicates left, posterior, and inferior motion, respectively.
Comparison of velocity profiles from a triggered
“still frame” scan reconstructed with the full 30 q-space directions and 3
random subsets of directions. RGB color represents L/R, A/P, S/I magnitude
(speed) respectively. Although there is a slight change in SNR between the
images, the overall image is preserved.
