Parallel imaging acceleration of spiral Fourier velocity encoded MRI using SPIRiT.
This paper demonstrates parallel imaging acceleration of spiral Fourier velocity encoded MRI using the iterative self-consistent parallel imaging reconstruction (SPIRiT) technique. Magnitude images and time-velocity distributions obtained with image domain SPIRiT and sum-of-squares reconstruction are compared, for 2-fold and 4-fold undersampling. We show that SPIRiT is able to reduce spatial aliasing from undersampled time-velocity distributions, with good results for 2-fold undersampling, and moderately good results for 4-fold undersampling.
Department of Electrical Engineering, University of Brasilia, Brasilia, DF, Brazil. davi@ieee.org
Davi M
DM
Lyra-Leite
Joao L A
JL
Carvalho
D000465:Algorithms; D001783:Blood Flow Velocity; D002339:Carotid Arteries / Q000502:physiology; D005583:Fourier Analysis; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007601:Jugular Veins / Q000502:physiology; D018810:Magnetic Resonance Angiography / Q000706:statistics & numerical data*; D009333:Neck / Q000098:blood supply; D014711:Vertebral Artery / Q000502:physiology