Title :
Parallel imaging acceleration of spiral Fourier velocity encoded MRI using SPIRiT
Author :
Lyra-Leite, D.M. ; Carvalho, J.L.A.
Author_Institution :
Dept. of Electr. Eng., Univ. of Brasilia, Brasilia, Brazil
fDate :
Aug. 28 2012-Sept. 1 2012
Abstract :
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.
Keywords :
biomedical MRI; image reconstruction; iterative methods; medical image processing; parallel processing; SPIRiT technique; iterative self consistent parallel imaging reconstruction; parallel imaging acceleration; spiral Fourier velocity encoded MRI; sum of squares reconstruction; Acceleration; Biomedical imaging; Image reconstruction; Magnetic resonance imaging; Spatial resolution; Spirals; Algorithms; Blood Flow Velocity; Carotid Arteries; Fourier Analysis; Humans; Image Interpretation, Computer-Assisted; Jugular Veins; Magnetic Resonance Angiography; Neck; Vertebral Artery;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
DOI :
10.1109/EMBC.2012.6345956
