TY - CHAP
T1 - Software-Based Algorithm for Modeling and Correction of Gradient Nonlinearity Distortions in Magnetic Resonance Imaging
AU - Lee, Tom S.
AU - Schubert, Keith E.
AU - Schulte, Reinhard W.
PY - 2009/9/4
Y1 - 2009/9/4
N2 - Functional radiosurgery is a noninvasive stereo-tactic technique that requires magnetic resonance image (MRI) sets with high spatial resolution. Gradient nonlin-earities introduce geometric distortions that compromise the accuracy of MRI-based stereotactic localization. We present a gradient nonlinearity correction method based on a cubic phantom MRI data set. The approach utilizes a sum of spherical harmonics to model the geometrically warped planes of the cube and applies the model to correct arbitrary image sets acquired with the same scanner. In this paper, we give a detailed description of the Matlab distortion correction program, report on its performance in stereotactic localization of phantom markers, and discuss the possibility to accelerate the code using General-Purpose Computing on Graphics Processing Units (GPGPU) techniques. © 2008 IEEE.
AB - Functional radiosurgery is a noninvasive stereo-tactic technique that requires magnetic resonance image (MRI) sets with high spatial resolution. Gradient nonlin-earities introduce geometric distortions that compromise the accuracy of MRI-based stereotactic localization. We present a gradient nonlinearity correction method based on a cubic phantom MRI data set. The approach utilizes a sum of spherical harmonics to model the geometrically warped planes of the cube and applies the model to correct arbitrary image sets acquired with the same scanner. In this paper, we give a detailed description of the Matlab distortion correction program, report on its performance in stereotactic localization of phantom markers, and discuss the possibility to accelerate the code using General-Purpose Computing on Graphics Processing Units (GPGPU) techniques. © 2008 IEEE.
KW - Distortion correction algorithm
KW - Functional radiosurgery
KW - Magnetic resonance imaging
KW - Matlab
UR - http://www.r2labs.org/pubs/camera_WCECS2008_IEEE_ICCSA_91.pdf
UR - https://www.mendeley.com/catalogue/e1c3f892-1499-39ee-89e5-e46e4ec11a43/
U2 - 10.1109/WCECS.2008.15
DO - 10.1109/WCECS.2008.15
M3 - Chapter
SN - 9780769535555
T3 - World Congress on Engineering
SP - 52
EP - 61
BT - Advances in Electrical and Electronics Engineering - IAENG Special Edition of the World Congress on Engineering and Computer Science 2008
T2 - Advances in Electrical and Electronics Engineering - IAENG Special Edition of the World Congress on Engineering and Computer Science 2008, WCECS 2008
Y2 - 22 October 2008 through 24 October 2008
ER -