An improved algorithm for rotational motion artifact suppression in MRI

Chaminda Weerasinghe; Hong Yan

doi:10.1109/42.700744

Author(s)

Chaminda Weerasinghe
Hong Yan

Detail(s)

Original language	English
Pages (from-to)	310-317
Journal / Publication	IEEE Transactions on Medical Imaging
Volume	17
Issue number	2
Publication status	Published - Apr 1998
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1109/42.700744 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0032034226&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(f754b12f-c3c3-4423-bbb9-8d7622469806).html

Abstract

An improved algorithm for planar rotational motion artifact suppression in standard two-dimensional Fourier transform magnetic resonance images is presented. It is shown that interpolation of acquired view data on the uncorrupted fc-space create data overlap and void regions. We present a method of managing overlap data regions, using weighted averaging of redundant data. The weights are assigned according to a priority ranking based on the minimum distance between the data set and the fc-space grid points. An iterative estimation technique for filling the data void regions, using projections onto convex sets (POCS), is also described. The method has been successfully tested using computer simulations. © 1998 IEEE.