NDLI: Image-Based Method for Automated Phase Correction of Ghost

Content Provider	IEEE Xplore Digital Library
Author	Chunxiao Chen Limin Luo Hua Tao Shijie Wang
Copyright Year	2005
Description	Author affiliation: Dept. of Biomedical Eng., Southeast Univ., Nanjing (Chunxiao Chen; Limin Luo; Hua Tao; Shijie Wang)
Abstract	One of the most common artifacts for echo planar imaging is the ghost artifact, typically overcome with the aid of a reference scan preceding the actual image acquisition. In this work, we describe an automated free-scan-reference method for reducing ghost artifact using image-based correction. The two dimensional Fourier transformation of an entire data of image matrix is used to reconstruct two new images, one is reconstructed only by even rows, the other is only by odd rows, with the remaining ones zero-filled. Phase shift between even echoes and odd echoes can be computed by using the two images. Unwrapped phase shift gained by Marquardt-Levenber unlinear fitting can be used to suppress the ghost effectively
Starting Page	1352
Ending Page	1354
File Size	260858
Page Count	3
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1616678
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic resonance imaging Biomedical engineering Image reconstruction Biomedical imaging Transmission line matrix methods Hardware Eddy currents Degradation Working environment noise Phase noise Ghost Echo Planar Imaging Magnetic Resonance Imaging
Content Type	Text
Resource Type	Article

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