Retrospective removal of k-space artifacts for echo-planar images: Noise reduction algorithms for spike suppression

Roderick W McColl; Geoffrey D. Clarke; Ronald M Peshock

doi:10.1117/12.317085

Retrospective removal of k-space artifacts for echo-planar images: Noise reduction algorithms for spike suppression

Roderick W McColl, Geoffrey D. Clarke, Ronald M Peshock

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

High demands are made of the gradient systems of MRI scanners during acquisition of echo-planar images. These may occasionally lead to spurious noise added to the received data in the form of short duration, high intensity "spikes." If these spikes are not caught prior to image formation, a severely degraded image may be formed. In the acquisition of functional MRI data this degradation may prohibit subsequent analysis of the data for identification of activated brain regions. We have devised several algorithms to isolate and remove these spurious spikes prior to the Fourier transform, and in one example show that subsequent fMRI analyses are possible. By contrast, the analysis is either impossible or produces differing results without this processing step.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	J.T. Dobbins III, J.M. Boone
Pages	783-792
Number of pages	10
Volume	3336
DOIs	https://doi.org/10.1117/12.317085
State	Published - 1998
Event	Medical Imaging 1998: Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 22 1998 → Feb 24 1998

Other

Other	Medical Imaging 1998: Physics of Medical Imaging
Country/Territory	United States
City	San Diego, CA
Period	2/22/98 → 2/24/98

Keywords

Artifact
Echo-planar imaging
Functional magnetic resonance imaging
k-space
Suppression

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

Access to Document

10.1117/12.317085

Cite this

Retrospective removal of k-space artifacts for echo-planar images: Noise reduction algorithms for spike suppression. / McColl, Roderick W; Clarke, Geoffrey D.; Peshock, Ronald M.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / J.T. Dobbins III; J.M. Boone. Vol. 3336 1998. p. 783-792.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

McColl, RW, Clarke, GD & Peshock, RM 1998, Retrospective removal of k-space artifacts for echo-planar images: Noise reduction algorithms for spike suppression. in JT Dobbins III & JM Boone (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 3336, pp. 783-792, Medical Imaging 1998: Physics of Medical Imaging, San Diego, CA, United States, 2/22/98. https://doi.org/10.1117/12.317085

@inproceedings{146d2e0edbc343f5ac6288faf55ae11b,

title = "Retrospective removal of k-space artifacts for echo-planar images: Noise reduction algorithms for spike suppression",

abstract = "High demands are made of the gradient systems of MRI scanners during acquisition of echo-planar images. These may occasionally lead to spurious noise added to the received data in the form of short duration, high intensity {"}spikes.{"} If these spikes are not caught prior to image formation, a severely degraded image may be formed. In the acquisition of functional MRI data this degradation may prohibit subsequent analysis of the data for identification of activated brain regions. We have devised several algorithms to isolate and remove these spurious spikes prior to the Fourier transform, and in one example show that subsequent fMRI analyses are possible. By contrast, the analysis is either impossible or produces differing results without this processing step.",

keywords = "Artifact, Echo-planar imaging, Functional magnetic resonance imaging, k-space, Suppression",

author = "McColl, {Roderick W} and Clarke, {Geoffrey D.} and Peshock, {Ronald M}",

year = "1998",

doi = "10.1117/12.317085",

language = "English (US)",

volume = "3336",

pages = "783--792",

editor = "{Dobbins III}, J.T. and J.M. Boone",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

note = "Medical Imaging 1998: Physics of Medical Imaging ; Conference date: 22-02-1998 Through 24-02-1998",

}

TY - GEN

T1 - Retrospective removal of k-space artifacts for echo-planar images

T2 - Medical Imaging 1998: Physics of Medical Imaging

AU - McColl, Roderick W

AU - Clarke, Geoffrey D.

AU - Peshock, Ronald M

PY - 1998

Y1 - 1998

N2 - High demands are made of the gradient systems of MRI scanners during acquisition of echo-planar images. These may occasionally lead to spurious noise added to the received data in the form of short duration, high intensity "spikes." If these spikes are not caught prior to image formation, a severely degraded image may be formed. In the acquisition of functional MRI data this degradation may prohibit subsequent analysis of the data for identification of activated brain regions. We have devised several algorithms to isolate and remove these spurious spikes prior to the Fourier transform, and in one example show that subsequent fMRI analyses are possible. By contrast, the analysis is either impossible or produces differing results without this processing step.

AB - High demands are made of the gradient systems of MRI scanners during acquisition of echo-planar images. These may occasionally lead to spurious noise added to the received data in the form of short duration, high intensity "spikes." If these spikes are not caught prior to image formation, a severely degraded image may be formed. In the acquisition of functional MRI data this degradation may prohibit subsequent analysis of the data for identification of activated brain regions. We have devised several algorithms to isolate and remove these spurious spikes prior to the Fourier transform, and in one example show that subsequent fMRI analyses are possible. By contrast, the analysis is either impossible or produces differing results without this processing step.

KW - Artifact

KW - Echo-planar imaging

KW - Functional magnetic resonance imaging

KW - k-space

KW - Suppression

UR - http://www.scopus.com/inward/record.url?scp=0032401660&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032401660&partnerID=8YFLogxK

U2 - 10.1117/12.317085

DO - 10.1117/12.317085

M3 - Conference contribution

AN - SCOPUS:0032401660

VL - 3336

SP - 783

EP - 792

BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Dobbins III, J.T.

A2 - Boone, J.M.

Y2 - 22 February 1998 through 24 February 1998

ER -

Retrospective removal of k-space artifacts for echo-planar images: Noise reduction algorithms for spike suppression

Abstract

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this