Artifact Suppression in Imaging of Myocardial Infarction Using B 1-Weighted Phased-Array Combined Phase-Sensitive Inversion Recovery

Peter Kellman; Christopher K. Dyke; Anthony H. Aletras; Elliot R. McVeigh; Andrew E. Arai

doi:10.1002/mrm.10689

Artifact Suppression in Imaging of Myocardial Infarction Using B 1-Weighted Phased-Array Combined Phase-Sensitive Inversion Recovery

Peter Kellman, Christopher K. Dyke, Anthony H. Aletras, Elliot R. McVeigh, Andrew E. Arai

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Regions of the body with long T₁, such as cerebrospinal fluid (CSF), may create ghost artifacts on gadolinium-hyperenhanced images of myocardial infarction when inversion recovery (IR) sequences are used with a segmented acquisition. Oscillations in the transient approach to steady state for regions with long T₁ may cause ghosts, with the number of ghosts being equal to the number of segments. B₁-weighted phased-array combining provides an inherent degree of ghost artifact suppression because the ghost artifact is weighted less than the desired signal intensity by the coil sensitivity profiles. Example images are shown that illustrate the suppression of CSF ghost artifacts by the use of B₁-weighted phased-array combining of multiple receiver coils.

Original language	English (US)
Pages (from-to)	408-412
Number of pages	5
Journal	Magnetic Resonance in Medicine
Volume	51
Issue number	2
DOIs	https://doi.org/10.1002/mrm.10689
State	Published - Feb 2004
Externally published	Yes

Keywords

Artifact
Cerebrospinal fluid (CSF)
Delayed hyperenhancement
Heart
MRI
Myocardial infarction
Phase-sensitive
Phased array

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging
Radiological and Ultrasound Technology

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10.1002/mrm.10689

Cite this

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title = "Artifact Suppression in Imaging of Myocardial Infarction Using B 1-Weighted Phased-Array Combined Phase-Sensitive Inversion Recovery",

abstract = "Regions of the body with long T1, such as cerebrospinal fluid (CSF), may create ghost artifacts on gadolinium-hyperenhanced images of myocardial infarction when inversion recovery (IR) sequences are used with a segmented acquisition. Oscillations in the transient approach to steady state for regions with long T1 may cause ghosts, with the number of ghosts being equal to the number of segments. B1-weighted phased-array combining provides an inherent degree of ghost artifact suppression because the ghost artifact is weighted less than the desired signal intensity by the coil sensitivity profiles. Example images are shown that illustrate the suppression of CSF ghost artifacts by the use of B1-weighted phased-array combining of multiple receiver coils.",

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AU - Aletras, Anthony H.

AU - McVeigh, Elliot R.

AU - Arai, Andrew E.

PY - 2004/2

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N2 - Regions of the body with long T1, such as cerebrospinal fluid (CSF), may create ghost artifacts on gadolinium-hyperenhanced images of myocardial infarction when inversion recovery (IR) sequences are used with a segmented acquisition. Oscillations in the transient approach to steady state for regions with long T1 may cause ghosts, with the number of ghosts being equal to the number of segments. B1-weighted phased-array combining provides an inherent degree of ghost artifact suppression because the ghost artifact is weighted less than the desired signal intensity by the coil sensitivity profiles. Example images are shown that illustrate the suppression of CSF ghost artifacts by the use of B1-weighted phased-array combining of multiple receiver coils.

AB - Regions of the body with long T1, such as cerebrospinal fluid (CSF), may create ghost artifacts on gadolinium-hyperenhanced images of myocardial infarction when inversion recovery (IR) sequences are used with a segmented acquisition. Oscillations in the transient approach to steady state for regions with long T1 may cause ghosts, with the number of ghosts being equal to the number of segments. B1-weighted phased-array combining provides an inherent degree of ghost artifact suppression because the ghost artifact is weighted less than the desired signal intensity by the coil sensitivity profiles. Example images are shown that illustrate the suppression of CSF ghost artifacts by the use of B1-weighted phased-array combining of multiple receiver coils.

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Artifact Suppression in Imaging of Myocardial Infarction Using B 1-Weighted Phased-Array Combined Phase-Sensitive Inversion Recovery

Abstract

Keywords

ASJC Scopus subject areas

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