Determination of appropriate RF blocking impedance for MRI surface coils and arrays

Armen Kocharian; Phillip J. Rossman; Thomas C. Hulshizer; Joel P. Felmlee; Stephen J. Riederer

doi:10.1016/S1352-8661(00)00071-5

Determination of appropriate RF blocking impedance for MRI surface coils and arrays

Armen Kocharian, Phillip J. Rossman, Thomas C. Hulshizer, Joel P. Felmlee, Stephen J. Riederer

Department of Radiology

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

6 Scopus citations

Abstract

Surface and phased array receiving coils in MRI typically require that RF excitation be accomplished using the body coil. This process requires that the receiving coils contain blocking circuitry to increase the overall circuit impedance during RF excitation and withstand the electromotive force induced by the applied electromagnetic field. The aim of this study was to determine the optimal impedance range required during RF excitation based on an assessment of image quality. The experimental results are fit by an exponential model and establish criteria that can be applied for general receiver coil design. (C) 2000 Elsevier Science B.V.

Original language	English (US)
Pages (from-to)	80-83
Number of pages	4
Journal	Magnetic Resonance Materials in Physics, Biology and Medicine
Volume	10
Issue number	2
DOIs	https://doi.org/10.1016/S1352-8661(00)00071-5
State	Published - Jun 2000

Keywords

Blocking circuit
MRI
Surface coil

ASJC Scopus subject areas

Biophysics
Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging

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10.1016/S1352-8661(00)00071-5

Cite this

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title = "Determination of appropriate RF blocking impedance for MRI surface coils and arrays",

abstract = "Surface and phased array receiving coils in MRI typically require that RF excitation be accomplished using the body coil. This process requires that the receiving coils contain blocking circuitry to increase the overall circuit impedance during RF excitation and withstand the electromotive force induced by the applied electromagnetic field. The aim of this study was to determine the optimal impedance range required during RF excitation based on an assessment of image quality. The experimental results are fit by an exponential model and establish criteria that can be applied for general receiver coil design. (C) 2000 Elsevier Science B.V.",

keywords = "Blocking circuit, MRI, Surface coil",

author = "Armen Kocharian and Rossman, {Phillip J.} and Hulshizer, {Thomas C.} and Felmlee, {Joel P.} and Riederer, {Stephen J.}",

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AU - Rossman, Phillip J.

AU - Hulshizer, Thomas C.

AU - Felmlee, Joel P.

AU - Riederer, Stephen J.

PY - 2000/6

Y1 - 2000/6

N2 - Surface and phased array receiving coils in MRI typically require that RF excitation be accomplished using the body coil. This process requires that the receiving coils contain blocking circuitry to increase the overall circuit impedance during RF excitation and withstand the electromotive force induced by the applied electromagnetic field. The aim of this study was to determine the optimal impedance range required during RF excitation based on an assessment of image quality. The experimental results are fit by an exponential model and establish criteria that can be applied for general receiver coil design. (C) 2000 Elsevier Science B.V.

AB - Surface and phased array receiving coils in MRI typically require that RF excitation be accomplished using the body coil. This process requires that the receiving coils contain blocking circuitry to increase the overall circuit impedance during RF excitation and withstand the electromotive force induced by the applied electromagnetic field. The aim of this study was to determine the optimal impedance range required during RF excitation based on an assessment of image quality. The experimental results are fit by an exponential model and establish criteria that can be applied for general receiver coil design. (C) 2000 Elsevier Science B.V.

KW - Blocking circuit

KW - MRI

KW - Surface coil

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Determination of appropriate RF blocking impedance for MRI surface coils and arrays

Abstract

Keywords

ASJC Scopus subject areas

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