Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation
MRI coil parameters can be estimated via simulation using an equivalent RLC circuit to investigate coil performance. The Spice Opus simulator was used to simulate the loss return coefficients of a circular-shaped coil and a petal resonator surface (PERES) coil via equivalent (RLC) circuit. Simulated coefficient spectra were obtained and compared with experimentally-acquired spectra generated by both coils. From these spectra, resonant modes and quality factors of both coil prototypes were computed at 64 MHz and compared. Impedance and resonant frequency of the 8 petal-PERES coil design were computed and compared against those obtained with the circuit simulation. PERES coil design produced an impedance value of 54 Ω, and an experimental resonant frequency differing by less than 1% from that predicted by the circuit simulator. The quality factor of the coil prototype differs by only 8% from that obtained with the simulation method. Due to construction imperfections in the coil design, it showed a drop of 8.84 dB in attenuation compared with the simulation results obtained with the aid of an equivalent circuit. This scheme may serve as an alternative to the trial-and-error method usually used to develop dedicated RF coils for magnetic resonance imaging.
Main Authors: | , , , , |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedad Mexicana de Física
2006
|
Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0035-001X2006000500002 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:scielo:S0035-001X2006000500002 |
---|---|
record_format |
ojs |
spelling |
oai:scielo:S0035-001X20060005000022008-08-01Performance of a petal resonator surface (PERES) coil via equivalent circuit simulationRodríguez,A.O.Solís,S.E.López,M.A.Mantaras,M.C.Hidalgo,S.S. Magnetic resonance imaging RF coil simulation equivalent circuit quality factor resonator coil RLC MRI coil parameters can be estimated via simulation using an equivalent RLC circuit to investigate coil performance. The Spice Opus simulator was used to simulate the loss return coefficients of a circular-shaped coil and a petal resonator surface (PERES) coil via equivalent (RLC) circuit. Simulated coefficient spectra were obtained and compared with experimentally-acquired spectra generated by both coils. From these spectra, resonant modes and quality factors of both coil prototypes were computed at 64 MHz and compared. Impedance and resonant frequency of the 8 petal-PERES coil design were computed and compared against those obtained with the circuit simulation. PERES coil design produced an impedance value of 54 Ω, and an experimental resonant frequency differing by less than 1% from that predicted by the circuit simulator. The quality factor of the coil prototype differs by only 8% from that obtained with the simulation method. Due to construction imperfections in the coil design, it showed a drop of 8.84 dB in attenuation compared with the simulation results obtained with the aid of an equivalent circuit. This scheme may serve as an alternative to the trial-and-error method usually used to develop dedicated RF coils for magnetic resonance imaging.info:eu-repo/semantics/openAccessSociedad Mexicana de FísicaRevista mexicana de física v.52 n.5 20062006-10-01info:eu-repo/semantics/articletext/htmlhttp://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0035-001X2006000500002en |
institution |
SCIELO |
collection |
OJS |
country |
México |
countrycode |
MX |
component |
Revista |
access |
En linea |
databasecode |
rev-scielo-mx |
tag |
revista |
region |
America del Norte |
libraryname |
SciELO |
language |
English |
format |
Digital |
author |
Rodríguez,A.O. Solís,S.E. López,M.A. Mantaras,M.C. Hidalgo,S.S. |
spellingShingle |
Rodríguez,A.O. Solís,S.E. López,M.A. Mantaras,M.C. Hidalgo,S.S. Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation |
author_facet |
Rodríguez,A.O. Solís,S.E. López,M.A. Mantaras,M.C. Hidalgo,S.S. |
author_sort |
Rodríguez,A.O. |
title |
Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation |
title_short |
Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation |
title_full |
Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation |
title_fullStr |
Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation |
title_full_unstemmed |
Performance of a petal resonator surface (PERES) coil via equivalent circuit simulation |
title_sort |
performance of a petal resonator surface (peres) coil via equivalent circuit simulation |
description |
MRI coil parameters can be estimated via simulation using an equivalent RLC circuit to investigate coil performance. The Spice Opus simulator was used to simulate the loss return coefficients of a circular-shaped coil and a petal resonator surface (PERES) coil via equivalent (RLC) circuit. Simulated coefficient spectra were obtained and compared with experimentally-acquired spectra generated by both coils. From these spectra, resonant modes and quality factors of both coil prototypes were computed at 64 MHz and compared. Impedance and resonant frequency of the 8 petal-PERES coil design were computed and compared against those obtained with the circuit simulation. PERES coil design produced an impedance value of 54 Ω, and an experimental resonant frequency differing by less than 1% from that predicted by the circuit simulator. The quality factor of the coil prototype differs by only 8% from that obtained with the simulation method. Due to construction imperfections in the coil design, it showed a drop of 8.84 dB in attenuation compared with the simulation results obtained with the aid of an equivalent circuit. This scheme may serve as an alternative to the trial-and-error method usually used to develop dedicated RF coils for magnetic resonance imaging. |
publisher |
Sociedad Mexicana de Física |
publishDate |
2006 |
url |
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0035-001X2006000500002 |
work_keys_str_mv |
AT rodriguezao performanceofapetalresonatorsurfaceperescoilviaequivalentcircuitsimulation AT solisse performanceofapetalresonatorsurfaceperescoilviaequivalentcircuitsimulation AT lopezma performanceofapetalresonatorsurfaceperescoilviaequivalentcircuitsimulation AT mantarasmc performanceofapetalresonatorsurfaceperescoilviaequivalentcircuitsimulation AT hidalgoss performanceofapetalresonatorsurfaceperescoilviaequivalentcircuitsimulation |
_version_ |
1756219857774313472 |