Comparison of an 8-hannel and a 32-channel coil for high-resolution fMRI at 7 T

Roy Salomon; Jana Darulova; Mayur Narsude; Wietske Van Der Zwaag

doi:10.1007/s10548-013-0298-6

Comparison of an 8-hannel and a 32-channel coil for high-resolution fMRI at 7 T

Roy Salomon
, Jana Darulova
, Mayur Narsude
, Wietske Van Der Zwaag

Swiss Federal Institute of Technology Lausanne

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

22 Scopus citations

Abstract

Multi-channel receive array rf-coils have become widely available for fMRI. The improved SNR and possibility of acquisition acceleration through parallel imaging are especially beneficial for high-resolution studies. In this study, an 8-channel and a 32-channel coil were compared in a high-resolution finger tapping fMRI experiment at 7 T. 1.3 mm³ resolution data acquired with the 32-channel coil provided higher image- and temporal SNR and yielded higher BOLD sensitivity measures, notably higher cluster sizes in MI/SI and increased z-scores, though not an increase in percent signal change. For sub-millimeter resolution fMRI data acquired with the 32-channel coil smaller clusters were found, though percent signal changes were significantly larger, due to reduced partial volume effects. These results demonstrate the utility of the use of an array coil with a large number of receive elements for high-resolution fMRI at ultra-high field.

Original language	English
Pages (from-to)	209-212
Number of pages	4
Journal	Brain Topography
Volume	27
Issue number	2
DOIs	https://doi.org/10.1007/s10548-013-0298-6
State	Published - Mar 2014
Externally published	Yes

Bibliographical note

Funding Information:
Acknowledgments This work was supported by the Centre d’Imagerie BioMédicale (CIBM) of the UNIL, UNIGE, HUG, CHUV, EPFL and the Leenaards and Jeantet Foundations. R.S. was supported by the National Center of Competence in Research (NCCR) ‘‘SYNAPSY—The Synaptic Bases of Mental Diseases’’ financed by the Swiss National Science Foundation (No 51AU40_125759).

Funding

Acknowledgments This work was supported by the Centre d’Imagerie BioMédicale (CIBM) of the UNIL, UNIGE, HUG, CHUV, EPFL and the Leenaards and Jeantet Foundations. R.S. was supported by the National Center of Competence in Research (NCCR) ‘‘SYNAPSY—The Synaptic Bases of Mental Diseases’’ financed by the Swiss National Science Foundation (No 51AU40_125759).

Funders	Funder number
Centre d’Imagerie BioMédicale
Leenaards and Jeantet Foundations
École Polytechnique Fédérale de Lausanne
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	51AU40_125759
Université de Genève
Université de Lausanne
National Center of Competence in Research Quantum Science and Technology

Keywords

7 T
BOLD sensitivity
Coil comparison
Sensory-motor cortex
fMRI

Access to Document

10.1007/s10548-013-0298-6

Cite this

@article{c616c651a80a4b9fa6e59c7043f1dd4a,

title = "Comparison of an 8-hannel and a 32-channel coil for high-resolution fMRI at 7 T",

abstract = "Multi-channel receive array rf-coils have become widely available for fMRI. The improved SNR and possibility of acquisition acceleration through parallel imaging are especially beneficial for high-resolution studies. In this study, an 8-channel and a 32-channel coil were compared in a high-resolution finger tapping fMRI experiment at 7 T. 1.3 mm3 resolution data acquired with the 32-channel coil provided higher image- and temporal SNR and yielded higher BOLD sensitivity measures, notably higher cluster sizes in MI/SI and increased z-scores, though not an increase in percent signal change. For sub-millimeter resolution fMRI data acquired with the 32-channel coil smaller clusters were found, though percent signal changes were significantly larger, due to reduced partial volume effects. These results demonstrate the utility of the use of an array coil with a large number of receive elements for high-resolution fMRI at ultra-high field.",

keywords = "7 T, BOLD sensitivity, Coil comparison, Sensory-motor cortex, fMRI",

author = "Roy Salomon and Jana Darulova and Mayur Narsude and \{Van Der Zwaag\}, Wietske",

note = "Funding Information: Acknowledgments This work was supported by the Centre d{\textquoteright}Imagerie BioM{\'e}dicale (CIBM) of the UNIL, UNIGE, HUG, CHUV, EPFL and the Leenaards and Jeantet Foundations. R.S. was supported by the National Center of Competence in Research (NCCR) {\textquoteleft}{\textquoteleft}SYNAPSY—The Synaptic Bases of Mental Diseases{\textquoteright}{\textquoteright} financed by the Swiss National Science Foundation (No 51AU40\_125759).",

year = "2014",

month = mar,

doi = "10.1007/s10548-013-0298-6",

language = "אנגלית",

volume = "27",

pages = "209--212",

journal = "Brain Topography",

issn = "0896-0267",

publisher = "Springer",

number = "2",

}

TY - JOUR

T1 - Comparison of an 8-hannel and a 32-channel coil for high-resolution fMRI at 7 T

AU - Salomon, Roy

AU - Darulova, Jana

AU - Narsude, Mayur

AU - Van Der Zwaag, Wietske

N1 - Funding Information: Acknowledgments This work was supported by the Centre d’Imagerie BioMédicale (CIBM) of the UNIL, UNIGE, HUG, CHUV, EPFL and the Leenaards and Jeantet Foundations. R.S. was supported by the National Center of Competence in Research (NCCR) ‘‘SYNAPSY—The Synaptic Bases of Mental Diseases’’ financed by the Swiss National Science Foundation (No 51AU40_125759).

PY - 2014/3

Y1 - 2014/3

N2 - Multi-channel receive array rf-coils have become widely available for fMRI. The improved SNR and possibility of acquisition acceleration through parallel imaging are especially beneficial for high-resolution studies. In this study, an 8-channel and a 32-channel coil were compared in a high-resolution finger tapping fMRI experiment at 7 T. 1.3 mm3 resolution data acquired with the 32-channel coil provided higher image- and temporal SNR and yielded higher BOLD sensitivity measures, notably higher cluster sizes in MI/SI and increased z-scores, though not an increase in percent signal change. For sub-millimeter resolution fMRI data acquired with the 32-channel coil smaller clusters were found, though percent signal changes were significantly larger, due to reduced partial volume effects. These results demonstrate the utility of the use of an array coil with a large number of receive elements for high-resolution fMRI at ultra-high field.

AB - Multi-channel receive array rf-coils have become widely available for fMRI. The improved SNR and possibility of acquisition acceleration through parallel imaging are especially beneficial for high-resolution studies. In this study, an 8-channel and a 32-channel coil were compared in a high-resolution finger tapping fMRI experiment at 7 T. 1.3 mm3 resolution data acquired with the 32-channel coil provided higher image- and temporal SNR and yielded higher BOLD sensitivity measures, notably higher cluster sizes in MI/SI and increased z-scores, though not an increase in percent signal change. For sub-millimeter resolution fMRI data acquired with the 32-channel coil smaller clusters were found, though percent signal changes were significantly larger, due to reduced partial volume effects. These results demonstrate the utility of the use of an array coil with a large number of receive elements for high-resolution fMRI at ultra-high field.

KW - 7 T

KW - BOLD sensitivity

KW - Coil comparison

KW - Sensory-motor cortex

KW - fMRI

UR - https://www.scopus.com/pages/publications/84894433903

U2 - 10.1007/s10548-013-0298-6

DO - 10.1007/s10548-013-0298-6

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

C2 - 23749257

SN - 0896-0267

VL - 27

SP - 209

EP - 212

JO - Brain Topography

JF - Brain Topography

IS - 2

ER -

Comparison of an 8-hannel and a 32-channel coil for high-resolution fMRI at 7 T

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this