A 16 channel time-multiplexed head coil array for functional MR imaging

Author

Wright, Steven M. ; Porter, Jay R. ; Reykowski, Arne ; Finkenstaedt, Michael ; Naul, L. Gill

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

1

fYear

1995

fDate

20-25 Sep 1995

Firstpage

473

Abstract

Functional magnetic resonance imaging (fMRI) of the brain relies on small signal differences caused by changes in regional blood volume during task activation. At commonly used field strengths the signal differences are extremely small, but useable. This paper presents a time-multiplexed sixteen channel surface coil array for fMRI. The new coil obtains a factor of two or more improvement in the signal-to-noise ratio (SNR) as compared to the standard head coil in the visual and motor cortex. Additionally, the SNR is nearly as high as the standard coil in the center of the brain

Keywords

arrays; biomedical NMR; biomedical equipment; brain; coils; 16 channel time-multiplexed head coil array; brain center; brain imaging; functional magnetic resonance imaging; medical diagnostic imaging; medical instrumentation; motor cortex; regional blood volume changes; signal differences; signal-to-noise ratio; standard head coil; task activation; visual cortex; Blood; Coils; Hospitals; Magnetic heads; Magnetic noise; Magnetic resonance imaging; Manufacturing; Preamplifiers; Signal to noise ratio; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.575206

Filename

575206