Electrodynamic headphones and woofers for application in magnetic resonance imaging scanners

被引：98

作者：

Baumgart, F ^{[1
]}

Kaulisch, T ^{[1
]}

Tempelmann, C ^{[1
]}

Gaschler-Markefski, B ^{[1
]}

Tegeler, C ^{[1
]}

Schindler, F ^{[1
]}

Stiller, D ^{[1
]}

Scheich, H ^{[1
]}

机构：

[1] Leibniz Inst Neurobiol IfN, Magdeburg, Germany

来源：

MEDICAL PHYSICS | 1998年 / 25卷 / 10期

关键词：

MRI; loudspeaker; active noise-control;

D O I：

10.1118/1.598368

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Electrodynamic speakers compatible with (functional) magnetic resonance imaging (MRI) are described. The speakers magnets are removed, their function is replaced by the scanner's magnetic field, resulting in an uncommon but efficient operation. The method can be used with headphones as well as woofers. Functional MRI is not associated with any known biological risks, but as a method for visualization of task-specific activation of brain regions it is undesirably noisy. Thus, it requires both noise protection and efficient sound transmission systems for delivering acoustic stimuli to subjects. Woofers could possibly be used in active noise-control systems. The speakers described in this paper can be used for either task. (C) 1998 American Association of Physicists in Medicine. [S0094-2405(98)00610-5].

引用

页码：2068 / 2070

页数：3