Acoustic noise and functional magnetic resonance imaging: Current strategies and future prospects

被引:137
作者
Amaro, E
Williams, SCR
Shergill, SS
Fu, CHY
MacSweeney, M
Picchioni, MM
Brammer, MJ
McGuire, PK
机构
[1] Kings Coll London, Inst Psychiat, Dept Psychol Med, London SE5 8AF, England
[2] Univ Sao Paulo, Fac Med, Inst Radiol, Sao Paulo, Brazil
关键词
task design; auditory cortex; acoustic noise; gradient noise; functional magnetic resonance imaging;
D O I
10.1002/jmri.10186
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
Functional magnetic resonance imaging (fMRI) has become the method of choice for studying the neural correlates of cognitive tasks. Nevertheless, the scanner produces acoustic noise during the image acquisition process, which is a problem in the study of auditory pathway and language generally. The scanner acoustic noise not only produces activation in brain regions involved in auditory processing but also interferes with the stimulus presentation. Several strategies can be used to address this problem, including modifications of hardware and software. Although reduction of the source of the acoustic noise would be ideal, substantial hardware modifications to the current base of installed MRI systems would be required. Therefore, the most common strategy employed to minimize the problem involves software modifications. In this work we consider three main types of acquisitions: compressed, partially silent, and silent. For each implementation, paradigms using block and event related designs are assessed. We also provide new data, using a silent event related (SER) design, which demonstrate higher blood oxygen level-dependent (BOLD) response to a simple auditory cue when compared to a conventional image acquisition.
引用
收藏
页码:497 / 510
页数:14
相关论文
共 153 条
[1]   The variability of human, BOLD hemodynamic responses [J].
Aguirre, GK ;
Zarahn, E ;
D'Esposito, M .
NEUROIMAGE, 1998, 8 (04) :360-369
[2]  
Amaro E, 2001, RADIOLOGY, V221, P137
[3]  
AMARO E, 1999, NEUROIMAGE, V5, pS331
[4]  
Anderson SJ, 2000, ZOO BIOL, V19, P1, DOI 10.1002/(SICI)1098-2361(2000)19:1&lt
[5]  
1::AID-ZOO1&gt
[6]  
3.0.CO
[7]  
2-F
[8]  
Bandettini PA, 2000, MAGNET RESON MED, V43, P540, DOI 10.1002/(SICI)1522-2594(200004)43:4<540::AID-MRM8>3.0.CO
[9]  
2-R
[10]   Functional MRI of brain activation induced by scanner acoustic noise [J].
Bandettini, PA ;
Jesmanowicz, A ;
Van Kylen, J ;
Birn, RM ;
Hyde, JS .
MAGNETIC RESONANCE IN MEDICINE, 1998, 39 (03) :410-416