A Structure Design Method for Reduction of MRI Acoustic Noise
Joint Authors
Nan, Jiaofen
Zong, Nannan
Chen, Qiqiang
Zhang, Liangliang
Zheng, Qian
Xia, Yongquan
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-06
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The acoustic problem of the split gradient coil is one challenge in a Magnetic Resonance Imaging and Linear Accelerator (MRI-LINAC) system.
In this paper, we aimed to develop a scheme to reduce the acoustic noise of the split gradient coil.
First, a split gradient assembly with an asymmetric configuration was designed to avoid vibration in same resonant modes for the two assembly cylinders.
Next, the outer ends of the split main magnet were constructed using horn structures, which can distribute the acoustic field away from patient region.
Finally, a finite element method (FEM) was used to quantitatively evaluate the effectiveness of the above acoustic noise reduction scheme.
Simulation results found that the noise could be maximally reduced by 6.9 dB and 5.6 dB inside and outside the central gap of the split MRI system, respectively, by increasing the length of one gradient assembly cylinder by 20 cm.
The optimized horn length was observed to be 55 cm, which could reduce noise by up to 7.4 dB and 5.4 dB inside and outside the central gap, respectively.
The proposed design could effectively reduce the acoustic noise without any influence on the application of other noise reduction methods.
American Psychological Association (APA)
Nan, Jiaofen& Zong, Nannan& Chen, Qiqiang& Zhang, Liangliang& Zheng, Qian& Xia, Yongquan. 2017. A Structure Design Method for Reduction of MRI Acoustic Noise. Computational and Mathematical Methods in Medicine،Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1142238
Modern Language Association (MLA)
Nan, Jiaofen…[et al.]. A Structure Design Method for Reduction of MRI Acoustic Noise. Computational and Mathematical Methods in Medicine No. 2017 (2017), pp.1-12.
https://search.emarefa.net/detail/BIM-1142238
American Medical Association (AMA)
Nan, Jiaofen& Zong, Nannan& Chen, Qiqiang& Zhang, Liangliang& Zheng, Qian& Xia, Yongquan. A Structure Design Method for Reduction of MRI Acoustic Noise. Computational and Mathematical Methods in Medicine. 2017. Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1142238
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1142238