A Structure Design Method for Reduction of MRI Acoustic Noise

المؤلفون المشاركون

Nan, Jiaofen
Zong, Nannan
Chen, Qiqiang
Zhang, Liangliang
Zheng, Qian
Xia, Yongquan

المصدر

Computational and Mathematical Methods in Medicine

العدد

المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-12، 12ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2017-11-06

دولة النشر

مصر

عدد الصفحات

12

التخصصات الرئيسية

الطب البشري

الملخص 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.

نمط استشهاد جمعية علماء النفس الأمريكية (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

نمط استشهاد الجمعية الأمريكية للغات الحديثة (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

نمط استشهاد الجمعية الطبية الأمريكية (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

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1142238