You are viewing a javascript disabled version of the site. Please enable Javascript for this site to function properly.
Go to headerGo to navigationGo to searchGo to contentsGo to footer
In content section. Select this link to jump to navigation

A radiation emission shielding method for high intensity focus ultrasound probes

Issue title: Frontiers in Biomedical Engineering and Biotechnology – Proceedings of the 4th International Conference on Biomedical Engineering and Biotechnology, 18–21 August 2015, Shanghai, China

Guest editors: Feng Liu, Dong-Hoon Lee, Ricardo Lagoa and Sandeep Kumar

Article type: Research Article

Authors: Wu, Haoa; b | Shen, Guofenga; b; * | Chen, Yazhua; b

Affiliations: [a] Biomedical Instrument Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R. China | [b] Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, 200030, P.R. China

Correspondence: [*] Address for correspondence: Guofeng Shen. Room 123, No. 3 Teaching Building (Med-X Institute) Shanghai Jiao Tong University, No. 1954, Huashan Road, Xuhui District, Shanghai 200030, P.R. China. Tel.: +86 21 62933209; Fax: +86 21 62932156; E-mail: [email protected].

Keywords: High intensity focused ultrasound, electromagnetic compatibility, radiated emission, radio frequency shielding

DOI: 10.3233/BME-151390

Journal: Bio-Medical Materials and Engineering, vol. 26, no. s1, pp. S959-S966, 2015

Published: 2015
Get PDF open access

Electromagnetic compatibility (EMC) is a key issue in the design and development of safe and effective medical instruments. The treatment probes of high intensity focused ultrasound (HIFU) systems not only receive and transmit electromagnetic waves, but also radiate ultrasound waves, resulting in electromagnetic coupling. In this paper, an electromagnetic shielding method involving the enclosure of the probe in a copper wire mesh was introduced. First, sound pressure distribution simulations and measurements were performed using a hydrophone in order to evaluate the effects of the wire mesh on the acoustic performance of the HIFU system. The results indicated that the wire mesh did not disturb the normalized sound pressure field. In addition, the attenuation of the maximum pressure in the focal plane was equal to 6.2%. Then, the electronic emission level was tested in a chamber. After the implementation of the wire mesh, the 10-100 MHz frequency band radiation was suppressed, and the HIFU system satisfied the national EMC standards.

Show more