access icon free Deep brain stimulation lead design to reduce radio-frequency heating in MRI

Radio-frequency (RF) induced heating at the electrodes of the deep brain stimulation lead is a major concern when used in magnetic resonance imaging (MRI). A novel lead design is proposed to address this problem. By adopting a coil with non-uniform diameters, the maximal temperature rise measured in a standard phantom is reduced from 4.6 to 2.0°C, with an average reduction of 59%. The suppression of RF heating is probably achieved because of the alteration of the transmission line parameters of the lead by the novel design. The details of the design, experiment validation and discussion of the mechanisms are presented.

Inspec keywords: phantoms; brain; biomedical MRI

Other keywords: magnetic resonance imaging; RF heating; deep brain stimulation; electrodes; radiofrequency-induced heating; phantom; transmission line parameters; nonuniform diameters; MRI

Subjects: Biomedical magnetic resonance imaging and spectroscopy; Microwaves and other electromagnetic waves (medical uses); Patient diagnostic methods and instrumentation; Medical magnetic resonance imaging and spectroscopy; Biophysics of neurophysiological processes

References

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      • 3. Bronstein, J.M., Tagliati, M., Alterman, R.L., Lozano, A.M., Volkmann, J., Stefani, A., Horak, F.B., Okun, M.S., Foote, K.D., Krack, P., Pahwa, R., Henderson, J.M., Hariz, M.I., Bakay, R.A., Rezai, A., Marks, W.J., Moro, E., Vitek, J.L., Weaver, F.M., Gross, R.E., DeLong, M.R.: ‘Deep brain stimulation for parkinson disease: an expert consensus and review of key issues’, Arch. Neurol., 2011, 68, (2), pp. 165171.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2014.3482
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