Research update on MEG sensing technology

The technology involved in MEG sensing, the weekly helium refills, and the materials building the MSR, make MEG a costly piece of equipment. Exciting recent developments however contribute to constant progress in cost-effectiveness, practicality and the future of MEG sensing science.

Active shielding solutions for instance are available commercially. They consist in picking-up the external magnetic fields from outside the MSR and compensate for their contribution to MEG sensors in real time. The immediate benefit is in MSRs of reduced size and weight and in consequence, price.

The depletion of the global stock of helium is a well-documented fact that concerns multiple technology fields, beyond MEG (MRI refrigeration, space rocket propulsion, state-of-the-art video and TV displays and yes, party balloons among others). The immediate consequence of this looming shortage is a steady price increase, hence growing operational costs for MEG. Though alternative helium resources may well not be exploited as of today, the future of biomagnetism is certainly in alternative sensing technologies. High-temperature magnetometers are being developed and are based on radically-different principles than the low-temperature physics of current MEG systems (Savukov & Romalis, 2005, Pannetier-Lecoeur et al.., 2009). SNR and sensitivity to the lower frequency range of the electromagnetic spectrum have long been issues with these emerging technologies, which were primarily designed for nuclear magnetic resonance measurements. It appears they now have considerably matured and are ready for MEG prototyping at a larger scale.

Froedtert & The Medical College of Wisconsin MEG Contact Information

Research investigators and clinical physicians are encouraged to contact us for further information on how to access our MEG Program and services.

  • Zhimin Li, PhD: Technical Manager
  • Jean Roccapalumba, CTRS, MBA: Program Manager

Mailing Address:

MEG Program
Department of Neurology
Medical College of Wisconsin
9200 W. Wisconsin Ave.
Milwaukee, WI 53226

MEG Program Site Map


If you are a physician and would like to inquire about or order a MEG study for your patients, please visit Froedtert Hospital MEG web pages for basic information about the procedure and/or contact Linda Allen, RN BSN, our Epilepsy Program Coordinator at (414) 805-3641 to refer your patient to our Program.

If you are a patient who is about to undergo an MEG procedure, please also visit Froedtert Hospital MEG web pages for useful information regarding the MEG routine.

Medical College of Wisconsin
8701 Watertown Plank Road
Milwaukee, WI 53226
(414) 955-8296
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Page Updated 11/25/2014
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