Abstract #0645

The TMSMR 28 channel RF coil: whole head imaging for the 3-axis TMS multichannel system

Lucia Navarro de Lara^1,2, Jason Stockmann^1,2, Boris Keil³, Azma Mareyam¹, Mohammad Daneshzand^1,2, Larry Wald^1,2, and Aapo Nummenmaa^1,2

¹Martinos Center - MGH, Charlestown, MA, United States, ²Harvard Medical School, Boston, MA, United States, ³Institute of Medical Physics and Radiation Protection, Technische Hochschule Mittelhessen, Giessen, Germany

Synopsis

Multichannel Transcranial Magnetic Stimulation is an emerging technology for non-invasive stimulation of the human brain. Combining this technique with fMRI offers the unique benefits of studying the causal relationships between the cortical and subcortical nodes of large-scale brain networks. For this reason a whole head 28-channel RF coil array was developed to be integrated with the first 3-axis-TMS multichannel system. We have analyzed how the SNR of the constructed array changes when placing the stimulation units. Additionally, we compared the SNR/g-factor maps with commercial available 32/20-channel RF coils. The results show that the RF coil is performing as expected.

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