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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Neuroimage. 2014 Jan 10;91:129–137. doi: 10.1016/j.neuroimage.2013.12.061

Figure 1. Wireless active marker.

Figure 1

a) A flame-sealed 18 µL spherical NMR microsample bulb filled with doped water, a US one-cent coin (19.05 mm in diameter), and solenoidal wireless MR coil; b) the assembled wireless MR active marker.