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. Author manuscript; available in PMC: 2010 Jul 12.
Published in final edited form as: Neurosurg Clin N Am. 2009 Apr;20(2):137–146. doi: 10.1016/j.nec.2009.04.002

Fig. 4.

Fig. 4

The PoleStar iMRI. The open-bore configuration PoleStar N-20, despite its low-field 0.15T magnet, has allowed many institutions to take advantage of iMRI without completely remodeling their operative suite to accommodate a larger, high-field stationary iMRI. The Polestar is compact enough to be stored in a shielded room (pictured on the right side of the figure) when not in use. If a smaller room cannot be dedicated to storage, an in-suite “hangar” can be set up to shield the magnet when not in use. (Courtesy of Medtronic Navigation, Louisville, CO; with permission.)