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A 20-gauge active needle design with thin-film printed circuitry for interventional MRI at 0.55T.

Dursun Korel YildirimChristopher BruceDogangun UzunToby RogersKendall O'BrienRajiv RamasawmyAdrienne E Campbell-WashburnDaniel A HerzkaRobert J LedermanOzgur Kocaturk
Published in: Magnetic resonance in medicine (2021)
The active needle prototype with conductive ink printed antenna provides distinct device visibility under MRI. Variations on the needle surface are mitigated compared to use of a 44 American Wire Gauge copper wire. RF-induced heating tests support device RF safety under MRI. The proposed method enables fabrication of small diameter active interventional MRI devices having complex geometries, something previously difficult using conventional methods.
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