In this work, a novel design fiber optic force sensor with increased resolution thru Titanium coating is fabricated using Fabry-Pérot Interferometry (FPI) method and integrated into a biopsy needle to be used in interventional biopsy operations under MRI. The FPI based force sensor with improved resolution is tested via benchtop experiments after integrating into a MRI compatible biopsy needle. Sensor’s penetration detection, tissue characterization and differentiation capabilities are tested using different types of tissues. Overall system performance is tested via in vitro experiments under MRI using a commercial prostate phantom with leisons.
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