Keywords: Low-Field MRI, Prostate
Motivation: Needle tracking in MR is essential for guiding prostate biopsies and interventions but the quality and accuracy are limited by SNR and low resolution on a 65mT scanner.
Goal(s): To develop a protocol for fast needle localization for a low field, single-sided scanner.
Approach: We designed a receive coil mounted on an interventional needle and a fast, radial, cross-term spatiotemporal encoding (xSPEN) scheme for localization.
Results: Localization of prostate biopsy needles can be achieved with a sub-2mm average error in less than one minute on an ultra-low field scanner.
Impact: The method can be further adapted to guide additional clinical procedures.
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