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Research-grade needle-based HHOCT probes for intraoperative imaging. (A) 23-gauge side-viewing probe for imaging of breast cancer [103]. Three-dimensional optical scanning was achieved by rotating and retracting the probe during imaging. (B) 25-gauge forward-imaging probe for imaging during vitreoretinal surgery [105]. Transverse optical scanning was enabled by displacing the fiber tip using a customized coil-magnetic system.
