Computer Vision News 22 Optimal design of the magnetic tentacles. Analysis of patient-specific design over main branches of the bronchi. a Evaluation of general lumina in the left (Case 1) and right (Case 2) bronchi. b Example tentacle magnetization profile for optimal navigation in the principal sub-segmental branches. c Field and field gradient actuation (blue arrows) for the main cases (1 and 2) in the four insertion steps (1)–(4). d The lung geometry is colored according to the percentage mean spatial error at the optimization phase; color is scaled between 0 (blue) and 10% (red) error. current, but they’re smaller. You can achieve the same force on a catheter with a small permanent magnet or a large coil. We like permanent magnets because they’re compact and easy to integrate into an operating room, but they’re also more challenging to control!” Pietro tells us he often monitors work on magnetic field modeling by Bradley Nelson’s group at ETH Zurich, whose research focuses on microrobotics and nanorobotics. STORM Lab uses the dipole model to predict Robotics in Medicine Lab
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