Fig. 7: Controllable navigation of LMMSR in an ex vivo porcine stomach under the monitoring of X-ray imaging system.

A The setup for LMMSR control experiment, which consists of an ex vivo porcine stomach, magnetic control system (a permanent magnet integrated on robotic arm), and imaging system (X-ray source and detector, and optical camera). B Illustration of magnetic navigation of LMMSR with a robotic magnet. C X-ray image of an ex vivo pristine stomach filled with simulated gastric acid, with the inset showing the optical image. D Sequential X-ray images and corresponding video images for remote magnetic manipulation of LMMSR.