Publications by authors named "Manuel Vonthron"
Study Design: Experimental in vivo study of the pressure exerted on the spine of a pig by a new cyclic anterior vertebral body tethering (AVBT) prototype.
Objectives: To evaluate the relationship between the tether tension and the pressures transmitted onto the vertebral end plates by a cyclic AVBT prototype. AVBT is a recent surgical technique for the treatment of pediatric scoliosis that compresses the convex side of the spine with a sustained tension, to modulate the growth to progressively correct the deformity over time.
Article Synopsis
- The study aimed to evaluate a magnetic guidewire's steering control for selective catheterization of various arteries in rabbits using a magnetic resonance imaging system.
- Catheterizations of the right renal, left renal, superior mesenteric, and iliac arteries were attempted, with successful navigation demonstrated using a magnetic bead at the guidewire's tip, despite challenges visualizing some arteries on MRA.
- Results indicated successful and reproducible catheterization of renal arteries, with no unintended access to side vessels when the guidewire was advanced using magnetic steering, highlighting the technique's potential for complex vascular procedures.
The development of minimally invasive surgical techniques using magnetism is expanding. Our research group is exploring catheter steering using the gradient field of a modified clinical Magnetic Resonance Imaging (MRI) system. This paper focuses on the upgrade of the MRI testing platform towards an integrated system allowing for in vitro and in vivo experiments.
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