A Superconducting Magnet for Intravascular Navigation.

摘要

A relatively compact superconducting solenoid has been designed for use with magnetically guided catheters. The on-axis magnetic field gradient generated by this solenoid will be 680Oe/cm at a distance of 10cm from the magnet enclosure. This gradient is 70% greater than the value required for reliable medical application in human patients. The on-axis field strength at 10cm will be about 4800Oe. The magnet will be mounted with a system of rotating and linear bearings to allow complete freedom of choice of orientation of the magnetic field and gradient with respect to the patient's head. Liquid helium will be supplied continuously through a flexible transfer line.