| 摘要 |
An imaging and catheter steering assembly comprising a magnetic field generating assembly ( 1 - 6 ) operable in a first mode to generate a first magnetic field in a working volume ( 7 ) located outside the assembly, the first magnetic field being suitable for use in a catheter, steering procedure. In a second mode the assembly ( 1 - 6 ) generates a second, static magnetic field in the working volume ( 7 ) suitable for conducting a magnetic resonance imaging process (MRI), the second magnetic field being more uniform in the working volume than the first magnetic field. A catheter ( 67 ) has a magnetic seed attached whose orientation, and hence the steering direction of the catheter, is determined by interaction with the first magnetic field.
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