Frustoconical magnet for magnetic resonance imaging
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United States of America Patent
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Apr 26, 1994
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N/A
app pub date -
Sep 8, 1992
filing date -
Sep 8, 1992
priority date (Note) -
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Abstract
An open magnet having a frustoconical shaped inner bore is provided for MR imaging. The magnet has a plurality of axisymmetric superconducting coils of differing diameters which are disposed along an axis in order of successively increasing diameters so as to define the frustoconical shape. This shape permits a patient access opening which is much larger than that in conventional cylindrical magnets. The overall length is much less than the length of conventional systems. The combination of wide opening and short length facilitates patient access and presents a feeling of openness. Furthermore, the device can be tilted with respect to horizontal to increase the openness.
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