Photocopying – Contact printing – Light boxes
Patent
1992-09-08
1994-04-26
Donovan, Lincoln
Photocopying
Contact printing
Light boxes
324318, 1286535, H01F 500
Patent
active
053070399
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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Chari Madabushi V.
Laskaris Evangelos T.
Ogle Michele D.
Donovan Lincoln
General Electric Company
Scanlon Patrick R.
Webb II Paul R.
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