| US 7,466,133 B2 | ||
| Systems, methods and apparatus of a magnetic resonance imaging system to produce a stray field suitable for interventional use | ||
| Timothy John Havens, Florence, S.C. (US); Stephen R. Elgin, Florence, S.C. (US); and Ricardo Becerra, Waukesha, Wis. (US) | ||
| Assigned to General Electric Company, Schenectady, N.Y. (US) | ||
| Filed on Mar. 01, 2005, as Appl. No. 11/69,294. | ||
| Prior Publication US 2006/0238196 A1, Oct. 26, 2006 | ||
| Int. Cl. G01V 3/00 (2006.01) | ||
| U.S. Cl. 324—319 [335/216] | 22 Claims |
| 1. A magnetic resonance imaging apparatus to allow access in close proximity to the apparatus, the apparatus comprising:
a casing having an inner bore, the inner bore having two apertures; and
at least one magnetic shield coil positioned asymmetrically in the casing, the magnetic shield coil positioned in close proximity
to one of the two apertures and the magnetic shield coil positioned in close proximity to the inner bore.
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