04931759 is referenced by 13 patents and cites 11 patents.

A magnetic resonance imaging magnet has a solenoidal superconducting winding producing a magnetic field and defining an examination region within a bore thereof. The examination region receives a body to be examined. The solenoidal superconducting winding generates a quasi-static magnetic field for aligning atomic nuclei in the body being examined. A two-fold or minimally symmetric ferromagnetic shield has a pair of magnetic flux return paths positioned on opposite sides of the solenoidal superconducting winding for reducing the magnetic field intensity in a region proximate to and outside of the solenoidal superconducting winding. A magnetic field inhomogeneity compensating system reduces magnetic field inhomogeneities introduced into the magnetic field within the examination region by the minimally symmetric ferromagnetic shield to provide a highly uniform quasi-static magnetic field within the examination region.

Title
Magnetic resonance imaging magnet having minimally symmetric ferromagnetic shield
Application Number
7/334291
Publication Number
4931759
Application Date
April 6, 1989
Publication Date
June 5, 1990
Inventor
Raymond E Sarwinski
San Diego
CA, US
John R Purcell
San Diego
CA, US
Bruce C Breneman
San Diego
CA, US
Assignee
General Atomics
IPC
H01F 7/00
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