Schiff Hardin LLP
Method and apparatus for correcting the uniformity of a magnetic field
In a method and apparatus for correcting the uniformity of a magnetic field, an active shim shell is placed in the magnetic field, a magnetic resonance image of the active shim shell obtained, and the placement position of the active shim shell is determined by analyzing the magnetic resonance image. The value of a shim current in the active shim shell is determined so as to meet the uniformity requirements of the magnetic field according to the placement position. The value of the shim current in said active shim shell is set to the determined value of the shim current.
Siemens Aktiengesellschaft
G G
G01R G01R
additional inventional
Oliver Jin Jun
Schreck Chen