Patent Number: 6,294,972

Title: Method for shimming a static magnetic field in a local MRI coil

Abstract: A local head coil for an MRI system includes a passive shim assembly having ferroshims placed to reduce B.sub.0 field inhomogeneities caused by susceptibility effects in the subject being imaged. A prescan is performed with the subject in place to measure B.sub.0 field inhomogeneities and the passive shim assembly is tailored to the subject by attaching ferroshim inserts based on these measurements.

Inventors: Jesmanowicz; Andrzej (Wauwatosa, WI), Hyde; James S. (Dousman, WI), Punchard; William F. B. (Sudburry, MA), Starewicz; Piotr M. (Somerville, MA)

Assignee: The MCW Research Foundation, Inc.

International Classification: G01R 33/38 (20060101); G01R 33/3873 (20060101); G01R 33/3875 (20060101); G01V 003/00 (); G01V 003/14 (); G01R 033/20 ()

Expiration Date: 09/25/2018