Format

Send to:

Choose Destination
See comment in PubMed Commons below
Magn Reson Med. 1991 Jul;20(1):113-22.

Rapid, fully automatic, arbitrary-volume in vivo shimming.

Author information

  • 1Department of Electrical Engineering, 120 Durand, Stanford University, California 94305.

Abstract

MR spectroscopy and many MR imaging methods benefit from a well-shimmed magnet. We have developed a pulse sequence which enables fast and accurate measurement of three-dimensional field maps in vivo, and a data analysis package that allows calculation of shim currents to optimally shim arbitrary selected volumes. A data link to the shim power supply allows automatic update of currents. No intervention by the operator is required. Typical in vivo shimming time is less than 5 min. Performance analysis, phantom, and in vivo results are presented.

PMID:
1943653
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk