Title:
磁気共鳴撮影装置
Document Type and Number:
Japanese Patent JP3992674
Kind Code:
B2
Abstract:
For the purpose of reducing time taken to obtain a central frequency for each slice when a plurality of slices corresponding to an imaged region exist, as compared with the time taken to measure the central frequency for every slice, and ensuring accuracy of the obtained central frequency at a certain level, slice groups (Gj) are defined in a subject in a static magnetic field by a gradient coil section so that each slice group (Gj) contains a plurality of slices (Si) parallel to one another; central frequencies of slices to be measured (slices S2, S6 and S9) contained in the slice groups (Gj) are actually measured using an RF coil section; and each of the central frequencies actually obtained by the measurement is defined as the central frequencies for slices other than the measured slice in the slice group in which the measured sliced is contained.
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Inventors:
Kenji Asano
Application Number:
JP2003333999A
Publication Date:
October 17, 2007
Filing Date:
September 25, 2003
Export Citation:
Assignee:
GE Medical Systems Global Technology Company LLC
International Classes:
A61B5/055; G01R33/48; G01R33/36; G01R33/54
Domestic Patent References:
| JP63082640A | ||||
| JP2002272702A |
Foreign References:
| EP1519199A1 | ||||
| US7109709 |
Other References:
Glen Morrell, et.al.,"Dynamic Shimming for Multi-Slice Magnetic Resonance Imaging",Magnetic Resonance in Medicine,米国,1997年 9月,Vol.38,No.3,p477-p483
Attorney, Agent or Firm:
Takahisa Sato