Study of Magnetic Field Inhomogeneity Due to Different Positional Deviations of a Permanent Magnet Guideway

2010 ◽  
Vol 24 (5) ◽  
pp. 1473-1478 ◽  
Author(s):  
Q. X. Lin ◽  
G. T. Ma ◽  
D. H. Jiang ◽  
J. S. Wang ◽  
S. Y. Wang
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Magnetic Field Inhomogeneity ◽  
Field Inhomogeneity ◽  
Permanent Magnet Guideway

A Kind of Shimming Method for MRI

2014 ◽  
Vol 889-890 ◽  
pp. 230-233
Author(s):  
Xiao Bing Zhang
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Magnetic Field Inhomogeneity ◽  
Field Inhomogeneity ◽  
Open Mri ◽  
Precision And Accuracy ◽  
The Magnetic Field

This paper presents a shimming method for correct the magnetic field inhomogeneity generated by the permanent magnet biplanar open MRI magnets. After giving the explanation of the degree of the magnetic field inhomogeneity, the shimming principle and method are given. In order to guarantee the precision and accuracy of the magnetic field, a 3D moving flat is developed. The intensity of magnetic field is shown by the aid of the Excel, and the engineer can shim the magnetic field by interacting with the computer. After using the proposed method on a batch of permanent magnet biplanar open MRIs, the experiment results show that the proposed method is effective.

NMR measurement of magnetic field inhomogeneity

1991 ◽  
Vol 34 (6) ◽  
pp. 610-613
Author(s):  
Ya. Weis ◽  
I. Frollo ◽  
L. Budinsk�
Keyword(s):  
Magnetic Field ◽  
Magnetic Field Inhomogeneity ◽  
Field Inhomogeneity
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