We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

End cap design for bird cage coils in nuclear magnetic resonance imaging

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Xiaoming Lou ; GE Med. Syst., Waukesha, WI, USA ; Gedney, S.D. ; Avison, M.J.

Two end cap designs for bird cage coils for application in nuclear magnetic resonance head imaging are presented. The objectives of the new design are to improve the B1 field homogeneity within the coil and to improve the SNR. Design I extends the legs and one end ring of the bird cage coil onto the end cap. The radius of the end ring on the end cap is optimized to maximize the axial field of view with a limited B1 field homogeneity. Design II uses a metal disk plate as a mirror placed at one end of the bird cage coil; it is analyzed by using a moment method. The size of the metal plate is optimized. An analysis of the two end cap designs is presented. The results show that in design I the optimal radius of the end ring on the end cap is about 2.5 times smaller than the coil radius; in design II, the inner radius of the disk mirror should be as small as possible and the mirror should be as close as possible to the coil for B1 field homogeneity; making the outer radius of the disk larger than the coil radius does not much improve the B1 field homogeneity

Published in:

Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 3 )