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case1169749200.pdf (4.19 MB)
ETD Abstract Container
Abstract Header
NEW DIRECTIONS IN THE DESIGN OF MRI GRADIENT COILS
Author Info
BAIG, TANVIR N
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=case1169749200
Abstract Details
Year and Degree
2007, Doctor of Philosophy, Case Western Reserve University, Physics.
Abstract
In this dissertation new designs for gradient coils are presented. The principal work is on better shielding for fringe field reduction. Fringe fields from gradient coils produce eddy currents in surrounding metal structures. Such eddy currents can degrade image quality and lead to acoustic noise. Our new shielded gradient coil designs that feature the inclusion of an endcap have significantly reduced fringe field at the cryostat inner bore. We discuss the degree to which the suppression of peak fringe fields corresponds to a reduction in the acoustic noise generated near the end of the warm bore. Energy efficient capped actively shielded elliptical gradient coils are also designed. In addition, a design for a very short, symmetrical, and winged X-gradient insertable head coil is presented. Apart from the uniformity along the z-axis direction the new coil achieved characteristics similar to that of coils almost twice its length.
Committee
Robert Brown (Advisor)
Pages
186 p.
Subject Headings
Physics, General
Keywords
Endcap
;
GRADIENT COILS
;
Elliptic
;
Z-gradient
;
X-gradient
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
BAIG, T. N. (2007).
NEW DIRECTIONS IN THE DESIGN OF MRI GRADIENT COILS
[Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1169749200
APA Style (7th edition)
BAIG, TANVIR.
NEW DIRECTIONS IN THE DESIGN OF MRI GRADIENT COILS.
2007. Case Western Reserve University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=case1169749200.
MLA Style (8th edition)
BAIG, TANVIR. "NEW DIRECTIONS IN THE DESIGN OF MRI GRADIENT COILS." Doctoral dissertation, Case Western Reserve University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=case1169749200
Chicago Manual of Style (17th edition)
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Document number:
case1169749200
Download Count:
3,597
Copyright Info
© 2007, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.