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Multi-dimensional excitation in magn...

Case Western Reserve University.

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Multi-dimensional excitation in magnetic resonance imaging for homogeneity correction in the presence of dielectric media.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Multi-dimensional excitation in magnetic resonance imaging for homogeneity correction in the presence of dielectric media./
Author:	Heilman, Jeremiah Aaron.
Description:	271 p.
Notes:	Adviser: Mark Griswold.
Contained By:	Dissertation Abstracts International70-03B.
Subject:	Engineering, Biomedical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3350865
ISBN:	9781109066425

Multi-dimensional excitation in magnetic resonance imaging for homogeneity correction in the presence of dielectric media.
Heilman, Jeremiah Aaron.

Multi-dimensional excitation in magnetic resonance imaging for homogeneity correction in the presence of dielectric media. - 271 p.

Adviser: Mark Griswold.

Thesis (Ph.D.)--Case Western Reserve University, 2009.

Two objectives are addressed in this thesis. First is the design and construction of a customized transmission hardware solution for the purpose of assembling a multi-channel transmission array. We demonstrate how a current-mode class-D amplifier and accompanying electronics form a system with high power, efficiency, decoupling, and scalability features. Second is application of this hardware for outstanding problems in clinical MRI, specifically to correction of problems B0 variations create and reduction of coupling to long conductors, such as are found in implanted medical devices. We show that an array of transmission elements can address both of these concerns, through thoughtful selection of the fields that each element produces by capitalizing on their intrinsic frequency, amplitude, and phase degrees of freedom.

ISBN: 9781109066425Subjects--Topical Terms:

1017684
Engineering, Biomedical.

Multi-dimensional excitation in magnetic resonance imaging for homogeneity correction in the presence of dielectric media.
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020 $a 9781109066425
035 $a (UMI)AAI3350865
035 $a AAI3350865
040 $a UMI $c UMI
100 1 $a Heilman, Jeremiah Aaron. $3 1064668
245 1 0 $a Multi-dimensional excitation in magnetic resonance imaging for homogeneity correction in the presence of dielectric media.
300 $a 271 p.
500 $a Adviser: Mark Griswold.
500 $a Source: Dissertation Abstracts International, Volume: 70-03, Section: B, page: 1728.
502 $a Thesis (Ph.D.)--Case Western Reserve University, 2009.
520 $a Two objectives are addressed in this thesis. First is the design and construction of a customized transmission hardware solution for the purpose of assembling a multi-channel transmission array. We demonstrate how a current-mode class-D amplifier and accompanying electronics form a system with high power, efficiency, decoupling, and scalability features. Second is application of this hardware for outstanding problems in clinical MRI, specifically to correction of problems B0 variations create and reduction of coupling to long conductors, such as are found in implanted medical devices. We show that an array of transmission elements can address both of these concerns, through thoughtful selection of the fields that each element produces by capitalizing on their intrinsic frequency, amplitude, and phase degrees of freedom.
590 $a School code: 0042.
650 4 $a Engineering, Biomedical. $3 1017684
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Physics, Electricity and Magnetism. $3 1019535
690 $a 0541
690 $a 0544
690 $a 0607
710 2 $a Case Western Reserve University. $3 1017714
773 0 $t Dissertation Abstracts International $g 70-03B.
790 $a 0042
790 1 0 $a Griswold, Mark, $e advisor
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3350865