Design Principles for Insulated Internal Loopless MRI Receivers

Abstract

A theoretical analysis of insulated internal loopless MRI receivers is presented. Insulated loopless receivers are ideal for local, high resolution imaging of the vasculature and other internal organs. However, there are currently no analysis techniques or design principles for these devices. By using a Galerkin method of moments combined with an application of the volume equivalence theorem, we solve for the intrinsic SNR distribution of insulated loopless receivers. As insulation thickness is increased, the resonant antenna length increases while the noise resistance decreases. Both of these effects, when used together, can greatly improve the SNR magnitude and distribution of loopless receivers. Design principles outlined here will allow for optimization of loopless receivers for a variety of internal, high resolution imaging applications.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA411635

Entities

People

  • Christopher J. Yeung
  • Ergin Atalar
  • Robert C. Susil

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antennas
  • Biomedical Engineering
  • Current Density
  • Dipole Antennas
  • Dipoles
  • Electric Fields
  • Engineering
  • Galerkin Method
  • Human Body
  • Insulation
  • Magnetic Fields
  • Magnetic Moments
  • Method Of Moments
  • Military Research
  • Nuclear Magnetic Moments
  • Resistance
  • Thickness

Fields of Study

  • Physics

Readers

  • Computational Linguistics
  • Phased Array Antenna Design.
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics