27th ISMRM Annual Meeting • 11-16 May 2019 • Montréal, QC, Canada

Sunrise Session
Quantitative MRI: Electrical Property Mapping

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Quantitative MRI: Electrical Property Mapping
Sunrise Session

ORGANIZERS: José Marques, Sebastian Kozerke, Ileana Hancu

Thursday, 16 May 2019
Room 513D-F  07:00 - 08:00 Moderators:  José Marques, Seung-Kyun Lee

Skill Level: Intermediate to Advanced

Session Number: S-TH-08

Extend the understanding of the MR signal evolution beyond the simple phenemenological single-pool relaxation models. 

During this educational course, the role of tissue physical properties such as magnetic susceptibility and electric conductivity and how they affect imaging and relaxation processes will be addressed. Furthermore, the role of diffusion, perfusion, flow in the observed signal and how they can be encoded and measured in MRI will be discussed.

Target Audience
Scientists who are interested in developing/improving quantitative MR approaches.

Educational Objectives
As a result of attending this course, participants should be able to:
- Develop MR pulse sequence design to implement practical encoding approaches of the various physical properties of tissues;
- Apply decoding equation/reconstruction to calculate tissue magnetic susceptibility, electrical conductivity, relaxation, diffusion, perfusion, flow; and
- Compare various software solutions for data reconstruction/processing.


Dielectric Tissue Properties & the MRI Methods for Its Quantification
Dong-Hyun Kim
The dielectric constant of in vivo tissue has been an active research area since the early days of the discovery of electromagnetic theory. Recently, methods to probe the dielectric properties (especially conductivity and permittivity) non-invasively has been presented to the MRI community. This course will present theoretical background regarding MREPT (MR Electrical Properties Tomography) and MREIT (MR Electrical Impedance Tomography) which measures the dielectric properties of tissue in vivo. The interactions between electromagnetic fields under certain dielectric properties will be explained. The link between Maxwell equation and Bloch equation will also be explored in the context of impedance tomography. Acquisition and reconstruction strategies for dielectric property mapping will be presented. The intended audience are those interested with quantitative methods for MR especially in dielectric properties. By the end of the talk, the audience should be able to basic understanding of the techniques. 

  Electrical Property Mapping: Practical Considerations and Strategies
Rosalind Sadleir
Description of Practical Strategies for Planning, Acquiring and Reconstructing Tissue Electrical Properties Using MRI

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