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Extraction of Electrical Properties of Strokes from Magnetic Resonance Scans – Testing on Simplified Head Phantoms

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F17%3A00317051" target="_blank" >RIV/68407700:21460/17:00317051 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Extraction of Electrical Properties of Strokes from Magnetic Resonance Scans – Testing on Simplified Head Phantoms

  • Original language description

    Several studies have reported considerable differences in dielectric properties between healthy and pathological tissues. In addition, in the area of electromagnetic field applications in medicine, discussions about the correctness of dielectric properties of biological tissues measured ex vivo (the most common method of measurement), for example due to lower blood content, are taking place. By using the inherent electromagnetic working principle of magnetic resonance (MR) systems, changes in wave propagation can be used to extract values of dielectric properties of target tissues from MR images. This method thus represents a method for non-invasive measurement of dielectric properties of biological tissues in Vivo. The results might be used for detection and classification of illness. It has been show in literature that both magnitude and phase of the MR RF waves can be determined using standard MR imaging sequences. By using the resulting magnitude and phase of RF waves dielectric properties can be determined by simply using the Helmholtz equation. In this study we confirm such reports through numerical simulations using high-resolution anatomical head model and a model of bird-cage coil. Furthermore, a simplified head phantom mimicking dielectric properties of strokes and brain tissues was designed and manufactured and information from real MR scans was processed. As it will be shown in this work, this process works well for data obtained via numerical simulations but it is not as straightforward, for the images coming from the MR system. There, additional processing in order to compensate for the presence of noise and de-phasing is crucial.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20201 - Electrical and electronic engineering

Result continuities

  • Project

    <a href="/en/project/GJ17-00477Y" target="_blank" >GJ17-00477Y: Physical nature of interactions of EM fields generated by MTM structures with human body and study of their prospective use in medicine</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings of the 39th PIERS in Singapore

  • ISBN

  • ISSN

    1559-9450

  • e-ISSN

  • Number of pages

    5

  • Pages from-to

  • Publisher name

    The Electromagnetics Academy

  • Place of publication

    Cambridge, MA

  • Event location

    Singapore

  • Event date

    Nov 19, 2017

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article