The Comparison of the Contrasts of Magnetic Resonance Images of Plants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F13%3APU103345" target="_blank" >RIV/00216305:26220/13:PU103345 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The Comparison of the Contrasts of Magnetic Resonance Images of Plants

Original language description

To obtain an image with the largest information value, the best image contrast during the measurement of the object in the magnetic resonance tomograph is necessary to achieve. This contrast depends on the physical properties of the object, in particular a proton density and relaxation properties of the material. Furthermore, the contrast depends on parameter characteristic for each MR method: Spin Echo, Gradient Echo and Inversion Recovery. The echo time and repetition time are included between the two most important parameters of pulse sequence. We can create four different variants of contrast by combining these two mentioned times: the contrast spin density, the T1 weighted contrast, the T2 weighted contrast, and the last one is inappropriate setting for the contrast. Each resulting contrast is suitable for displaying different plant stem tissues. An increase in the contrast can also be achieved by adding contrast (paramagnetic) substances for differentiation of isomagnetics tissues. The aim of this paper is to display the internal morphology of plants by various methods with subsequent comparison of contrast and identification of an appropriate method for the study of transport of substances in the stem of the plant. Euphorbia cactus was chosen for the study of the image contrasts. This plant was inserted into working space of the tomograph. Images of the plant stem were acquired by a magnetic resonance tomograph with the magnetic field induction of 4.7 T (200 MHz). The evaluation of the results obtained via the applied methods as related the last measurement. The data processing was performed by using Marevisi and Matlab programs. Monitored parameters of individual plant samples were inserted into a table and inserted into graphs. By evaluating and comparing the relaxation times, it can be determined that, in the same selected points, the relaxation time T2 exhibits shorter values than the relaxation time T1. This holds true despite the fact that method for we

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2013

Confidentiality

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

Article name in the collection

PIERS 2013 Taipei, Progress In Electromagnetics Reasearch Symposium

ISBN

978-1-934142-24-0

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

397-400

Publisher name

The Electromagnwetic Academy, USA

Place of publication

Taipei

Event location

Taipei

Event date

Mar 25, 2013

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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