| TO5 as a magnetization transfer contrast test object: characterization of the gels and determination of the real magnetization transfer. | |
| | |
MedLine Citation:
|
PMID: 9220408 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Following the work of the European concerted action, "Tissue characterization by magnetic resonance spectroscopy and imaging," sets of five test objects (TO) were designed, produced, and distributed among European laboratories. The TO were designed to control the image quality of clincial magnetic resonance imaging in an independent and uniform mode. The fifth test object (TO5) was devoted to relaxation measurements and composed of 18 agarose tubes, inserted in an holder filled with a CuSO4 solution. These gels are subject to magnetization transfer (MT). The purpose of this paper is to characterize their MT parameters. An individual study of each gel was performed in a spectrometer, and an individual fit, as well as a global fit, was done on the two-pool model. The MT parameters found in each case are in agreement with the known properties of the agarose gels and given below. The real MT (transfer of magnetization from water to macromolecules) was computed, taking into account the "bleeding over" (direct saturation of the water magnetization). The maximum real MT ranges from 15 to 35% and can be obtained with almost the same saturation pulse conditions for all the gels. However, the saturating field required to reach the maximum MT is very high (46 microT) and unserviceable on a clinical device. |
| | |
Authors:
|
D Gounot; Y Mauss; J Chambron |
Related Documents
:
|
18263948 - Magnetic-field-induced dose effects in mr-guided radiotherapy systems: dependence on th... 17621228 - High-field-strength magnetic resonance: potential and limits. 15259368 - Antennae: the strongest magnetic part of the migratory ant. 18779068 - Correction for resolution nonuniformities caused by anode angulation in computed tomogr... 2243988 - Determination of left ventricular volume and mass with use of biphasic spin-echo mr ima... 11932048 - Prolonged unilateral vasodilatation and brain edema in fulminant hepatic failure, assoc... |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Magma (New York, N.Y.) Volume: 4 ISSN: 0968-5243 ISO Abbreviation: MAGMA Publication Date: 1996 Sep-Dec |
Date Detail:
|
Created Date: 1997-09-22 Completed Date: 1997-09-22 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 9310752 Medline TA: MAGMA Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 195-204 Citation Subset: IM |
Affiliation:
|
Institut de Physique Biolgique, Faculté de Médecine, Strasbourg, France. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Biometry Europe Gels Humans Magnetic Resonance Imaging / standards*, statistics & numerical data Magnetics Phantoms, Imaging / standards*, statistics & numerical data Quality Control Sepharose Water |
| Chemical | |
Reg. No./Substance:
|
0/Gels; 7732-18-5/Water; 9012-36-6/Sepharose |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Young Investigator Award presentation at the 13th Annual Meeting of the ESMRMB, September 1996, Prag...
Next Document: Magnetic resonance imaging of bovine ovaries in vitro.