| Optimising magnetic resonance image quality of the ear in healthy dogs. | |
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MedLine Citation:
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PMID: 21354941 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The aim of this study was to develop an examination protocol for magnetic resonance imaging, in order to display diagnostically important information of the canine middle and inner ear. To ensure that this protocol could also be used as a basis for determining pathological changes, the anatomical structures of the ear were presented in detail. To minimise stress through anaesthesia in live animals, preliminary examinations were carried out on four dog cadavers. During these initial examinations, three-dimensional (3D) sequences proved to be superior to two-dimensional ones. Therefore, only 3D sequences were applied for the main examinations performed on six clinically healthy Beagles. The anonymised MR images were rated by three experienced reviewers using a five-point scale. The most valuable sequence was a T2-weighted CISS sequence (TR = 16.7 ms, TE = 8.08 ms). This sequence proved to be most suitable for illustrating the inner ear structures and enabled good tissue contrasts. The sequence ranked second best was also a T2-weighted DESS sequence (TR = 19 ms, TE = 6 ms), allowing the imaging of the tympanic cavity and enabling 3D reconstruction due to its isotropic voxels. Due to low contrast and strong noise, the other sequences (TSE, FISP, MP RAGE) were not suitable for anatomical illustration of the middle and inner ear. |
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Authors:
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Davina Wolf; Matthias Lüpke; Patrick Wefstaedt; Thilo Klopmann; Ingo Nolte; Hermann Seifert |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Acta veterinaria Hungarica Volume: 59 ISSN: 0236-6290 ISO Abbreviation: Acta Vet. Hung. Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-02-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8406376 Medline TA: Acta Vet Hung Country: Hungary |
Other Details:
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Languages: eng Pagination: 53-68 Citation Subset: IM |
Affiliation:
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University of Veterinary Medicine Hanover, Foundation Institute for General Radiology and Medical Physics Bischofsholer Damm 15 D-30173 Hanover Germany University of Veterinary Medicine Hanover, Foundation Small Animal Clinic Bischofsholer Damm 15 D-30173 Hanover Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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