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dc.contributor.authorRohleder, Jacob Johnen_US
dc.date.accessioned2014-03-14T20:34:25Z
dc.date.available2014-03-14T20:34:25Z
dc.date.issued2004-04-14en_US
dc.identifier.otheretd-04272004-122301en_US
dc.identifier.urihttp://hdl.handle.net/10919/31965
dc.description.abstractThe purpose of this study was to compare CT and radiography for diagnosing the presence and severity of middle ear disease in dogs with chronic otitis externa. Thirty-one dogs that were presented for a total ear canal ablation and bulla osteotomy were recruited. Three normal dogs served as controls. All dogs were examined using radiography and CT. Three radiologists independently evaluated imaging studies in random order. A visual analog scale method was used for scoring certainty and severity of middle ear disease. Surgical findings were recorded intra-operatively. Bulla lining samples were submitted for histopathology and scored by a single pathologist who also used a visual analog scale system. Findings from both modalities agreed more closely with surgical findings than with histopathology findings. With either surgery or histopathology as the gold standard, CT was more sensitive than and as specific as radiographs for predicting presence and severity of middle ear disease. Overall severity of middle ear disease was lower in the right versus the left ears. For CT, inter-observer variance of middle ear certainty was 217.04 while radiographic variance was 126.14 on the side with lower severity estimates. Both radiography and CT were more accurate for predicting the severity of the disease than its presence. Findings indicate that CT is more accurate and reliable than radiography in diagnosing middle ear disease for dogs with chronic otitis externa, but only when severity of disease is moderate or high. With low severity of disease, reader diagnostic certainty for both modalities becomes more variable.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartrohlthesisFinal.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectotitis mediaen_US
dc.subjectmiddle ear diseaseen_US
dc.subjectcomputed tomographyen_US
dc.subjectcanineen_US
dc.subjectradiographyen_US
dc.subjectdogen_US
dc.subjectCTen_US
dc.titleA comparison of radiography versus computed tomography in the diagnosis of middle ear disease in the dogen_US
dc.typeThesisen_US
dc.contributor.departmentVeterinary Medical Sciencesen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineVeterinary Medical Sciencesen_US
dc.contributor.committeechairJones, Jeryl C.en_US
dc.contributor.committeememberLarson, Martha Moonen_US
dc.contributor.committeememberWaldron, Don R.en_US
dc.contributor.committeememberDuncan, Robert B. Jr.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04272004-122301/en_US
dc.date.sdate2004-04-27en_US
dc.date.rdate2012-10-02
dc.date.adate2004-05-04en_US


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