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Article: Is virtual endoscopy of the middle ear useful?
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TitleIs virtual endoscopy of the middle ear useful?
 
AuthorsHo, ACW
Lee, R
Co, MTH
Chow, CK
Au Yeung, KM
 
Issue Date2011
 
PublisherMedquest Communications, LLC. The Journal's web site is located at http://www.entjournal.com
 
CitationEar, Nose & Throat Journal, 2011, v. 90 n. 6, p. 256-260 [How to Cite?]
 
AbstractVirtual endoscopy is a relatively new imaging technology in otology, and therefore data on its efficacy in clinical situations are limited. We conducted a prospective study to evaluate the clinical relevance of radiologic diagnoses based on virtual endoscopy of the middle ear. Our patient population was made up of 30 adults who were scheduled to undergo surgery to correct conductive hearing loss of unknown etiology. Virtual endoscopy was performed on three-dimensional images that were constructed from images obtained with conventional two-dimensional computed tomography (CT). Findings on virtual endoscopy were then compared with the subsequent surgical findings. Virtual endoscopy suggested a middle ear pathology in 19 patients and a normal middle ear in 11 patients. Postoperatively, we found that the virtual diagnoses correlated moderately well with the surgical findings in the group of patients with predicted pathology; 13 of these 19 patients were found to have middle ear problems such as ossicular chain anomalies, otosclerosis, and cholesteatoma (positive predictive value: 68%). However, among the 11 patients whose middle ear structures were radiologically predicted to be normal, only 2 had negative middle ear findings on surgical exploration; of the remaining 9 patients, 8 had otosclerosis and 1 had malleus fixation (negative predictive value: 18%). Thus, the sensitivity and specificity of virtual endoscopy were 59 and 25%, respectively. Virtual endoscopy provides images from a surgeon's perspective, and so it has the potential to be useful in the preoperative evaluation of the middle ear cavity. With ongoing advancements in computer systems and imaging techniques, the cost, reliability, and efficacy of virtual endoscopy may improve. However, further clinical validation and cost-benefit analysis are required before we can determine if it has any additional advantages over conventional two-dimensional CT.
 
ISSN0145-5613
2012 Impact Factor: 1.03
2012 SCImago Journal Rankings: 0.217
 
ISI Accession Number IDWOS:000305720900007
 
DC FieldValue
dc.contributor.authorHo, ACW
 
dc.contributor.authorLee, R
 
dc.contributor.authorCo, MTH
 
dc.contributor.authorChow, CK
 
dc.contributor.authorAu Yeung, KM
 
dc.date.accessioned2011-09-23T05:55:01Z
 
dc.date.available2011-09-23T05:55:01Z
 
dc.date.issued2011
 
dc.description.abstractVirtual endoscopy is a relatively new imaging technology in otology, and therefore data on its efficacy in clinical situations are limited. We conducted a prospective study to evaluate the clinical relevance of radiologic diagnoses based on virtual endoscopy of the middle ear. Our patient population was made up of 30 adults who were scheduled to undergo surgery to correct conductive hearing loss of unknown etiology. Virtual endoscopy was performed on three-dimensional images that were constructed from images obtained with conventional two-dimensional computed tomography (CT). Findings on virtual endoscopy were then compared with the subsequent surgical findings. Virtual endoscopy suggested a middle ear pathology in 19 patients and a normal middle ear in 11 patients. Postoperatively, we found that the virtual diagnoses correlated moderately well with the surgical findings in the group of patients with predicted pathology; 13 of these 19 patients were found to have middle ear problems such as ossicular chain anomalies, otosclerosis, and cholesteatoma (positive predictive value: 68%). However, among the 11 patients whose middle ear structures were radiologically predicted to be normal, only 2 had negative middle ear findings on surgical exploration; of the remaining 9 patients, 8 had otosclerosis and 1 had malleus fixation (negative predictive value: 18%). Thus, the sensitivity and specificity of virtual endoscopy were 59 and 25%, respectively. Virtual endoscopy provides images from a surgeon's perspective, and so it has the potential to be useful in the preoperative evaluation of the middle ear cavity. With ongoing advancements in computer systems and imaging techniques, the cost, reliability, and efficacy of virtual endoscopy may improve. However, further clinical validation and cost-benefit analysis are required before we can determine if it has any additional advantages over conventional two-dimensional CT.
 
dc.identifier.citationEar, Nose & Throat Journal, 2011, v. 90 n. 6, p. 256-260 [How to Cite?]
 
dc.identifier.epage260
 
dc.identifier.hkuros192361
 
dc.identifier.isiWOS:000305720900007
 
dc.identifier.issn0145-5613
2012 Impact Factor: 1.03
2012 SCImago Journal Rankings: 0.217
 
dc.identifier.issue6
 
dc.identifier.pmid21674468
 
dc.identifier.spage256
 
dc.identifier.urihttp://hdl.handle.net/10722/139739
 
dc.identifier.volume90
 
dc.languageeng
 
dc.publisherMedquest Communications, LLC. The Journal's web site is located at http://www.entjournal.com
 
dc.publisher.placeUnited States
 
dc.relation.ispartofEar, Nose & Throat Journal
 
dc.subject.meshDiagnosis, Computer-Assisted - methods
 
dc.subject.meshEar, Middle - pathology - surgery
 
dc.subject.meshEndoscopy - instrumentation
 
dc.subject.meshHearing Loss, Conductive - diagnosis - pathology - surgery
 
dc.subject.meshUser-Computer Interface
 
dc.titleIs virtual endoscopy of the middle ear useful?
 
dc.typeArticle
 
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<contributor.author>Lee, R</contributor.author>
<contributor.author>Co, MTH</contributor.author>
<contributor.author>Chow, CK</contributor.author>
<contributor.author>Au Yeung, KM</contributor.author>
<date.accessioned>2011-09-23T05:55:01Z</date.accessioned>
<date.available>2011-09-23T05:55:01Z</date.available>
<date.issued>2011</date.issued>
<identifier.citation>Ear, Nose &amp; Throat Journal, 2011, v. 90 n. 6, p. 256-260</identifier.citation>
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<description.abstract>Virtual endoscopy is a relatively new imaging technology in otology, and therefore data on its efficacy in clinical situations are limited. We conducted a prospective study to evaluate the clinical relevance of radiologic diagnoses based on virtual endoscopy of the middle ear. Our patient population was made up of 30 adults who were scheduled to undergo surgery to correct conductive hearing loss of unknown etiology. Virtual endoscopy was performed on three-dimensional images that were constructed from images obtained with conventional two-dimensional computed tomography (CT). Findings on virtual endoscopy were then compared with the subsequent surgical findings. Virtual endoscopy suggested a middle ear pathology in 19 patients and a normal middle ear in 11 patients. Postoperatively, we found that the virtual diagnoses correlated moderately well with the surgical findings in the group of patients with predicted pathology; 13 of these 19 patients were found to have middle ear problems such as ossicular chain anomalies, otosclerosis, and cholesteatoma (positive predictive value: 68%). However, among the 11 patients whose middle ear structures were radiologically predicted to be normal, only 2 had negative middle ear findings on surgical exploration; of the remaining 9 patients, 8 had otosclerosis and 1 had malleus fixation (negative predictive value: 18%). Thus, the sensitivity and specificity of virtual endoscopy were 59 and 25%, respectively. Virtual endoscopy provides images from a surgeon&apos;s perspective, and so it has the potential to be useful in the preoperative evaluation of the middle ear cavity. With ongoing advancements in computer systems and imaging techniques, the cost, reliability, and efficacy of virtual endoscopy may improve. However, further clinical validation and cost-benefit analysis are required before we can determine if it has any additional advantages over conventional two-dimensional CT.</description.abstract>
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