| The Learning Curve of Registration in Navigated Skull Base Surgery. | |
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MedLine Citation:
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PMID: 21181619 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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THE LEARNING CURVE OF REGISTRATION IN NAVIGATED SKULL BASE SURGERYBACKGROUND: Computer aided surgery (CAS) is advantageous in challenging procedures in head and neck surgery. It is not clear, if the application of CAS has to be trained to achieve reliable results. The learning curve of the registration of the patient's coordinates to prior acquired radiologic imagery was investigated. MATERIAL AND METHODS: 4 residents performed pair-point registrations on 5 anatomic specimens in an experimental wet lab. The residents were in the same year of education and had no experience in CAS procedures. After each registration the application error was evaluated by determining the target registration error (TRE). Pair point matching by skin glued external fiducials was compared with pair point matching by internal anatomical landmarks. RESULTS: The application accuracy was improved by increasing numbers of performed registrations (p<0.001, trendtest of Page). An inverse trend of the learning curve could be observed, the median TRE values improved from 3.3 mm in the first registration to 1.6 mm after the fifth registration. In comparison e. g. an experienced CAS-user can achieve submillimetric TRE values under wet lab conditions. Pair point matching by anatomical landmarks resulted in worse application accuracy initially and the learning curve was steeper than with external fiducial markers. CONCLUSION: There is a training effect in CAS interventions. Pair point matching results in sufficient application accuracy after training only. |
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Authors:
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F Kral; C Url; G Widmann; H Riechelmann; W Freysinger |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2010-12-21 |
Journal Detail:
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Title: Laryngo- rhino- otologie Volume: - ISSN: 1438-8685 ISO Abbreviation: - Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8912371 Medline TA: Laryngorhinootologie Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© Georg Thieme Verlag KG Stuttgart · New York. |
Affiliation:
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Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde, Medizinische Universität Innsbruck, Austria. |
Vernacular Title:
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Lernkurve bei der Registrierung navigierter Eingriffe an der Schädelbasis. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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