Automatic identification and 3D rendering of temporal bone anatomy.
Hypothesis: Using automated methods, vital anatomy of the middle ear can be identified in computed tomographic (CT) scans and used to create 3-dimensional (3D) renderings.Background: Although difficult to master, clinicians compile 2D data from CT scans to envision 3D anatomy. Computer programs exis...
| Published in: | Otology & Neurotology Vol. 30; no. 4; pp. 436 - 443 |
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| Main Authors: | , , , , , , , |
| Format: | Journal Article |
| Published: |
Lippincott Williams & Wilkins
2009 Jun
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105370893&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105370893 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15317129 I6D jtl: Otology & Neurotology issn: 15317129 maglogo: N pubinfo: dt: 2009 Jun vid: 30 iid: 4 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 105370893 NLM19339909 2010329967 10.1097/MAO.0b013e31819e61ed NLM19339909 PMC4437534 105370893 ppf: 436 ppct: 7 formats: tig: atl: Automatic identification and 3D rendering of temporal bone anatomy. aug: au: Noble JH Dawant BM Warren FM Labadie RF Noble, Jack H Dawant, Benoit M Warren, Frank M Labadie, Robert F affil: Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA sug: subj: Bar Coding Methods Diagnostic Imaging Methods Temporal Bone Anatomy and Histology Algorithms Bar Coding Equipment and Supplies Diagnostic Imaging Equipment and Supplies Ear Canal Anatomy and Histology Ear Canal Radiography Ear Ossicles Anatomy and Histology Ear Ossicles Radiography Facial Nerve Anatomy and Histology Facial Nerve Radiography Information Science Ear, Inner Anatomy and Histology Ear, Inner Radiography Radiographic Image Interpretation, Computer-Assisted Software Temporal Bone Radiography Tomography, X-Ray Computed ab: Hypothesis: Using automated methods, vital anatomy of the middle ear can be identified in computed tomographic (CT) scans and used to create 3-dimensional (3D) renderings.Background: Although difficult to master, clinicians compile 2D data from CT scans to envision 3D anatomy. Computer programs exist that can render 3D surfaces but are limited in that ear structures, for example, the facial nerve, can only be visualized after time-intensive manual identification for each scan. Here, we present results from novel computer algorithms that automatically identify temporal bone anatomy (external auditory canal, ossicles, labyrinth, facial nerve, and chorda tympani).Methods: An atlas of the labyrinth, ossicles, and auditory canal was created by manually identifying the structures in a "normal" temporal bone CT scan. Using well-accepted techniques, these structures were automatically identified in (n = 14) unknown CT images by deforming the atlas to match the unknown volumes. Another automatic localization algorithm was implemented to identify the position of the facial nerve and chorda tympani. Results were compared with manual identification by measuring false-positive and false-negative error.Results: The labyrinth, ossicles, and auditory canal were identified with mean errors less than 0.5 mm. The mean errors in facial nerve and chorda tympani identification were less than 0.3 mm.Conclusion: Automated identification of temporal bone anatomy is achievable. The presented combination of techniques was successful in accurately identifying temporal bone anatomy. These results were obtained in less than 10 minutes per patient scan using standard computing equipment. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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