Usefulness of virtual endoscopic three-dimensional reconstructions of the middle ear.
This work uses a new programme for producing 3D radiological images acquired by means of CT which enables the internal surfaces of the examined structures to be visualized. This new method, which is able to navigate inside organs in a similar way to fibreoptic endoscopy, is known as virtual endoscop...
| Publicado en: | Acta Oto-Laryngologica Vol. 122; no. 4; pp. 382 - 386 |
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| Autores principales: | , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jun2002
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106097489&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106097489 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00016489 B6D jtl: Acta Oto-Laryngologica issn: 00016489 maglogo: Y pubinfo: dt: Jun2002 vid: 122 iid: 4 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 106097489 2009448993 NLM12125993 106097489 ppf: 382 ppct: 4 formats: fmt: @attributes: type: P tig: atl: Usefulness of virtual endoscopic three-dimensional reconstructions of the middle ear. aug: au: Morra A Tirelli G Rimondini A Cioffi V Russolo M Giacomarra V Pozzi-Mucelli R sug: subj: Ear, Middle Radiography Ear, Middle Surgery Endoscopy Methods Surgery, Reconstructive Methods User-Computer Interface Tomography, X-Ray Computed ab: This work uses a new programme for producing 3D radiological images acquired by means of CT which enables the internal surfaces of the examined structures to be visualized. This new method, which is able to navigate inside organs in a similar way to fibreoptic endoscopy, is known as virtual endoscopy. CT examinations of the temporal bone were carried out using spiral equipment and endoscopic 3D processing was carried out on a separate workstation equipped with a volume-rendering programme. Once the technical parameters necessary for obtaining a representation of the internal surfaces had been defined, a simulation of a virtual otoscopy was conducted by moving the virtual endoscope from the external auditory canal through the annulus to the tympanic cavity. The simulation can be obtained either by moving the endoscope by hand, using the mouse, or by defining a path along which the software automatically creates an endoscopic 3D reconstruction. The images thus obtained are projected sequentially to give a ''movie'' effect, i.e. a continuous progression of the endoscope. The average time required to conduct the procedure ranges from 20 to 30 min. A virtual endoscopic visualization of the middle ear was obtained which, in particular, generated images of the tympanic cavity with the ossicular chain. In our experience, virtual otoscopy shows the anatomy of the structures of the tympanic cavity in excellent detail and may be considered complementary to CT, providing useful images enabling better visual representation and understanding of this complex structure. Although clinical applications of the technique remain to be defined it may have a role to play in presurgical diagnostic evaluation of the ossicular chain, epitympanum and retrotympanum. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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