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Titolo:
Computer-aided virtual surgery for congenital aural artresia
Autore:
Smouha, EE; Chen, DQ; Li, B; Liang, ZR;
Indirizzi:
SUNY Stony Brook, Hlth Sci Ctr, Div Otolaryngol Head & Neck Surg, Dept Surg, Stony Brook, NY 11794 USA SUNY Stony Brook Stony Brook NY USA 11794 Surg, Stony Brook, NY 11794 USA SUNY Stony Brook, Dept Radiol, Stony Brook, NY 11794 USA SUNY Stony BrookStony Brook NY USA 11794 diol, Stony Brook, NY 11794 USA
Titolo Testata:
OTOLOGY & NEUROTOLOGY
fascicolo: 2, volume: 22, anno: 2001,
pagine: 178 - 182
SICI:
1531-7129(200103)22:2<178:CVSFCA>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATRESIA; CT;
Keywords:
computed tomography; congenital aural atresia; image segmentation; radiology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Smouha, EE SUNY Stony Brook, Hlth Sci Ctr, Div Otolaryngol Head & Neck Surg, Dept Surg, T-19-090, Stony Brook, NY 11794 USA SUNY Stony Brook T-19-090Stony Brook NY USA 11794 NY 11794 USA
Citazione:
E.E. Smouha et al., "Computer-aided virtual surgery for congenital aural artresia", OTOL NEURO, 22(2), 2001, pp. 178-182

Abstract

Hypothesis: Computer-enhanced three-dimensional (3D) computed tomography (CT) provides accurate spatial representation of the complex surgical anatomy of congenitally atretic ears, and is superior to conventional CT for surgical planning. Background: The surgical repair of congenital aural atresia is challenging. Conventional CT, routinely used for surgical planning, is limited in its ability to represent spatial relationships between important structures. Because of the lack of density differences between bony structures in the ear, 3D CT has thus far been useful for representing surface contour but not internal anatomy. Methods: A two-level segmentation scheme was developed to distinguish structures in the temporal bone. 3D CT reconstructions of congenital ears were produced with a high-resolution helical scanner. An interactive tool was used to mark the ossicles and facial nerve. The segmentation scheme was used to color-enhance the ossicles and otic capsule, and render the surrounding bone translucent. "Virtual surgery" was then performed by subtracting a cylindrical volume of bone lateral to the atresia plate. The enhanced 3D CT reconstructions were correlated with intraoperative video recordings. Results: In four congenital ears, computer-enhanced 3D CT was highly predictive of the actual anatomy. Surgery was avoided in two anatomically unfavorable cases. Conclusion: Computer-enhanced 3D CT is a major advance over conventional CT for demonstrating the complex spatial relationships in congenitally atretic ears.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 17:59:32