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Simultaneous, laser-sintered, three-dimensional modelling of bony structures and soft tissue for surgical navigation of extended cholesteatoma

Published online by Cambridge University Press:  19 November 2009

M Suzuki ,
Y Ogawa ,
T Hasegawa ,
S Kawaguchi ,
K Yukawa ,
N Nishiyama  and
S Shimizu
M Suzuki*
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
Y Ogawa
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
T Hasegawa
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
S Kawaguchi
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
K Yukawa
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
N Nishiyama
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
S Shimizu
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan
*
Address for correspondence: Dr Mamoru Suzuki, Department of Otolaryngology, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, Japan160-0023. Fax: +81 3 3346 9275 E-mail: otosuzu@tokyo-med.ac.jp
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Abstract

Aim:

To examine the usefulness of a three-dimensional model for surgical navigation of cholesteatoma.

Materials and method:

A three-dimensional model was prototyped using selective laser sintering. Based on detailed computed tomography data, powder layers were laser-fused and accumulated to create a three-dimensional structure. The computed tomography threshold was adjusted to simultaneously replicate bony structures and soft tissues.

Results:

The cholesteatoma, major vessels and bony structures were well replicated. This laser-sintered model was used to aid surgery for recurrent cholesteatoma. The cholesteatoma, which extended from the hypotympanum through the styloid process sheath and the internal carotid artery sheath, was removed safely via a minimal skin incision.

Conclusion:

The laser-sintered model was useful for surgical planning and navigation in a cholesteatoma case involving complex bony structures and soft tissue.

Keywords

Temporal BoneComputer SimulationOtologic Surgical ProceduresCholesteatoma
Type
Clinical Records
Information
The Journal of Laryngology & Otology , Volume 124 , Issue 5 , May 2010 , pp. 564 - 568
Copyright
Copyright © JLO (1984) Limited 2009

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References

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