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Rapid-prototyped temporal bone and inner-ear models replicated by adjusting computed tomography thresholds

Published online by Cambridge University Press:  26 March 2007

M Suzuki ,
A Hagiwara ,
Y Ogawa  and
H Ono
M Suzuki*
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Tokyo, Japan
A Hagiwara
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Tokyo, Japan
Y Ogawa
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Tokyo, Japan
H Ono
Affiliation:
Ono & Co Ltd, Tokyo, 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

Purpose:

This study aimed to investigate the validity of adjusting computed tomography thresholds in order to replicate a temporal bone model suitable for dissection training and education.

Materials and methods:

A simulated three-dimensional model of a human temporal bone was prototyped using selective laser sintering. The powder layers were laser-fused, based on detailed computed tomography data, and accumulated to create a three-dimensional structure. The computed tomography threshold value of the stapes was modified on standard triangular language file in order to replicate the stapes. The intensity value was determined to select the fluid lumen of the inner ear and the bone surface, in order to replicate the inner ear.

Results:

The model could be shaved, using surgical instruments, in the same manner as during real surgery. The stapes could be reproduced, making this model even more realistic than a previous version. The inner ear was recreated, along with the surrounding bony wall and the ossicles.

Conclusion:

This model facilitates dissection training and easy understanding of the relation between the labyrinth and the surrounding structures.

Keywords

Temporal BoneInner EarModelSimulationComputed Tomography
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 121 , Issue 11 , November 2007 , pp. 1025 - 1028
Copyright
Copyright © JLO (1984) Limited 2007

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References

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