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Radiation Oncology
Published in: Radiation Oncology 1/2019

Open Access 01-12-2019 | Research

Development of a semi-customized tongue displacement device using a 3D printer for head and neck IMRT

Authors: Chae-Seon Hong, Dongryul Oh, Sang Gyu Ju, Yong Chan Ahn, Cho Hee Na, Dong Yeol Kwon, Cheol Chong Kim

Published in: Radiation Oncology | Issue 1/2019

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Abstract

Purpose

To reduce radiation doses to the tongue, a patient-specific semi-customized tongue displacement device (SCTDD) was developed using a 3D printer (3DP) for head and neck (H&N) radiation therapy (RT). Dosimetric characteristics of the SCTDD were compared with those of a standard mouthpiece (SMP).

Materials and methods

The SCTDD consists of three parts: a mouthpiece, connector with an immobilization mask, and tongue displacer, which can displace the tongue to the contralateral side of the planning target volume. Semi-customization was enabled by changing the thickness and length of the SCTDD. The instrument was printed using a 3DP with a biocompatible material. With the SCTDD and SMP, two sets of planning computed tomography (CT) and tomotherapy plans were obtained for seven H&N cancer patients. Dosimetric and geometric characteristics were compared.

Results

Using the SCTDD, the tongue was effectively displaced from the planning target volume without significant tongue volume change compared to the SMP. The median tongue dose was significantly reduced (29.6 Gy vs. 34.3 Gy). The volumes of the tongue receiving a dose of 15 Gy, 30 Gy, 35 Gy, 45 Gy, and 60 Gy were significantly lower than using the SMP.

Conclusion

The SCTDD significantly decreased the radiation dose to the tongue compared to the SMP, which may potentially reduce RT-related tongue toxicity.
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Metadata
Title
Development of a semi-customized tongue displacement device using a 3D printer for head and neck IMRT
Authors
Chae-Seon Hong
Dongryul Oh
Sang Gyu Ju
Yong Chan Ahn
Cho Hee Na
Dong Yeol Kwon
Cheol Chong Kim
Publication date
01-12-2019
Publisher
BioMed Central
Published in
Radiation Oncology / Issue 1/2019
Electronic ISSN: 1748-717X
DOI
https://doi.org/10.1186/s13014-019-1289-x

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