Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
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Customized 3D Printed Bolus for Breast Reconstruction for Modified Radical Mastectomy (MRM)

  • Ha, Jin-Suk (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) ;
  • Jung, Jae Hong (Department of Radiation Oncology, College of Medicine, Soonchunhyang University) ;
  • Kim, Min-Joo (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, The Catholic University of Korea) ;
  • Jeon, Mi Jin (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) ;
  • Jang, Won Suk (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) ;
  • Cho, Yoon Jin (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) ;
  • Lee, Ik Jae (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) ;
  • Kim, Jun Won (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) ;
  • Suh, Tae Suk (Department of Biomedical Engineering and Research Institute of Biomedical Engineering, The Catholic University of Korea)
  • Received : 2016.11.10
  • Accepted : 2016.12.20
  • Published : 2016.12.31
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Abstract

We aim to develop the breast bolus by using a 3D printer to minimize the air-gap, and compare it to commercial bolus used for patients undergoing reconstruction in breast cancer. The bolus-shaped region of interests (ROIs) were contoured at the surface of the intensity-modulated radiation therapy (IMRT) thorax phantom with 5 mm thickness, after which the digital imaging and communications in mdicine (DICOM)-RT structure file was acquired. The intensity-modulated radiation therapy (Tomo-IMRT) and direct mode (Tomo-Direct) using the Tomotherapy were established. The 13 point doses were measured by optically stimulated luminescence (OSLD) dosimetry. The measurement data was analyzed to quantitatively evaluate the applicability of 3D bolus. The percentage change of mean measured dose between the commercial bolus and 3D-bolus was 2.3% and 0.7% for the Tomo-direct and Tomo-IMRT, respectively. For air-gap, range of the commercial bolus was from 0.8 cm to 1.5 cm at the periphery of the right breast. In contrast, the 3D-bolus have occurred the air-gap (i.e., 0 cm). The 3D-bolus for radiation therapy reduces the air-gap on irregular body surface that believed to help in accurate and precise radiation therapy due to better property of adhesion.

Keywords

References

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