Earticle

초록

영어

Background: We analyzed changes in the doses, structure volumes, and dose-volume histograms (DVHs) when data were transferred from one commercial treatment planning system (TPS) to another commercial TPS. Materials and Methods: A total of 22 volumetric modulated arc therapy (VMAT) plans for nasopharyngeal cancer were generated with the Eclipse system using 6-MV photon beams. The computed tomography (CT) images, dose distributions, and structure information, including the planning target volume (PTV) and organs at risk (OARs), were transferred from the Eclipse to the MRIdian system in digital imaging and communications in medicine (DICOM) format. Thereafter, DVHs of the OARs and PTVs were generated in the MRIdian system. The structure volumes, dose distributions, and DVHs were compared between the MRIdian and Eclipse systems. Results and Discussion: The dose differences between the two systems were negligible (average matching ratio for every voxel with a 0.1% dose difference criterion = 100.0 ± 0.0%). However, the structure volumes significantly differed between the MRIdian and Eclipse systems (volume differences of 743.21 ± 461.91% for the optic chiasm and 8.98 ± 1.98% for the PTV). Compared to the Eclipse system, the MRIdian system generally overestimated the structure volumes (all, p < 0.001). The DVHs that were plotted using the relative structure volumes exhibited small differences between the MRIdian and Eclipse systems. In contrast, the DVHs that were plotted using the absolute structure volumes showed large differences between the two TPSs. Conclusion: DVH interpretation between two TPSs should be performed using DVHs plotted with the absolute dose and absolute volume, rather than the relative values.

목차

ABSTRACT
 Introduction
 Materials and Methods
  1. Patient data and planning
  2. Data transfer from the Eclipse to the MRIdian system
  3. Evaluation of doses, volumes, and dose-volume histograms
 Results and Discussion
  1. Dose differences
  2. Volume differences
  3. Dose-volume histogram differences
 Conclusion
 Acknowledgements
 References

키워드

저자

• Jung-in Kim [ Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea, Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea, Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea ]
• Ji Hye Han [ Department of Physics, Ewha Womans University, Seoul, Korea ]
• Chang Heon Choi [ Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea, Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea, Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea ]
• Hyun Joon An [ Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea, Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea, Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea ]
• Hong-Gyun Wu [ Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea, Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea, Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea, Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea ]
• Jong Min Park [ Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea, Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea, Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea, Robotics Research Laboratory for Extreme Environments, Advanced Institutes of Convergence Technology, Suwon, Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629