Evaluation of Setup Error and Adequate Setup Margins in Patients with Prostate Cancer Treated by IMRT and Fixed in the Prone Position Using a Set of Immobilization Devices
Autor: | Yoshinori Norihisa, Shinsuke Yano, Toru Takakura, Takahiro Fujimoto, Kana Matsubara, Takashi Mizowaki, Kenji Takayama, Manabu Nakata, Takashi Okada |
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Rok vydání: | 2006 |
Předmět: |
Male
Restraint Physical Reproducibility medicine.medical_specialty business.industry medicine.medical_treatment Margin of error Prostatic Neoplasms Reproducibility of Results General Medicine medicine.disease Set (abstract data type) Radiation therapy Prone position Prostate cancer Margin (machine learning) Prone Position Humans Medicine In patient Medical physics Radiotherapy Intensity-Modulated business Biomedical engineering |
Zdroj: | Japanese Journal of Radiological Technology. 62:130-135 |
ISSN: | 1881-4883 0369-4305 |
DOI: | 10.6009/jjrt.62.130 |
Popis: | Purpose: Positional reproducibility in patients with prostate cancer fixed in the prone position with a set of immobilization devices for external-beam intensity-modulated radiation therapy (IMRT) was evaluated. In addition, the adequacy of our positional error reduction strategy and current planning target volume (PTV) margins was also evaluated. Results: Systematic error was corrected by the positional correction that we executed at the first stage of irradiation. The setup margin that we had calculated was 1.1 mm in the L-R direction, 1.3 mm in the A-P direction, and 2.7 mm in the C-C direction. Conclusion: We determined that the effectiveness of the method of correcting the error margin and the setup accuracy of the fixed method were well maintained. |
Databáze: | OpenAIRE |
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