A study for the dosimetric evaluation of rotational setup error for lung stereotactic body radiation therapy
| Autor: | Minsik Lee, Ulrich W. Langner, Sina Mossahebi, Karl Prado, Byong Yong Yi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Lung
medicine.diagnostic_test business.industry Stereotactic body radiation therapy Computed tomography Rotation 030218 nuclear medicine & medical imaging Conformity index 03 medical and health sciences Dose limit 0302 clinical medicine medicine.anatomical_structure Oncology Couch angle 030220 oncology & carcinogenesis Organ at risk medicine Radiology Nuclear Medicine and imaging Nuclear medicine business |
| Zdroj: | Journal of Radiotherapy in Practice. 17:422-426 |
| ISSN: | 1467-1131 1460-3969 |
| Popis: | PurposeTo investigate the necessity of rotational shifts by considering dosimetric impact of rotational errors on stereotactic body radiation therapy (SBRT).Materials and methods20 lung patients with the lesion size ResultsNo significant dosimetric differences were observed in target coverage. For all of the cases up to 5° in any couch angle dose differences of D99 and D95 were V20 differences of the ipsilateral and the total lungs were less than 0·4%.ConclusionIt has been found to be unnecessary to perform rotational shifts up to 5° for lung SBRT treatments; the translational shift is sufficient for the cases used in this study. This method may be applied and tested after planning and before treatment initiation to rule out exceptionally extreme cases. |
| Databáze: | OpenAIRE |
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