A prospective study of supine versus prone positioning and whole-body thermoplastic mask fixation for craniospinal radiotherapy in adult patients
| Autor: | László Thurzó, Emese Fodor, Zoltán Nagy, Adrienn Cserháti, Virág Vincze, Zoltán Varga, Katalin Hideghéty, Anikó Maráz, Erika Szántó |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male Organs at Risk medicine.medical_specialty Supine position Radiotherapy Setup Errors Klinikai orvostudományok Craniospinal Irradiation Craniospinal radiotherapy Surveys and Questionnaires mental disorders Prone Position Supine Position medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies Prospective cohort study Fixation (histology) Adult patients business.industry Radiotherapy Planning Computer-Assisted Masks Radiotherapy Dosage Orvostudományok Hematology Middle Aged Surgery Prone position Oncology Patient Satisfaction Female Cranial Irradiation Radiotherapy Conformal Nuclear medicine business Craniospinal |
| Zdroj: | Radiotherapy and Oncology. 102:214-218 |
| ISSN: | 0167-8140 |
| DOI: | 10.1016/j.radonc.2011.07.003 |
| Popis: | Purpose To evaluate neuroaxis irradiation for adults in the supine position using head body thermoplastic mask fixation, from the aspects of dose distribution, patient comfort and set-up accuracy. Methods and materials Nine of the 12 adult patients were positioned for craniospinal axis irradiation in both prone and supine positions. After mask fixation and planning CTs in both positions, a questionnaire relating to the comfort was completed. The doses to the target and to the organs at risk of the 3D conformal plans in the supine and prone positions were compared. Portal images of all 12 patients irradiated in the supine position were evaluated, the van Herk formulas being used to calculate the systemic and random errors. Results No significant difference was found between the prone and supine positions target coverage, the dose homogeneity and the dose to the organs at risk. The supine position was considered more comfortable by the patients (scores of 2.8 versus 4.29), with a vector random error of 3.27mm, and a systematic error of 0.32mm. The largest random set-up error was observed in the lateral direction: 4.83mm. Conclusions The more comfortable supine position is recommended for craniospinal irradiation in adult patients. Whole-body thermoplastic mask immobilization provides excellent repositioning accuracy. |
| Databáze: | OpenAIRE |
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