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[In room delivered doses during image-guided radiotherapy courses]
G Delpon1, S Chiavassa, S Supiot
1Service de physique médicale, centre René-Gauducheau, institut de cancérologie de l'Ouest, Saint-Herblain, France. gregory.delpon@ico.unicancer.fr
Summary
Image-guided radiotherapy uses in-room imaging to enhance patient positioning accuracy. Evaluating and minimizing radiation doses from these X-ray imaging procedures is crucial for patient safety and treatment efficacy.
Area of Science:
- Medical Physics
- Radiotherapy
- Diagnostic Imaging
Context:
- Image-guided radiotherapy (IGRT) enhances treatment accuracy through in-room imaging.
- X-ray imaging devices used in IGRT deliver additional radiation doses to patients.
- Accurate evaluation and reporting of these doses are essential.
Purpose:
- To review organ-absorbed doses from in-room imaging in IGRT.
- To adapt the as low as reasonably achievable (ALARA) principles to IGRT.
- To highlight the importance of dose justification and optimization in IGRT.
Summary:
- Studies have investigated organ doses from in-room imaging, particularly for prostate cancer.
- The ALARA concept is applied to IGRT, focusing on dose reduction.
- Key considerations include justification of imaging for patient outcomes and optimization of imaging parameters.
Impact:
- Provides a framework for managing radiation exposure in IGRT.
- Informs strategies for minimizing patient dose while maintaining image quality.
- Impacts patient treatment, staff organization, and radiation safety protocols.
