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[Respiration-gated radiotherapy: current techniques and potential benefits].
1Département d'oncologie-radiothérapie, institut Curie, 26, rue d'Ulm, 75005 Paris, France. philippe.giraud@curie.net
Summary
Respiration-gated radiotherapy improves tumor targeting for lung, breast, and liver cancers by reducing motion. This technique enhances treatment precision and aims to decrease side effects for organs at risk.
Area of Science:
- Radiation Oncology
- Medical Physics
Background:
- Respiratory motion significantly impacts radiotherapy precision for thoracic and upper abdominal tumors.
- Current radiotherapy techniques like 3D-CRT and IMRT demand greater accuracy to mitigate motion-related inaccuracies.
Purpose of the Study:
- To review and evaluate the impact of respiration-gated radiotherapy techniques.
- To describe commonly used gating methods and analyze published clinical reports.
Main Methods:
- Overview of breath-hold techniques (active and passive).
- Description of respiration-synchronized gating using external devices.
- Review of clinical reports from medical centers investigating these techniques.
Main Results:
- Respiration gating shows potential for improved irradiation conformity and reduced complications.
- Early results in lung and liver cancer patients require further confirmation.
- Ongoing research addresses remaining physical, technical, and physiological questions.
Conclusions:
- Respiration-gated radiotherapy offers a promising approach to manage respiratory motion in cancer treatment.
- Further clinical validation and research are necessary to fully establish its benefits and address technical challenges.