Strategies for biologic image-guided dose escalation: a review

Area of Science:

• Radiation oncology
• Medical imaging
• Cancer therapy

Background:

• Increasing interest in integrating functional and molecular data from 3D tumor imaging into radiotherapy.
• Need to identify radioresistant tumor regions for targeted dose escalation.
• Developing personalized radiation dose prescription and delivery strategies is crucial.

Purpose of the Study:

• To review strategies for biologic image-guided dose escalation in intensity-modulated radiation therapy (IMRT).
• To discuss biologic imaging modalities, derived images, and target volume delineation methods.
• To address dose escalation strategies, treatment delivery techniques, and plan evaluation.

Main Methods:

• Review of current literature on biologic imaging in radiotherapy.
• Discussion of various imaging modalities (e.g., PET, MRI) and image analysis techniques.
• Analysis of dose escalation strategies and intensity-modulated radiation therapy (IMRT) delivery.

Main Results:

• Biologic imaging offers potential for identifying radioresistant subvolumes.
• Image-guided dose escalation strategies can optimize radiation delivery.
• Response monitoring during treatment is essential for adaptive radiotherapy.

Conclusions:

• Biologic image-based dose escalation shows promise for personalized radiotherapy.
• Further research is needed to integrate these advanced imaging techniques into routine clinical practice.
• Standardization of methods for target delineation and dose prescription is required.