[Application of PET-LINAC in Biology-guided Radiotherapy]

Area of Science:

• Oncology
• Medical Physics
• Radiotherapy Technology

Background:

• Biology-guided radiotherapy (BgRT) integrates Positron Emission Tomography-Computed Tomography (PET-CT) with a linear accelerator (LINAC) for advanced cancer treatment.
• The core innovation involves using PET signals from tumor tracers for real-time tracking and precise guidance of radiation beamlets.

Approach:

• This review examines the technical aspects of BgRT systems, focusing on the integration of PET-CT and LINAC technologies.
• The study analyzes the complexities in hardware, software algorithms, system integration, and clinical workflow associated with BgRT.

Key Points:

• BgRT offers potential for enhanced treatment accuracy by enabling real-time adaptation of radiation delivery based on biological imaging.
• The RefleXion Medical BgRT system represents a significant advancement, though its PET-guided radiotherapy function remains under development.
• Challenges include the intricate system design, sophisticated algorithms, and the need for optimized clinical protocols.

Conclusions:

• BgRT presents a novel paradigm in radiotherapy, merging anatomical and biological imaging for potentially more effective cancer treatment.
• Further research and development are crucial to overcome the technical and clinical hurdles before widespread adoption of PET-guided radiotherapy.