Real-Time Motion Management for a Small Target in the Right Lower Lobe With Large Tumor Motion Using Radixact...

Accurate real-time motion tracking is crucial for effective stereotactic body radiotherapy (SBRT) in lung cancer patients, particularly those with significant tumor motion. Techniques to reduce tumor motion, such as abdominal compression, breath hold, or respiratory gating, are often uncomfortable or result in longer treatment times. The Radixact Synchrony system (Accuray Inc., Sunnyvale, California, United States) enables continuous adaptation to tumor motion without the need for implanted fiducials. We report the case of a patient with a small target in the right lower lobe (RLL) with large tumor motion managed using Radixact Synchrony, highlighting treatment planning, delivery accuracy, and clinical outcomes.