Breath‐holding treatments in tomotherapy with active breathing coordinator: A first case report

We have shown that BH treatment is feasible using an upgraded tomotherapy machine (Radixact v3.5) with Active Breathing Coordinator. Our proposed workflow includes an in-house visual system that allows patients to visualize their breathing patterns on-screen. This technique provides a practical solution for patients with thoracic and abdominal malignancies, addressing respiratory motion while minimizing radiation exposure for certain diseases.