Chapter 1. Introduction and History of SBRT -- Chapter 2. Radiobiology of Stereotactic Ablative Radiation Therapy -- Chapter 3. Physics of SBRT -- Chapter 4. Quality Assurance in SBRT -- Chapter 5. Patient Immobilization, IGRT, Respiratory Motion Management -- Chapter 6. Dose Calculation algorithm -- Chapter 7. Treatment Planning for SBRT -- Chapter 8. Lung: peripheral -- Chapter 9. Lung: central -- Chapter 10. Lung: toxicity -- Chapter 11. Liver -- Chapter 12. Kidney -- Chapter 13. Spine -- Chapter 14. Oligo mets -- Chapter 15. Other Indications -- Chapter 16. Vero4DRT System -- Chapter 17. Real Time Tracking Radiotherapy (RTRT) , SyncTrax -- Chapter 18. Cyberknife -- Chapter 19. Tomotherapy -- Chapter 20. MRI-LINIAC: Elekta Unity -- Chapter 21. MRI-linac: ViewRay MRIdian -- Chapter 22. Future of SBRT with AI (Artificial Intelligence) -- Chapter 23. Future of SBRT with photon & particle.