Detailing multi-modality image co-registration and radiobiology, this book discusses state-of-the-art strategies for patient simulation and immobilization, treatment planning, and dose calculation algorithms in stereotactic radiosurgery (SRS) and stereotactic radiotherapy (SRT). It presents a comprehensive treatment of the field¿s history, major technological developments, clinical status, and practical considerations. The three main sections of the book cover delivery systems, precision patient positioning and immobilization, and treatment planning and dosimetry. The final section gives an overview of clinical outcomes and future directions for the field.