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About

Steven Chang is a pioneering figure in the field of stereotactic radiosurgery, renowned for his work in advancing frameless, image-guided radiation technology. His primary research focuses on the clinical application and accuracy of the CyberKnife system, a robotic radiosurgical platform that treats both intracranial and extracranial tumors without the need for a rigid head frame. Chang’s seminal 2003 study, which has garnered over 130 citations, provided a critical analysis of the CyberKnife’s total system accuracy, establishing a benchmark for precision in frameless radiosurgery. This work laid the foundation for broader clinical adoption and inspired subsequent innovations in non-invasive tumor treatment. Beyond oncology, Chang has made notable contributions to pain management, particularly in treating trigeminal neuralgia. His 2006 study on stereotactic radiosurgery using CT cisternography and non-isocentric planning, along with a 2004 report on pain relief patterns, demonstrated the CyberKnife’s efficacy as a non-invasive alternative for this debilitating condition. Though his early 1999 paper on clinical and radiographic results with the CyberKnife has fewer citations, it remains a foundational reference in the field. Chang’s work has been instrumental in transforming radiosurgery from a frame-based to a frameless paradigm, improving patient comfort and expanding treatment accessibility.