Twyla R. Willoughby

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About

Twyla R. Willoughby is a leading medical physicist whose research has significantly advanced the precision and safety of radiosurgery and proton therapy. Her work focuses on developing and refining technologies for stereotactic radiosurgery, particularly for treating intracranial and base-of-skull tumors, as well as improving real-time monitoring in prostate cancer therapy. A key contribution is her investigation into the effectiveness of base-of-skull immobilization systems in compact proton therapy settings, where she analyzed inter- and intra-fractional uncertainties using 6 degrees-of-freedom robotic couches—work that has enhanced daily repositioning accuracy and treatment reliability. Her widely cited 2011 review, "Radiosurgery technology development and use" (13 citations), traces the evolution of Gamma Knife and linear accelerator radiosurgery, underscoring her role in documenting and shaping clinical adoption. Additionally, her 2007 study on prostate margins for real-time correction strategies (2 citations) addresses critical challenges in adaptive radiotherapy. Through these contributions, Willoughby has helped bridge technological innovation with clinical practice, ensuring more precise, patient-specific treatments. Her work remains foundational for researchers and clinicians seeking to optimize radiosurgical and proton therapy outcomes.