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John Stephen Ginn

Assistant Professor of Radiation Oncology
Radiation Oncology

Overview


External beam treatment planning for breast and lung cancer radiation therapy; Applications of MRI in radiation oncology; Machine learning for automatic segmentation and motion management during radiation therapy.

Current Appointments & Affiliations


Assistant Professor of Radiation Oncology · 2022 - Present Radiation Oncology, Clinical Science Departments
Member of the Duke Cancer Institute · 2023 - Present Duke Cancer Institute, Institutes and Centers

Recent Publications


Feasibility of Stereotactic Body Radiation Therapy for Pancreatic Tumors Abutting Organs at Risk Using Magnetic Resonance Guided Adaptive Radiation Therapy.

Journal Article Int J Radiat Oncol Biol Phys · April 2, 2025 PURPOSE: Stereotactic body radiation therapy (SBRT) has historically been contraindicated in patients with tumors abutting gastrointestinal (GI) organs due to risk of toxicity. Adaptive magnetic resonance (MR) guided SBRT (MRgSBRT) is an increasingly used ... Full text Link to item Cite

Real-time 3D MR guided radiation therapy through orthogonal MR imaging and manifold learning.

Journal Article Med Phys · March 2025 BACKGROUND: In magnetic resonance image (MRI)-guided radiotherapy (MRgRT), 2D rapid imaging is commonly used to track moving targets with high temporal frequency to minimize gating latency. However, anatomical motion is not constrained to 2D, and a portion ... Full text Link to item Cite

Uncertainty quantification in multi-parametric MRI-based meningioma radiotherapy target segmentation.

Journal Article Front Oncol · 2025 PURPOSE: This work investigates the use of a spherical projection-based U-Net (SPU-Net) segmentation model to improve meningioma segmentation performance and allow for uncertainty quantification. METHODS: A total of 76 supratentorial meningioma patients tr ... Full text Link to item Cite
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Education, Training & Certifications


University of California, Los Angeles · 2019 Ph.D.
University of California, Los Angeles · 2017 M.S.
Wheaton College · 2015 B.S.