Higher Dose Volumes May Be Better for Evaluating Radiation Pneumonitis in Lung Proton Therapy Patients Compared With Traditional Photon-Based Dose Constraints oleh Wendy B. Harris, PhD, Wei Zou, PhD, Chingyun Cheng, PhD, Varsha Jain, MD, PhD, Boon-Keng Kevin Teo, PhD, Lei Dong, PhD, Steven J. Feigenberg, MD, Abigail T. Berman, MD, MSCE, William P. Levin, MD, Keith A. Cengel, MD, PhD, Shannon E. O’Reilly, PhD