Liyong Lin, PhD, FAAPM, DABR, is an Adjunct Associate Professor. An ABR board certified medical physicist, Dr. Lin's expertise includes commissioning, quality assurance, optimization and Monte Carlo characterization of pencil beam scanning proton therapy systems. He chairs AAPM TG349, NRG Oncology proton SBRT workgroup and PTCOG lung FLASH treatment guideline workgroup.