Session Item

FLASH is radiotherapy delivered with ultra-high dose rates that are hundreds of times higher than in conventional radiotherapy. It has received massive interest since pre-clinical experiments have shown a preferential sparing of healthy tissue with maintained effects on tumors. Most experiments have used electron beams with shallow treatment depths of a few centimeters. FLASH dose rates can also be obtained with high energy proton beams at clinical proton facilities, which allows treatment in any relevant tumor depth. In this lecture, a brief overview of proton FLASH will be given including realization of FLASH dose rates with proton beams, proton FLASH dosimetry, treatment planning and pre-clinical studies at the Danish Center for Particle Therapy.