"A team headed up by Karol Lang at The University of Texas at Austin is investigating the use of positron emission tomography (PET) to help in the transition to clinical FLASH therapy [a radiotherapy and emerging treatment technique in which radiation is delivered extremely rapidly at ultrahigh dose rates and that offers the potential to spare healthy tissues while effectively killing cancer cells]," reports Physics World.
Read the full report on how researchers have demonstrated the first ever recorded PET imaging and dosimetry of a proton FLASH beam in Physics World:
https://physicsworld.com/a/in-beam-pet-provides-the-first-glimpse-of-a-proton-flash-beam/