Fig. 5From: Clinical trials for treating recurrent head and neck cancer with boron neutron capture therapy using the Tsing-Hua Open Pool Reactor[18]F-BPA PET images of a patient with recurrent nasopharyngeal cancer in the auditory canal after two courses of radical radiotherapy and surgery. a Before boron neutron capture therapy (BNCT), the bright area anterior to the cerebellum showed the recurrent tumor (arrow head). b Five months after two applications of BNCT, the tumor in the auditory canal shrank completelyBack to article page