title: Prompt gamma ray spectrometry for in vivo measurement of boron-10 concentration in rabbit brain tissue.
abstract: Boron-10 concentrations in the brain of live rabbits were measured by prompt gamma ray spectrometry at intervals over a 24-hour period. Boron-10 concentrations in the blood and cerebrospinal fluid (CSF) were also measured. Animals were killed at each interval to obtain brain tissues to measure the boron-10 concentration in the brainstem, cerebral cortex, cerebellar cortex, and basal ganglia, as well as the whole brain. Boron-10 concentrations in the live brain did not differ significantly from those measured in whole brain tissue. Boron-10 concentrations in the blood were much higher than in the brain at each interval after injection. These boron-10 concentrations showed a similar pattern of initial rapid decrease, followed by a more gradual decrease. There was little boron-10 present in the CSF. The brainstem contained a significantly larger concentration of boron-10 than the other tissues. Prompt gamma ray spectrometry has the potential for direct measurement of boron-10 concentrations in the brain of patients undergoing boron neutron capture therapy.
authors.affiliation: Department of Neurological Surgery, University of Tokushima, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Mukai
authors.forename: Y
authors.initials: Y
authors.lastname: Nakagawa
authors.forename: K
authors.initials: K
authors.lastname: Matsumoto
mesh_terms: D000818:Animals; D001896:Boron Compounds / Q000032:analysis* / Q000097:blood / Q000134:cerebrospinal fluid; D016754:Boron Neutron Capture Therapy; D001923:Brain Chemistry; D011817:Rabbits; D013051:Spectrometry, Gamma
chemical_list: D001896:Boron Compounds