title: Neutron flux mapping inside a cubic and a head PMMA phantom using indirect neutron radiography.
abstract: This study aims to measure the two-dimensional (2D) neutron spatial distribution inside a cubic and a head PMMA phantom for the purpose of further comparison with the treatment planning. The measurements were made by using the indirect neutron radiography (INR), which utilized a thin copper foil and the imaging plate. The developed image provides satisfactory spatial resolution and very low statistical error (< 1%). As to the time cost, the whole procedure normally takes less than 3 h. The result shows that the indirect neutron radiography can be a quick and reliable method to provide a 2D neutron spatial distribution inside a phantom.
authors.affiliation: Engineering and System Science Department, National Tsing Hua University, Taiwan.
authors.forename: Pi-En
authors.initials: PE
authors.lastname: Tsai
authors.forename: Yuan-Hao
authors.initials: YH
authors.lastname: Liu
authors.forename: Chun-Kai
authors.initials: CK
authors.lastname: Huang
authors.forename: Hong-Ming
authors.initials: HM
authors.lastname: Liu
authors.forename: Shiang-Huei
authors.initials: SH
authors.lastname: Jiang
mesh_terms: D016754:Boron Neutron Capture Therapy / Q000295:instrumentation / Q000706:statistics & numerical data*; D003300:Copper; D005214:Fast Neutrons / Q000627:therapeutic use*; D006257:Head; D006801:Humans; D018499:Linear Energy Transfer; D009369:Neoplasms / Q000532:radiotherapy; D019047:Phantoms, Imaging / Q000706:statistics & numerical data*; D019904:Polymethyl Methacrylate; D011880:Radiotherapy Planning, Computer-Assisted / Q000706:statistics & numerical data*; D013624:Taiwan
chemical_list: D003300:Copper; D019904:Polymethyl Methacrylate