title: Detection of pion-induced radioactivity by autoradiography and positron emission tomography.
abstract: An autoradiographic technique incorporating a new imaging system was used to detect pion-induced radioactivity in Plexiglass and the results were compared with aluminium activation and PET imaging. The activity distribution in the region of the pion-stopping peak was similar in all three cases. Another large signal in the entrance region due to in-flight interactions [12C(pi-, pi- n) 11C] was detected by autoradiography and by PET but was not reflected in the aluminium activation measurements. This new technique is capable of defining the stopping region in phantoms with a better resolution than PET scanning and is useful as a complementary technique to other methods of pion dosimetry.
authors.affiliation: Cancer Control Agency of British Columbia, Vancouver, Canada.
authors.forename: H
authors.initials: H
authors.lastname: Shirato
authors.forename: R
authors.initials: R
authors.lastname: Harrison
authors.forename: R O
authors.initials: RO
authors.lastname: Kornelsen
authors.forename: G K
authors.initials: GK
authors.lastname: Lam
authors.forename: C C
authors.initials: CC
authors.lastname: Gaffney
authors.forename: G B
authors.initials: GB
authors.lastname: Goodman
authors.forename: E
authors.initials: E
authors.lastname: Grochowski
authors.forename: B
authors.initials: B
authors.lastname: Pate
mesh_terms: D001345:Autoradiography; D004601:Elementary Particles; D008651:Mesons; D011874:Radiometry / Q000379:methods; D011882:Radiotherapy, High-Energy; D013679:Technology, Radiologic; D014055:Tomography, Emission-Computed