Detection of pion-induced radioactivity by autoradiography and positron emission tomography.
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.
Shirato
H
H
Cancer Control Agency of British Columbia, Vancouver, Canada.
Harrison
R
R
Kornelsen
R O
RO
Lam
G K
GK
Gaffney
C C
CC
Goodman
G B
GB
Grochowski
E
E
Pate
B
B
D001345:Autoradiography; D004601:Elementary Particles; D008651:Mesons; D011874:Radiometry / Q000379:methods; D011882:Radiotherapy, High-Energy; D013679:Technology, Radiologic; D014055:Tomography, Emission-Computed