Title :
On-line monitoring and PET imaging of proton radiotherapy beams
Author :
Litzenberg, D.W. ; Bajema, J.F. ; Becchetti, F.D. ; Brown, J.A. ; Raymond, R.S. ; Roberts, D.A. ; Caraher, J. ; Hutchins, G. ; Ronningen, R. ; Smith, R. ; Abbott, M.
Author_Institution :
Michigan Univ., Ann Arbor, MI, USA
Abstract :
Preliminary experiments have been performed which indicate that online localization of proton radiotherapy beams in tissue is feasible. Using a two-dimensional array of online sodium iodide (NaI) detectors it is possible to perform real-time monitoring of the production of positron emitting isotopes (mainly 11C, 13N, and 15O) as a function of depth with pulsed proton beams of sufficiently low current. A commercial PET (positron emission tomography) scanner was used off-line to verify range and activity measurements. Results of range measurements using the two techniques are in good agreement with the calculated range, to within their respective resolutions
Keywords :
computerised tomography; radiation therapy; radioisotope scanning and imaging; 2D detector array; 11C; 13N; 15O; NaI; PET imaging; nuclear medicine; online localization; online monitoring; positron emission tomography; positron emitting isotopes production; proton radiotherapy beams; pulsed proton beams; real-time monitoring; Cyclotrons; Detectors; In vivo; Molecular beams; Monitoring; Neoplasms; Particle beams; Physics; Positron emission tomography; Protons;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301095
