Title :
Development of a 2D scintillating fiber detector for proton radiography
Author :
Koybasi, Ozhan ; Goulet, Mathieu ; Depauw, Nick ; Gingras, Lauren ; Archambault, Louis ; Beaulieu, Luc ; Seco, Jesus
Author_Institution :
Med. Sch., Harvard Univ., Boston, MA, USA
fDate :
Oct. 27 2012-Nov. 3 2012
Abstract :
Proton therapy offers the advantages of a superior target dose conformality and lower integral dose over the conventional photon therapy. However, range uncertainties associated with dose calculation approximations, tumor motion, setup variations, etc., present a major concern in proton therapy. In order to address this issue, we are developing a 2 mm resolution scintillating fiber detector with fibers arranged such that they form a 2D matrix that allows the determination of x- and y-position of the proton. By implementing a scheme consisting only of one detector positioned in front of the patient and another detector behind the patient, we can potentially realize a real-time measurement of proton position, direction, and range/energy simultaneously to reconstruct proton radiographs, also eliminating the need to use an additional bulky range telescope or calorimeter which is not appropriate for in vivo clinical use.
Keywords :
radiation therapy; radiography; scintillation counters; tumours; 2D matrix; 2D scintillating fiber detector; conventional photon therapy; proton direction; proton energy; proton position real-time measurement; proton radiography; proton range; proton therapy; proton x-position determination; proton y-position determination; superior target dose; tumor motion;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4673-2028-3
DOI :
10.1109/NSSMIC.2012.6551984