TY  - JOUR
AU  - Briz, J. A.
AU  - Nerio, A. N.
AU  - Ballesteros, C.
AU  - Borge, M. J. G.
AU  - Martinez, P.
AU  - Perea, A.
AU  - Tavora, V. G.
AU  - Tengblad, O.
AU  - Ciemala, M.
AU  - Maj, A.
AU  - Olko, P.
AU  - Parol, W.
AU  - Pedracka, A.
AU  - Sowicki, B.
AU  - Zieblinski, M.
AU  - Nacher, E.
PY  - 2022
DA  - 2022//
TI  - Proton Radiographs Using Position-Sensitive Silicon Detectors and High-Resolution Scintillators
T2  - IEEE Trans. Nucl. Sci.
JO  - IEEE Transactions on Nuclear Science
SP  - 696
EP  - 702
VL  - 69
IS  - 4
PB  - Ieee-Inst Electrical Electronics Engineers Inc
KW  - LaBr3
KW  - particle tracking
KW  - proton computed tomography (pCT)
KW  - proton radiograph
KW  - proton therapy
KW  - scintillation detectors
KW  - silicon detectors
AB  - Proton therapy is a cancer treatment technique currently in growth since it offers advantages with respect to conventional X-ray and gamma-ray radiotherapy. In particular, better control of the dose deposition allowing to reach higher conformity in the treatments causing less secondary effects. However, in order to take full advantage of its potential, improvements in treatment planning and dose verification are required. A new prototype of proton computed tomography scanner is proposed to design more accurate and precise treatment plans for proton therapy. Our prototype is formed by double-sided silicon strip detectors and scintillators of LaBr3(Ce) with high energy resolution and fast response. Here, the results obtained from an experiment performed using a 100-MeV proton beam are presented. Proton radiographs of polymethyl methacrylate (PMMA) samples of 50-mm thickness with spatial patterns in aluminum were taken. Their properties were studied, including reproduction of the dimensions, spatial resolution, and sensitivity to different materials. Structures of up to 2 mm are well resolved and the sensitivity of the system was enough to distinguish the thicknesses of 10 mm of aluminum or PMMA. The spatial resolution of the images was 0.3 line pairs per mm (MTF-10%). This constitutes the first step to validate the device as a proton radiography scanner.
SN  - 0018-9499
UR  - https://arxiv.org/abs/2111.08681
UR  - https://doi.org/10.1109/TNS.2022.3142618
DO  - 10.1109/TNS.2022.3142618
LA  - English
N1  - WOS:000803113800017
ID  - Briz_etal2022
ER  -