WE-D-T-617-09: A Novel Approach to the Optimization of Beam Current Modulation for Proton Therapy Beam Using Passive Scattering

2005 ◽  
Vol 32 (6Part19) ◽  
pp. 2138-2138
Author(s):  
H Lu ◽  
H Kooy
Keyword(s):  
Proton Therapy ◽  
Beam Current ◽  
Current Modulation ◽  
Novel Approach ◽  
Passive Scattering

Sensitivities in the production of spread-out Bragg peak dose distributions by passive scattering with beam current modulation

2007 ◽  
Vol 34 (10) ◽  
pp. 3844-3853 ◽  
Author(s):  
Hsiao-Ming Lu ◽  
Robert Brett ◽  
Martijn Engelsman ◽  
Roelf Slopsema ◽  
Hanne Kooy ◽  
...  
Keyword(s):  
Bragg Peak ◽  
Beam Current ◽  
Dose Distributions ◽  
Current Modulation ◽  
Peak Dose ◽  
Passive Scattering ◽  
Spread Out Bragg Peak

Depth Dose Measurement using a Scintillating Fiber Optic Dosimeter for Proton Therapy Beam of the Passive-Scattering Mode Having Range Modulator Wheel

2018 ◽  
Vol 72 (9) ◽  
pp. 1025-1032 ◽  
Author(s):  
Ui-Jung Hwang ◽  
Dongho Shin ◽  
Se Byeong Lee ◽  
Young Kyung Lim ◽  
Jong Hwi Jeong ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Fiber Optic ◽  
Dose Measurement ◽  
Depth Dose ◽  
Scintillating Fiber ◽  
Passive Scattering

Simulation study on beam current modulation of C-band wide-gap triaxial klystron

2010 ◽  
Vol 22 (3) ◽  
pp. 600-604
Author(s):  
白现臣 Bai Xianchen ◽  
张建德 Zhang Jiande ◽  
杨建华 Yang Jianhua ◽  
张泽海 Zhang Zehai
Keyword(s):  
Simulation Study ◽  
Beam Current ◽  
Current Modulation ◽  
Wide Gap

scholarly journals Novel Gd3+-doped silica-based optical fiber material for dosimetry in proton therapy

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
C. Hoehr ◽  
A. Morana ◽  
O. Duhamel ◽  
B. Capoen ◽  
M. Trinczek ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Proton Therapy ◽  
Bragg Peak ◽  
Light Emission ◽  
Sol Gel ◽  
Fiber Material ◽  
Beam Current ◽  
Strong Luminescence ◽  
The University

Abstract Optical fibers hold promise for accurate dosimetry in small field proton therapy due to their superior spatial resolution and the lack of significant Cerenkov contamination in proton beams. One known drawback for most scintillation detectors is signal quenching in areas of high linear energy transfer, as is the case in the Bragg peak region of a proton beam. In this study, we investigated the potential of innovative optical fiber bulk materials using the sol-gel technique for dosimetry in proton therapy. This type of glass is made of amorphous silica (SiO$${}_{2}$$ 2 ) and is doped with Gd$${}^{3+}$$ 3 + ions and possesses very interesting light emission properties with a luminescence band around 314 nm when exposed to protons. The fibers were manufactured at the University of Lille and tested at the TRIUMF Proton Therapy facility with 8.2–62.9 MeV protons and 2–6 nA of extracted beam current. Dose-rate dependence and quenching were measured and compared to other silica-based fibers also made by sol-gel techniques and doped with Ce$${}^{3+}$$ 3 + and Cu$${}^{+}$$ + . The three fibers present strong luminescence in the UV (Gd) or visible (Cu,Ce) under irradiation, with the emission intensities related directly to the proton flux. In addition, the 0.5 mm diameter Gd$${}^{3+}$$ 3 + -doped fiber shows superior resolution of the Bragg peak, indicating significantly reduced quenching in comparison to the Ce$${}^{3+}$$ 3 + and Cu$${}^{+}$$ + fibers with a Birks’ constant, k$${}_{B}$$ B , of (0.0162 $$\pm $$ ± 0.0003) cm/MeV in comparison to (0.0333 $$\pm $$ ± 0.0006) cm/MeV and (0.0352 $$\pm $$ ± 0.0003) cm/MeV, respectively. To our knowledge, this is the first report of such an interesting k$${}_{B}$$ B for a silica-based optical fiber material, showing clearly that this fiber presents lower quenching than common plastic scintillators. This result demonstrates the high potential of this inorganic fiber material for proton therapy dosimetry.

scholarly journals Conformal proton therapy with passive scattering

2016 ◽  
Vol 118 ◽  
pp. S2
Author(s):  
S.V. Akulinichev ◽  
R.D. Ilic ◽  
I.A. Yakovlev
Keyword(s):  
Proton Therapy ◽  
Passive Scattering
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