Development of a pixel ionization chamber for beam monitor in proton therapy

2007 ◽  
Vol 572 (1) ◽  
pp. 257-258 ◽  
Author(s):  
A. La Rosa ◽  
M.A. Garella ◽  
A. Attili ◽  
F. Bourhaleb ◽  
R. Cirio ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Ionization Chamber ◽  
Beam Monitor

SU-G-TeP2-13: Patient-Specific Reduction of Range Uncertainties in Proton Therapy by Proton Radiography with a Multi-Layer Ionization Chamber

2016 ◽  
Vol 43 (6Part27) ◽  
pp. 3665-3666
Author(s):  
S Deffet ◽  
P Farace ◽  
R Righetto ◽  
B Macq ◽  
F Vander Stappen
Keyword(s):  
Proton Therapy ◽  
Ionization Chamber ◽  
Patient Specific ◽  
Proton Radiography

Use of a two-dimensional ionization chamber array for proton therapy beam quality assurance

2008 ◽  
Vol 35 (9) ◽  
pp. 3889-3894 ◽  
Author(s):  
Bijan Arjomandy ◽  
Narayan Sahoo ◽  
Xiaoning Ding ◽  
Michael Gillin
Keyword(s):  
Quality Assurance ◽  
Proton Therapy ◽  
Ionization Chamber ◽  
Beam Quality ◽  
Two Dimensional

464 First results of the MOPI pixel ionization chamber used as beam monitor at the Institut Curie - Centre de Protonthérapie d'Orsay (ICPO)

2005 ◽  
Vol 76 ◽  
pp. S200-S201
Author(s):  
A. La Rosa ◽  
F. Bourhalebs ◽  
R. Cirioz ◽  
M. Donetti ◽  
M.A. Garella ◽  
...  
Keyword(s):  
Ionization Chamber ◽  
First Results ◽  
Beam Monitor

scholarly journals Multifunctional ionization chamber and its electronic path for use on the medical accelerator "Prometeus"

2020 ◽  
Vol 23 (3) ◽  
pp. 229-240
Author(s):  
V. V. Siksin
Keyword(s):  
Proton Therapy ◽  
Ionization Chamber ◽  
Accurate Determination ◽  
Absorbed Dose ◽  
Incident Beam ◽  
Operating Mode ◽  
Therapy Session ◽  
Proton Accelerator ◽  
High Dose ◽  
Scanning Beam

The article describes the proposed new multifunctional ionization chamber (MIC) designed to measure dose profiles when the medical accelerator "Prometheus" is operating in the scanning "pencil beam" mode. A digital image acquisition detector (DIDE) with a tissue-equivalent water phantom is used to calibrate the accelerator before a radiation therapy session. The application of the CPPI on the beam of a proton accelerator operating in the mode of beam splitting into spots with a scanning beam is considered. The CDPI detector allows for a few accelerator pulses in on-line mode to see how the energy release of each spot is distributed over the area of the irradiated target, which is the actual calibration of the accelerator before the proton therapy session. During the proton therapy session, it is planned to install the MIC directly in front of the patient. The MIC chamber contains two ionization chambers operating simultaneously — a pad chamber (PC) operating on gas or "warm liquid" and a strip ionization chamber operating only on gas (SC). At the accelerator "Prometheus" it is proposed to use a MIC, which will be used in the mode of operation by the method of active scanning with a "pencil" proton beam. The use of the MIC operation is intended to control the density of the beam intensity during the irradiation of the "target" in the patient during the proton therapy session. In case of violation of the planned operating mode of the accelerator and the beam goes beyond the parameters preset before the session, the deviation detection control system (SDMS) will turn off the accelerator. The device of the readout electronics (SE) of the MIC and SKOO cameras is described. This proposed detector, including the MIC and SKOO camera and the reading electronics serving it, will improve the quality of the therapeutic beam supply, due to the accurate determination of the absorbed dose density supplied by the scanning beam to each spot of the irradiated target, and therefore the generated high dose distribution field will correspond to the irradiated volume of the patient and will increase the safety and control of patient exposure to the target. The PC included in the MIC is designed on a "warm liquid" (or gas) and is a high-precision ionization chamber with coordinate sensitivity over the width of the irradiated target. The SC included in the MIC operates on gas and controls the direction of the incident beam to a given spot in the target. A version of the charge-sensitive preamplifier (QCD) and the SE system designed for experimental verification of the MIC prototype has been developed. The SCOO circuit working in conjunction with the MIC camera allows you to control the predetermined parameters of the irradiation of the patient's target boundaries and turns off the accelerator if these parameters deviate from the initially specified ones.

Low Threshold-Energy Ionization Chamber System for Monitoring in Proton Therapy

2021 ◽  
Vol 85 (5) ◽  
pp. 496-500
Author(s):  
S. I. Potashev ◽  
S. V. Akulinichev ◽  
Yu. M. Burmistrov ◽  
A. I. Drachev
Keyword(s):  
Proton Therapy ◽  
Ionization Chamber ◽  
Threshold Energy ◽  
Chamber System ◽  
Low Threshold
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