An absorbed dose to water calorimeter for collimated radiation fields

Brede, H.J.; Hecker, O.; Hollnagel, R.

doi:10.1016/s0168-9002(00)00528-3

Cited by 10 publications

(13 citation statements)

References 19 publications

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“…In the wake of those recommendations, numerous applications of calorimeters to reference dosimetry in clinical beams have been reported. This comprised the use of water calorimeters for scattered proton beams, scanned proton beams and carbon ion beams, the use of graphite calorimeters for scattered proton beams and carbon ion beams and the use of an A‐150 tissue‐equivalent calorimeter in a scattered proton beam …”

Section: Detectors For Measurements Of Absorbed Dose In Reference Conmentioning

confidence: 99%

Dose detectors, sensors, and their applications

Giordanengo

2018

Medical Physics

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This article is intended to present the different types of particle and radiation detectors available for applications in particle therapy. Several types of detectors and sensors exist for measurements of absorbed dose in reference and nonreference conditions and the ones in use for beam monitoring. Therefore, this manuscript focuses on the following applications: (a) primary methods for dosimetry in ion beams, (b) measurements of absorbed dose in realistic patient‐specific scenarios with different dose delivery configurations, and (c) beam monitoring. Water and graphite calorimeters, Faraday cups, ionization based gas detectors are described first, followed by the description of the protocols for proton and ion dosimetry. Then films, scintillator and solid‐state detectors are reviewed. Finally, several types of ionization chambers (large, pinpoint, arrays of chambers arranged in regular 1D or 2D pattern, parallel‐plate configuration with large integral electrodes or with anode segmented in strips or pixels, multi‐wire, and the multi‐gap prototype) have been considered. New beam monitors to deal with a wide range of intensity and pulsed beams expected from new accelerators, different dose fractionation and advanced delivery techniques are presented. The existing detectors available for particle therapy have been described taking into account the different requirements for devices used in reference and nonreference conditions and the ones designed for beam monitoring.

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Section: Detectors For Measurements Of Absorbed Dose In Reference Conmentioning

confidence: 99%

Dose detectors, sensors, and their applications

Giordanengo

2018

Medical Physics

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“…The (w air ) p -value data used here are the means of those obtained using ionization chamber calibrations based on 60 Co and electrons: (33.870.5) J C À1 at 40 MeV and (34.67 0.6) J C À1 at 56 MeV. Earlier Brede et al (1999) used a portable water calorimeter (Brede et al, 2000), operated at 4 1C, to make comparative calorimetric and ionometric measurements in a monoenergetic 200 MeV clinical proton beam. The residual proton energy at the measuring depth was 182 MeV.…”

Section: Calorimetric Measurementsmentioning

confidence: 99%

The w-value in air for proton therapy beams

Jones

2006

Radiation Physics and Chemistry

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“…Since radiobiological effects are always described as a function of the delivered dose the quality of treatments or experiments strongly relies on the accuracy of dose measurements. Several dosimetric techniques are commonly used, either to calibrate the beam or to monitor the dose during irradiation: ionisation chambers, nuclear tracks detectors, semiconductor devices or calorimeters [1][2][3][4]. As underlined by Fukumura most of these measurements are relative and only calorimetry enables an absolute dose measurement [1].…”

Section: Introductionmentioning

confidence: 99%

Polyvinyltoluene scintillators for relative ion dosimetry: An investigation with Helium, Carbon and Neon beams

Broggio

Barillon

Jung

et al. 2007

Nuclear Instruments and Methods in Physics Research Section B:

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We present a dosimeter prototype, devoted to ion beam dosimetry, tested with Helium, Carbon and Neon ions having an equivalent range in water of 150 mm. A polyvinyltoluene based plastic scintillator is used to convert the deposited energy into scintillation, a measurement probe and a long optical fibre guide the light to a photon counting unit. Using 10-40 µm thick scintillators we show that the dosimeter gain is enough to provide useful measurements, the ion-induced scintillation can be interpreted using a model taking into account the energy deposited by secondary electrons. For a practical purpose it is shown that a linear relationship can be established between the scintillation signal and the relative dose.

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An absorbed dose to water calorimeter for collimated radiation fields

Cited by 10 publications

References 19 publications

Dose detectors, sensors, and their applications

Dose detectors, sensors, and their applications

The w-value in air for proton therapy beams

Polyvinyltoluene scintillators for relative ion dosimetry: An investigation with Helium, Carbon and Neon beams

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