A pixel chamber to monitor the beam performances in hadron therapy

Bonin, R.; Attanasio, Roberto; Bourhaleb, F.; Cirio, R.; Donetti, M.; Garelli, E.; Giordanengo, S.; Marchetto, F.; Peroni, C.; Freire, C.J. Sanz; Simonetti, L.

doi:10.1016/j.nima.2003.11.104

Cited by 14 publications

(8 citation statements)

References 6 publications

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“…Plane-parallel ion chambers may also be designed as segmented chambers using either pixels (Arjomandy et al 2008, Bonin et al 2004, Nichiporov et al 2007, Spezi et al 2005 or strips (Brusasco et al 1997) as sensitive areas. They may be used to measure beam properties like flatness or lateral profiles and provide a spatial resolution in the order of a few millimeters.…”

Section: Plane-parallel Ion Chambersmentioning

confidence: 99%

Dosimetry for ion beam radiotherapy

et al. 2010

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Recently, ion beam radiotherapy (including protons as well as heavier ions) gained considerable interest. Although ion beam radiotherapy requires dose prescription in terms of iso-effective dose (referring to an iso-effective photon dose), absorbed dose is still required as an operative quantity to control beam delivery, to characterize the beam dosimetrically and to verify dose delivery. This paper reviews current methods and standards to determine absorbed dose to water in ion beam radiotherapy, including (i) the detectors used to measure absorbed dose, (ii) dosimetry under reference conditions and (iii) dosimetry under non-reference conditions. Due to the LET dependence of the response of films and solid-state detectors, dosimetric measurements are mostly based on ion chambers. While a primary standard for ion beam radiotherapy still remains to be established, ion chamber dosimetry under reference conditions is based on similar protocols as for photons and electrons although the involved uncertainty is larger than for photon beams. For non-reference conditions, dose measurements in tissue-equivalent materials may also be necessary. Regarding the atomic numbers of the composites of tissue-equivalent phantoms, special requirements have to be fulfilled for ion beams. Methods for calibrating the beam monitor depend on whether passive or active beam delivery techniques are used. QA measurements are comparable to conventional radiotherapy; however, dose verification is usually single field rather than treatment plan based. Dose verification for active beam delivery techniques requires the use of multi-channel dosimetry systems to check the compliance of measured and calculated dose for a representative sample of measurement points. Although methods for ion beam dosimetry have been established, there is still room for developments. This includes improvement of the dosimetric accuracy as well as development of more efficient measurement techniques.

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Section: Plane-parallel Ion Chambersmentioning

confidence: 99%

Dosimetry for ion beam radiotherapy

et al. 2010

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“…In an attempt to address many of these issues, detectors such as the Magic Cube, pixel-segmented and strip-segmented ionization chambers [11][12][13][14][15] were proposed for measuring transverse and depth-dose distributions in real time. Commercially available detectors based on two-dimensional ion chamber arrays such as the MatriXX detector [16] and OCTAVIUS 729 XDR [17] are sometimes used, although they were developed mainly for photon radiotherapy.…”

Section: Introductionmentioning

confidence: 99%

A GEM-based dose imaging detector with optical readout for proton radiotherapy

Klyachko¹,

Moskvin²,

Nichiporov³

et al. 2012

Nuclear Instruments and Methods in Physics Research Section A:

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“…The design of the DDS described in this paper started ten years ago with a prototype of the beam monitor chambers, fully tested [31] on the GSI clinical carbon ion beams.…”

Section: Discussionmentioning

confidence: 99%