Development of silicon monolithic arrays for dosimetry in external beam radiotherapy

Bisello, F.; Menichelli, D.; Scaringella, M.; Talamonti, Cinzia; Zani, M.; Bucciolini, M.; Bruzzi, M.

doi:10.1016/j.nima.2015.04.064

Cited by 14 publications

(9 citation statements)

References 11 publications

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“…Alternative detectors based on diode or diamond arrays are under development since many years to replace film. Their main advantages are the good spatial and dose (large signal) resolution.…”

Section: Detectors For Absorbed Dose In Nonreference Conditionsmentioning

confidence: 99%

“…Silicon diode detectors are widely used as single point detectors but additionally, they are suitable to build 1D and 2D arrays of detectors and a well‐developed manufacture method offers the possibility to produce monolithic 2D sensors with sub‐millimeter spatial resolution …”

Section: Detectors For Absorbed Dose In Nonreference Conditionsmentioning

confidence: 99%

“…Segmented ICs 99-101 are also adequate for planar dose checks but for the low spatial resolution (5-10 mm) these dosimeters are not recommended for commissioning and TPS validation while are a good choice for QA tests. 88 Alternative detectors based on diode [102][103][104][105] or diamond arrays [106][107][108] are under development since many years to replace film. Their main advantages are the good spatial and dose (large signal) resolution.…”

Section: A1 1d and 2d Transversal Dose Profilesmentioning

confidence: 99%

“…139 Silicon diode detectors are widely used as single point detectors but additionally, they are suitable to build 1D and 2D arrays of detectors and a well-developed manufacture method offers the possibility to produce monolithic 2D sensors with sub-millimeter spatial resolution. 104,105 A crucial limitation exists for these detectors due to radiation effects leading to general resolution degradation and variation in the response silicon diodes, even at relatively low radiation fluences. As the irradiation is typically nonuniform on arrays of sensors, frequent calibrations need to be performed to avoid inaccuracies in uniformity and profile measurements.…”

Section: E Solid-state Detectorsmentioning

confidence: 99%

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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 Absorbed Dose In Nonreference Conditionsmentioning

confidence: 99%

Section: Detectors For Absorbed Dose In Nonreference Conditionsmentioning

confidence: 99%

Section: A1 1d and 2d Transversal Dose Profilesmentioning

confidence: 99%

Section: E Solid-state Detectorsmentioning

confidence: 99%

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Dose detectors, sensors, and their applications

Giordanengo

2018

Medical Physics

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“…Characterization of the prototype using flattened Co 60 beam, unflattened MV x-ray beams, and rectangular proton beams has been reported in a previous work. 20 For measurements of proton range, the detector array is oriented parallel to the central axis (CAX) of the proton beam. After entering the 1DSDA, the protons deposit energy continuously in the silicon diodes.…”

Section: A 1dsda Specificationsmentioning

confidence: 99%

Proton computed tomography using a 1D silicon diode array

Wang¹,

Cammin

Bisello

et al. 2016

Medical Physics

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“Characterization of ELEKTA SRS cone collimator using high spatial resolution monolithic silicon detector array”

shukaili

Corde

Petasecca

et al. 2018

J Applied Clin Med Phys

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PurposeTo investigate the accuracy of the dosimetry of radiation fields produced by small ELEKTA cone collimators used for stereotactic radiosurgery treatments (SRS) using commercially available detectors EBT3 GafchromicTM film, IBA Stereotactic diode (SFD), and the recently developed detector DUO, which is a monolithic silicon orthogonal linear diode array detector.MethodsThese three detectors were used for the measurement of beam profiles, output factors, and percentage depth dose for SRS cone collimators with cone sizes ranging from 5 to 50 mm diameter. The measurements were performed at 10 cm depth and 90 cm SSD.ResultsThe SRS cone beam profiles measured with DUO, EBT3 film, and IBA SFD agreed well, results being in agreement within ±0.5 mm in the FWHM, and ±0.7 mm in the penumbra region. The output factor measured by DUO with 0.5 mm air gap above agrees within ±1% with EBT3. The OF measured by IBA SFD (corrected for the over‐response) agreed with both EBT3 and DUO within ±2%. All three detectors agree within ±2% for PDD measurements for all SRS cones.ConclusionsThe characteristics of the ELEKTA SRS cone collimator have been evaluated by using a monolithic silicon high spatial resolution detector DUO, EBT3, and IBA SFD diode. The DUO detector is suitable for fast real‐time quality assurance dosimetry in small radiation fields typical for SRS/SRT. This has been demonstrated by its good agreement of measured doses with EBT 3 films.

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Development of silicon monolithic arrays for dosimetry in external beam radiotherapy

Cited by 14 publications

References 11 publications

Dose detectors, sensors, and their applications

Dose detectors, sensors, and their applications

Proton computed tomography using a 1D silicon diode array

“Characterization of ELEKTA SRS cone collimator using high spatial resolution monolithic silicon detector array”

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