Dose verification and calibration of the Cyberknife® by EPR/alanine dosimetry

Garcia, Tristan; Lacornerie, T.; Popoff, Romain; Lourenço, Valérie; Bordy, Jean-Marc

doi:10.1016/j.radmeas.2011.03.031

Cited by 13 publications

(8 citation statements)

References 12 publications

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“…As they are completely surrounded by ABS material to insure homogeneity of the environment, the dose measured in such conditions is an absorbed dose in alanine inside an ABS environment. To increase statistic quality, nine measurements are done for four irradiations durations (4,8,11, and 15 min). An absolute calibration implies a method allowing expressing results in terms of absorbed dose to water, inside a water environment, and in the TRS 398 reference conditions.…”

Section: B2 Dose Rate Verification With Alanine Dosimetermentioning

confidence: 99%

“…[7][8][9][10] Moreover, the LNHB has already carried out such studies for innovative radiotherapy techniques like Cyberknife or Tomotherapy. 11,12 Thanks to the shape and dimensions of alanine dosimeters, they can be used for small beams. Alanine dosimeters have interesting advantages: measures are at solid state and nondestructive, their responses are almost independent on the dose rate and energy of radiotherapy photon beams and their signal is stable in time (signal decreases less than 1% per year).…”

Section: Introductionmentioning

confidence: 99%

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Absolute calibration of the Gamma Knife^® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

et al. 2014

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Section: B2 Dose Rate Verification With Alanine Dosimetermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Absolute calibration of the Gamma Knife^® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

et al. 2014

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“…[ 31 93 94 ] Recently, alanine has been used to verify advanced radiotherapy techniques such as IMRT and radiosurgery. [ 95 96 ]…”

Section: Various Dosimeters Used In Small-field Dosimetrymentioning

confidence: 99%

Different dosimeters/detectors used in small-field dosimetry: Pros and cons

et al. 2018

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With the advent of complex and precise radiation therapy techniques, the use of relatively small fields is needed. Using such field sizes can cause uncertainty in dosimetry; therefore, special attention is required both in dose calculations and measurements. There are several challenges in small-field dosimetry such as the steep gradient of the radiation field, volume averaging effect, lack of charged particle equilibrium, partial occlusion of radiation source, beam alignment, and unable to use a reference dosimeter. Due to these challenges, special dosimeters are needed for small-field dosimetry, and this review article discusses this topic.

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“…with doses lower than 10 Gy. In recent years, advanced therapy modalities such as the cyberknife have also been checked using alanine dosimetry [8]. Within the framework of a quality assurance project in Belgium, a large fraction of the Belgian therapy centres participated in a dosimetry audit using alanine/ESR between 2009 and 2011 [9].…”

Section: Introductionmentioning

confidence: 99%

A blind test of the alanine dosimetry secondary standard of the PTB conducted by the BIPM

Anton¹,

Allisy-Roberts²,

Kessler³

et al. 2013

Metrologia

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In order to verify the reliability of the PTB's secondary standard measurement system for the absorbed dose to water, D W , based on alanine with readout by electron spin resonance (ESR), a blind test was conducted. Nine detectors consisting of four alanine pellets each were irradiated in the 60 Co reference field of the BIPM. The doses were restricted to the range between 10 Gy and 20 Gy in order to minimize the influence of noise. The values of the delivered doses were not communicated until after the measurement results were reported back to the BIPM. The absorbed dose to water D W was measured using a slightly simplified procedure, compared to previous publications, i.e. without construction of a calibration curve. On average, the measurement results are 0.12 % higher than expected from the known difference between the primary standards for D W of the BIPM and the PTB. Compared to the combined measurement uncertainty of the ratio of determined and delivered dose of approximately 0.45 %, the agreement is good.

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Dose verification and calibration of the Cyberknife® by EPR/alanine dosimetry

Cited by 13 publications

References 12 publications

Absolute calibration of the Gamma Knife^® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

Absolute calibration of the Gamma Knife^® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

Different dosimeters/detectors used in small-field dosimetry: Pros and cons

A blind test of the alanine dosimetry secondary standard of the PTB conducted by the BIPM

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Dose verification and calibration of the Cyberknife® by EPR/alanine dosimetry

Cited by 13 publications

References 12 publications

Absolute calibration of the Gamma Knife® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

Absolute calibration of the Gamma Knife® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

Different dosimeters/detectors used in small-field dosimetry: Pros and cons

A blind test of the alanine dosimetry secondary standard of the PTB conducted by the BIPM

Contact Info

Product

Resources

About

Absolute calibration of the Gamma Knife^® Perfexion™ and delivered dose verification using EPR/alanine dosimetry

Absolute calibration of the Gamma Knife^® Perfexion™ and delivered dose verification using EPR/alanine dosimetry