OC-0290 Consistency of PTW30013 and FC65-G ion chamber magnetic field correction factors
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چکیده
منابع مشابه
An EGSnrc investigation of correction factors for ion chamber dosimetry
Radiation dosimetry is used to quantify the dose delivered during radiation therapy by using ionization chambers with several correction factors. Knowledge of these factors is needed at well below the 1% level in order to maintain the overall uncertainty on the reference dosimetry near 1-2%. The small magnitude of the corrections renders measurements very difficult. Monte Carlo calculations are...
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synthesis of amido alkylnaphthols using nano-magnetic particles and surfactants
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15 صفحه اولPolarity and Ion Recombination Correction Factors of a Thimble Type Ionization Chamber with Depth in Water in the Megavoltage Beams
When the PDD (percentage depth dose) in the megavoltage beams is measured in the water phantom using the dosimetry system, the polarity and ion recombination effects of ionization chambers with depth in water are not usually taken into consideration. The polarity and ion recombination effects may vary depending on the radiation type and spectrum, which vary with depth in water [1-4]. If those e...
متن کاملInvestigation of correction factors for non-reference conditions in ion chamber photon dosimetry with Monte-Carlo simulations.
Current dosimetry protocols require geometrical reference conditions for the determination of absorbed dose in external radiotherapy. Whenever these geometrical conditions cannot be maintained the application of additional corrections becomes necessary, in principle. The current DIN6800-2 protocol includes a corresponding factor k(NR), but numerical values are lacking and no definite informatio...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2019
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(19)30710-8