Evaluation of the two‐voltage method for parallel‐plate ionization chambers irradiated with pulsed beams
Medical Physics2025Vol. 52(6), pp. 4894–4909
José Paz‐Martín, Andreas Schüller, Alexandra Bourgouin, Araceli Gago‐Arias, Diego M. González‐Castaño, Nicolás Gómez‐Fernández, Juan Pardo‐Montero, F. Gómez
Abstract
The numerical simulation shows a better agreement with the experimental data than the current analytical theories in terms of CCE. The classical TVM, systematically overestimates the saturation factor, with differences increasing with dose per pulse but also present at low dose per pulse. These results may have implications for the dosimetry with ionization chambers in therapy modalities that use a dose per pulse higher than conventional radiotherapy such as intraoperative radiotherapy but also in conventional dose per pulse for ionization chambers that suffer from significant charge recombination.
Related Papers
- Techniques of radiation dosimetry(1985)
- → Correction factors for Farmer-type chambers for absorbed dose determination in60Co and192Ir brachytherapy dosimetry(1998)7 cited
- → WE‐A‐BRB‐11: How Certain Can the Real‐Time Plan Predict the Post Dosimetry for Prostate Seed Implant?(2012)
- → TH‐B‐AUD A‐01: Accurate Clinical Measurements(2008)
- → Calorimetry, ionometry and solid state dosimetry in scanned light-ion beams(2015)