Cable-induced effects on plane-parallel ionization chamber measurements in large clinical electron beams

Claudio Fiorino, Giovanni Mauro Cattaneo, Antonella Del Vecchio, Marcello Fusca, Barbara Longobardi, Patrizia Signorotto, Riccardo Calandrino

Research output: Contribution to journalArticlepeer-review

Abstract

The interaction between photon or electron fields and cables of ionization chambers induces the flow of leakage currents affecting the measured signal; this "cable effect" is particularly important when large electron and photon fields are used, i.e., when large portions of cable are irradiated. Therefore it is more interesting to investigate cable-induced effects when ionization chambers are used for clinical situations where large fields are used, for example, total body and total skin electron irradiations (TSEI). In TSEI fields these effects are particularly important. Cable and connector effects using an NE2534 Markus chamber in total skin irradiation conditions with different electron energies (from 1.6 to 4.5 MeV) have been investigated. These effects are significant and show that for TSI dosimetry it is vital to take them into account.

Original languageEnglish
Pages (from-to)73-76
Number of pages4
JournalMedical Dosimetry
Volume19
Issue number2
DOIs
Publication statusPublished - 1994

Keywords

  • Cable effects
  • Electron cable irradiation
  • Total skin electron irradiation

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Radiation
  • Health Professions(all)
  • Medicine(all)

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