Determination of the recombination correction factor kS for some specific plane-parallel and cylindrical ionization chambers in pulsed photon and electron beams

Physics in Medicine and Biology

Volumn 52, Issue 2, 2007, Pages

  Bruggmoser, G ^a   Saum, R ^a   Schmachtenberg, A ^b   Schmid, F ^a   Schule E ^c  

^a UNIVERSITY OF FREIBURG   (Germany)

^b UNIVERSITY HOSPITAL RWTH AACHEN   (Germany)

^c Physikalisch Technische Werkstatten Dr Pychlau GmbH   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRODES; ELECTRON BEAMS; IONIZATION CHAMBERS; PARTICLE ACCELERATORS; RADIATION EFFECTS; RADIOACTIVITY MEASUREMENT;

BOAG METHODS; MULTI VOLTAGE ANALYSIS (MVA); POLARIZING VOLTAGE; PULSED PHOTONS;

DOSIMETRY;

ARTICLE; DOSIMETRY; ELECTRON ACCELERATOR; ELECTRON BEAM; IONIZATION CHAMBER; PHOTON; PRIORITY JOURNAL; RADIATION DOSE; RADIATION ENERGY; BIOPHYSICS; COMPUTER ASSISTED RADIOTHERAPY; ELECTRON; HUMAN; MAGNETIC AND ELECTROMAGNETIC EQUIPMENT; MEGAVOLTAGE RADIOTHERAPY; METHODOLOGY; RADIOMETRY; STATISTICAL MODEL;

ION;

BIOPHYSICS; ELECTRONS; HUMANS; IONS; MODELS, STATISTICAL; PARTICLE ACCELERATORS; PHOTONS; RADIATION DOSAGE; RADIOMETRY; RADIOTHERAPY DOSAGE; RADIOTHERAPY PLANNING, COMPUTER-ASSISTED; RADIOTHERAPY, HIGH-ENERGY;

EID: 33947717382     PISSN: 00319155     EISSN: 13616560     Source Type: Journal    
DOI: 10.1088/0031-9155/52/2/N01     Document Type: Article

References (35)

1. Berg M and Noerrevang O 2004 Recombination factors for the cylindrical FC65-G ionization chamber in pulsed photon beams and the plane-parallel Roos ionization chamber in pulsed electron beams Phys. Med. Biol. 49 5309-18
2. Boag J W 1966 Ionization chambers Radiation Dosimetry vol 2 ed Attix F H and Roesch W C (London: Academic) pp 1-72
3. Boag J W 1987 The Dosimetry of Ionizing Radiation vol II ed Kase K R, Bjarngard B E and Attix F H (London: Academic) pp 169-244
4. Boag J W, Hochhäuser E and Balk O A 1996 The effect of free-electron collection on the recombination correction to ionization measurements of pulsed radiation Phys. Med. Biol. 41 885-97
5. Böhm J 1976 Saturation correction for plane-parallel ionization chambers Phys. Med. Biol. 21 754-9
6. Burns J E and Burns D T 1993 Comments on 'Ion recombination corrections for plane parallel and thimble chambers in electron and photon radiation' Phys. Med. Biol. 38 1986-88
7. Burns D T and McEwen M R 1998 Ion recombination corrections for the NACP parallel-plate chamber in a pulsed electron beam Phys. Med. Biol. 43 2033-45
8. Conere T J and Boag J W 1984 The collection efficiency of an ionization chamber in a pulsed and magnetically swept electron beam: limits of validity of the two voltage technique Med. Phys. 11 465-8
9. DeBlois F, Zankowski C and Podgorsak E B 2000 Saturation current efficiency for ionization chambers in pulsed beams Med. Phys. 27 1146-55
10. Di Martino F, Gianelli M, Traino A C and Lazzeri M 2005 Ion recombination correction for very high dose- per-pulse high-energy electron beams Med. Phys. 32 2204-10
11. Derikum K and Roos M 1993 Measurements of saturation correction factors of thimble-type ionization chambers in pulsed photon beams Phys. Med. Biol. 38 755-63
12. Derikum K 2002 Die allgemeinen Korrektionen bei der Ionisationsdosimetrie Messtechnische Kontrollen von Therapiedosimetern ed Kramer H M and Derikum K (Braunschweig: PTB-Dos-41) pp 57-69
13. Derikum K 2005 Recombination correction for ionization chambers calibrated by PTB in Co-60 fields Biomedizinische Technik 50 (Suppl. vol 1) 273-4
14. DIN 6800 Teil 2 1997 Dosismessverfahren nach der Sondenmethode für Photonen- und Elektronenstrahlung-Teil 2: Ionisationsdosimetrie. Deutsches Institut für Normung e.V. (Berlin: Beuth Verlag)
15. DIN 6800 Teil 2 2006 Dosismessverfahren nach der Sondenmethode für Photonen- und Elektronenstrahlung-Teil 2: Ionisationsdosimetrie. Deutsches Institut für Normung e.V. (Draft)
16. DIN 6800 Teil 5 2005 Dosismessverfahren nach der Sondenmethode für Photonen- und Elektronenstrahlung -Teil 5: Thermolumineszenzdosimetrie. Deutsches Institut für Normung e.V. (Berlin: Beuth Verlag)
17. IAEA 1997 The use of plane parallel ionization chambers in high energy electron and photon beams Technical Report Series 381 (Vienna: International Atomic Energy Agency)
18. IAEA 2000 Absorbed dose determination in external beam radiotherapy: An international code of practice for dosimetry on standards of absorbed dose to water Technical Report Series 398 (Vienna: International Atomic Energy Agency)
19. ICRU 1982 The Dosimetry of Pulsed Radiation ICRU Report 34 (Bethesda, MD: ICRU Publications) pp 5-13
20. Jaffé G 1940 On the theory of recombination Phys. Rev. 58 968-76
21. Havercroft J M and Klevenhagen S C 1993 Ion recombination corrections for plane-parallel and thimble chambers in electron and photon radiation Phys. Med. Biol. 38 25-38
22. Havercroft J M and Klevenhagen S C 1993 Ion recombination corrections for plane-parallel and thimble chambers in electron and photon radiation: reply to the editor Phys. Med. Biol. 38 1988-91
23. Karger C P and Hartmann G H 2004 Experimental correction for ionic recombination in ionization chambers for pulsed radiation according to DIN-6800-2 and TRS 398 Z. Med. Phys. 14 260-6
24. 60Co beams using the EGSnrc Monte Carlo code Med. Phys. 30 179-89
25. McCaffrey J P, Downton B, Shen H, Niven D and McEwen M 2005 Pre-irradiation effects on ionization chambers used in radiation therapy Phys. Med. Biol. 50 N121-33
26. McEwen M R, Williams A J and DuSautoy A R 1998 Trial calibrations of therapy level electron beam ionization chambers in terms of absorbed dose to water NPL Report CIRM 20 National Physical Laboratory, Teddington, Middlesex, UK
27. McEwen M R, Williams A J and DuSautoy A R 2001 Determination of absorbed dose calibration factors for therapy level electron beam ionization chambers Phys. Med. Biol. 46 741-55
28. Nisbet A and Thwaites 1998 Polarity and ion recombination correction factors for ionization chambers employed in electron beam dosimetry Phys. Med. Biol. 43 435-43
29. Pearce J, Russel T and DuSautoy A 2006 The characterization of the Advanced Markus ionization chamber for use in reference electron dosimetry in the UK Phys. Med. Biol. 51 473-83
30. Piermattei A, delle Canne S, Azario L, Russo A, Fidanzio A, Miceli R, Soriani A, Orvieto A and Fantini M 2000 The saturation loss for a plane parallel ionization chambers at high dose per pulse values Phys. Med. Biol. 45 1869-83
31. Roos M and Derikum K 2000 The recombination correction and the dependence of the response of plane parallel chambers on the polarizing voltage in pulsed electron and photon beams IAEA-TECDOC-1173 (Vienna: International Atomic Energy Agency) pp 53-64
32. Seuntjens J P, Ross C K, Shortt K R and Rogers D W O 2000 Absorbed-dose beam quality conversion factors for cylindrical chambers in high energy photon beams Med. Phys. 27 2763-79
33. Taylor L S 1935 Determination of the saturation ionization current from high speed electrons in air Phys. Rev. 46 970
34. Thwaites D I, DuSautoy A R, Jordan T, McEwen M R, Nisbet A, Nahum A E and Pitchford W G 2003 The IPEM code of practice for electron dosimetry for radiotherapy beams of initial energy from 4 to 25 MeV based on an absorbed dose to water calibration Phys. Med. Biol. 48 2929-70
35. Weinhous M S and Meli J A 1984 Determining pion, the correction factor for recombination losses in an ionization chamber Med. Phys. 11 846-9