Liquid ionization chambers for absorbed dose measurements in water at low dose rates and intermediate photon energies

Medical Physics

Volumn 25, Issue 6, 1998, Pages 900-907

  Wickman, Göran ^a   Johansson, Bengt ^a   Bahar Gogani, Jalil ^a   Holmström, Thord ^a   Grindborg, Jan Erik ^b  

^a UMEÅ UNIVERSITY   (Sweden)

^b Swedish Radiation Protection Authority   (Sweden)

Author keywords

Brachytherapy sources; Dosimetry in water; Intermediate photon energies; Liquid ionization chamber

Indexed keywords

CONVOLUTION; IONIZATION CHAMBERS; LIQUIDS; MIXTURES; ONCOLOGY; PHOTOIONIZATION; PHOTONS; RADIOTHERAPY; SILANES; TEMPERATURE DISTRIBUTION;

BRACHYTHERAPY; HIGH-PRECISION MEASUREMENT; LIQUID IONIZATION CHAMBERS; LIQUID LAYER THICKNESS; PARALLEL CONFIGURATION; PHOTON ENERGY; SYSTEMATIC CHANGES; TEMPERATURE DEPENDENCE;

IONIZATION OF LIQUIDS;

OCTANE; SILANE DERIVATIVE; WATER;

ARTICLE; BRACHYTHERAPY; CALIBRATION; DOSIMETRY; ELECTRIC POTENTIAL; IONIZATION CHAMBER; PHOTON; POLARIZATION; PRIORITY JOURNAL; RADIATION DOSE; RADIATION FIELD; REPRODUCIBILITY; TEMPERATURE DEPENDENCE; THICKNESS;

EID: 0031859143     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.598268     Document Type: Article

References (32)

1. 192Ir interstitial brachytherapy sources," Med. Phys. 17, 1032- 1040 (1990).
2. A. S. Meigooni, V. Mishra, H Panth, and J Williamson, "Instrumentation and dosimeter-size artefacts in quantitative thermoluminescence dosimetry of low dose fields," Med. Phys. 22, 555-561 (1995).
3. 169Yb seeds for brachytherapy treatment," Phys. Med Biol. 8, 163-169 (1992).
4. M. S. MacPherson and J. J Battista, "Dose distributions and dose rate constants for new ytterbium-169 brachytherapy seeds," Med. Phys. 22, 89-96 (1995).
5. R. K. Das, V. Mishra, H. Perera, A S. Meigooni, and J. F. Williamson, "A secondary air kerma strength standard for Yb-169 interstitial brachytherapy sources," Phys. Med. Biol. 40, 741-756 (1995).
6. R. Nath, L. L. Anderson, G. Luxton, K. A. Weaver, J. F. Williamson, and A. S. Meigooni, "Dosimetry of interstitial brachytherapy sources: Recommendations of the AAPM Radiation Therapy Committee Task Group No. 43," Med. Phys 22, 209-234 (1995).
7. A. Piermattei, L. Azario, G. Monaco, A. Sorian, and G. Arcorito, "p-type silicon detector for brachytherapy dosimetry," Med. Phys 22, 835-839 (1995).
8. R. K. Das, Z. Li, H. Perera, and J. F. Williamson, "Accuracy of Monte Carlo photon transport simulation in characterizing brachytherapy dosimeter energy-response artefacts," Phys. Med. Biol 41, 995-1006 (1996).
9. B. Johansson, G. Wickman, and T. Holmström, "Properties of liquid ionization chambers at LDR brachytherapy dose rates," Phys Med. Biol. 40, 575-587 (1995).
10. G. Wickman, "Radiation quality independent liquid ionization chamber for dosimetry of electron radiation from medical accelerators," Acta Radiol.: Ther., Phys., Biol. 13, 37-48 (1974).
11. G. Wickman, "A liquid ionization chamber with high spatial resolution," Phys. Med. Biol. 19, 66-72 (1974).
12. G. Wickman and H. Nyström, "The use of liquid ionization chambers for high precision radiotherapy dosimetry," Phys Med. Biol. 37, 1789-1812 (1992).
13. K. A Johansson and H. Svensson, "Liquid ionization chamber for absorbed dose determinations in photon and electron beams," Acta Radiol.: Oncol. 21, 359-367 (1982).
14. J. Chu, W. Grant III, and P. Almond, "A liquid ionization chamber for neutron dosimetry," Phys. Med. Biol. 25, 1133-1148 (1980).
15. O. Mattson, H. Svensson, G. Wickman, S. R. Domen, J. S. Pruitt, and R. Loevinger, "Absorbed dose in water comparison of several methods using a liquid ionization chamber," Acta Oncol. 29, 235-240 (1990).
16. C.-M. Ma and A E. Nahum, "Calculations of ion chamber displacement effect corrections for medium-energy x-ray dosimetry," Phys. Med. Biol. 40, 45-62 (1995)
17. IAEA, "Absorbed Dose Determination in Photon and Electron Beams" (Technical Reports Series 277), IAEA, Vienna (1987)
18. J. Seuntjens and F. Verhagen, "Dependence of overall correction factor of a cylindrical ionization chamber on field size and depth in medium- energy x-ray beams," Med. Phys. 23, 1789-1796 (1996).
19. B. Johansson and G. Wickman, "General collection efficiency for liquid isooctane and tetramethylsilane used as sensitive media in a parallel-plate ionization chamber," Phys. Med. Biol. 42, 133-145 (1997)
20. L. Onsager, "Initial recombination of ions," Phys. Rev. 54, 554-557 (1938).
21. W. F. Schmidt and A. O. Allen, "Free-ion yields in sundry irradiated liquids," J. Chem. Phys. 52, 2345-2351 (1970).
22. T. E. Burlin, "A general theory of cavity ionization," Br. J. Radiol. 21, 727-734 (1966)
23. J. H. Hubbell and S. M. Seltzer, "Tables of X-ray mass attenuation coefficients and mass energy-absorption coefficients 1 keV to 20 MeV for elements Z = 1 to 92 and 48 additional substances of dosimetric interest," Report NISTIR5632, U S. Department of Commerce, Gaithersburg, MD 20899 (1995).
24. (a) J. H. Hubbell, "Photon mass attenuation and mass energy-absorption coefficients for H, C, N, O, Ar, and seven mixtures from 0.1 keV to 20 MeV," Radiat. Res. 70, 58-81 (1977);
25. (b) J. H. Hubbell, private communication.
26. G. Mie, "Der elektrische strom in ionisierter luft in einem ebenden kondensator," Ann Phys. (Leipzig) 13, 857-889 (1904).
27. J. R. Greening, "Saturation characteristics of parallel-plate ionization chambers," Phys. Med. Biol. 9, 143-154 (1964).
28. J. R. Greening, "On Greening's treatment of saturation characteristics of parallel-plate ionization chambers," Phys. Med. Biol. 10, 566 (1965).
29. S. N. Rustgi, "Evaluation of the dosimetric characteristics of a diamond detector for photon beam measurements," Med. Phys. 22, 567-570 (1995).
30. E. A. Burgmeister and W. Schouterm, "The construction of a diamond detector for ionising radiation," Radiat. Prot. Dosim. 6, 145-148 (1984).
31. S. Vatnitsky, V. Khumov, V. Fommych, and E. Shuele, "Diamond detector dosimetry for medical applications," Radiat. Prot. Dosim. 47, 515- 518 (1993).
32. D. Flühs, M. Heintz, F. Indenkämpen, C. Wieczorek, H. Kolanoski, and U. Quast, "Direct reading measurement of absorbed dose with plastic scintillators - The general concept and applications to ophthalmic plaque dosimetry," Med. Phys. 23, 427-434 (1996).