Radiotherapy & Oncology
Volume 95, Issue 2 , Pages 158-165 , May 2010

Clinical performance of a transmission detector array for the permanent supervision of IMRT deliveries

  • Björn Poppe

      Affiliations

    • Working Group Medical Radiation Physics, Carl von Ossietzky University Oldenburg, Germany
    • Pius-Hospital, Clinic for Radiotherapy and Oncology, Oldenburg, Germany
  • ,
  • Hui Khee Looe

      Affiliations

    • Working Group Medical Radiation Physics, Carl von Ossietzky University Oldenburg, Germany
    • Pius-Hospital, Clinic for Radiotherapy and Oncology, Oldenburg, Germany
    • Corresponding Author InformationCorresponding author. Address: Working Group Medical Radiation Physics, Carl von Ossietzky University Oldenburg, Germany.
  • ,
  • Ndimofor Chofor

      Affiliations

    • Working Group Medical Radiation Physics, Carl von Ossietzky University Oldenburg, Germany
    • Pius-Hospital, Clinic for Radiotherapy and Oncology, Oldenburg, Germany
  • ,
  • Antje Rühmann

      Affiliations

    • Working Group Medical Radiation Physics, Carl von Ossietzky University Oldenburg, Germany
    • Pius-Hospital, Clinic for Radiotherapy and Oncology, Oldenburg, Germany
  • ,
  • Dietrich Harder

      Affiliations

    • Medical Physics and Biophysics, Georg August University, Göttingen, Germany
  • ,
  • Kay C. Willborn

      Affiliations

    • Pius-Hospital, Clinic for Radiotherapy and Oncology, Oldenburg, Germany

Received 7 July 2009 ,Revised 15 December 2009 ,Accepted 29 December 2009.

References 

  1. Ezzel GA, Galvin JM, Low D, Palta JR, Rosen I, Sharpe MB, et al. Guidance on delivery, treatment planning, and clinical implementation of IMRT: report of the IMRT subcommittee of the AAPM radiation therapy committee. Med Phys. 2003;30:2089–2115
  2. Poppe B, Mehran P, Kollhoff R, Rubach A. Use of a two-dimensional ionization-chamber array for quality assurance at medical linear accelerators (in German). Z Med Phys. 2003;13:115–122
  3. Poppe B, Atem Tung Z, Chofor G, Blechschmidt A, Djouguela A, Kollhoff R, et al. On the resolution and the sensitivity of 2-dimensional ionization chamber array (PTW Type 10024) (in German). Z Med Phys. 2005;4:287–291
  4. Poppe B, Blechschmidt A, Djouguela A, Kollhoff R, Rubach A, Harder D. Two-dimensional ionisation-chamber arrays for IMRT plan verification. Med Phys. 2006;33:1005–1015
  5. Wiezorek T, Banz N, Schwedas M, Scheithauer M, Salz H, Georg D, et al. Dosimetric quality assurance for intensity-modulated radiotherapy feasibility study for a filmless approach. Strahlenther Onkol. 2005;181:468–474
  6. Watts RJ. Evaluation of a diode detector array for use as a linear accelerator QC device. Med Phys. 1998;25:247–250
  7. Jursinic PA, Nelms BE. A 2-D diode array and analysis software for verification of intensity modulated radiation therapy delivery. Med Phys. 2003;30:870–879
  8. Cilla S, Viola P, Azario L, Grimaldi L, Craus M, D’Onofrio G, et al. Comparison of measured and computed portal dose for IMRT treatment. J Appl Clin Med Phys. 2006;7:65–79
  9. Létourneau D, Gulam M, Yan D, Oldham M, Wong JW. Evaluation of a 2D diode array for IMRT quality assurance. Radiother Oncol. 2004;70:199–206
  10. Van Esch A, Depuydt T, Huyskens DP. The use of an aSi-based EPID for routine absolute dosimetric pre-treatment verification of dynamic IMRT fields. Radiother Oncol. 2004;71:223–234
  11. Poppe B, Thieke C, Beyer D, Kollhoff R, Djouguela A, Rühmann A, et al. DAVID – a translucent multi-wire transmission ionisation chamber for in vivo verification of IMRT and conformal irradiation techniques. Phys Med Biol. 2006;51:1237–1248
  12. Venkataraman S, Malkoske K, Jensen M, Nakonechny KD, Asuni G, Mc Curdy BM. The influence of a novel transmission detector on 6 MV X-ray beam characteristics. Phys Med Biol. 2009;54:3173–3183
  13. Islam MK, Norrlinger BD, Smale JR, Heaton RK, Galbraith D, Fan C, et al. An integral quality monitoring system for real-time verification of intensity modulated radiation therapy. Med Phys. 2009;36:5420–5428
  14. Dempsey JF, Romeijn HE, Li JG, Low DA, Palta JR. A Fourier analysis of the dose grid resolution required for accurate IMRT fluence map optimization. Med Phys. 2005;32:380–388
  15. Kaminski H, Rubach A. Development of a personal computer based record and verify system (in German). In: Leitner H, Stuecklschweiger G, editors. Medizinische Physik, Graz; 1996. p. 155–66. ISBN: 3-925218-61-0.
  16. DIN6800-2: Procedures of dosimetry with probe-type detectors for photon and electron radiation: Part 2. Ionization chamber dosimetry of high-energy photon and electron radiation. Berlin: German Institute of Standards; 2008.
  17. Poppe B, Djouguela A, Blechschmidt A, Willborn KC, Rühmann A, Harder D. Spatial resolution of 2D ionization chamber arrays for IMRT dose verification: single detector size and sampling step width. Phys Med Biol. 2007;52:2921–2935
  18. Spezi E, Angelini AL, Romani F, Ferri A. Characterization of a 2D ion chamber array for the verification of radiotherapy treatments. Phys Med Biol. 2005;50:3361–3373
  19. Van Esch A, Clermont C, Devillers M, Iori M, Huyskens DP. On-line quality assurance of rotational radiotherapy treatment delivery by means of a 2D ion chamber array and the Octavius phantom. Med Phys. 2007;34:3825–3837
  20. Abou Mandour M, Harder D. Scheinbare Reflexion schneller Elektronen bei streifendem Einfall. Z Naturforsch. 1975;30a:265–268
  21. Djouguela A, Harder D, Kollhoff R, Foschepoth S, Kunth W, Rühmann A, et al. Fourier deconvolution reveals the role of the Lorentz function as the convolution kernel of narrow photon beams. Phys Med Biol. 2009;54:2807–2827
  22. Low D, Harms WB, Mutic S, Purdy J. A technique for the quantitative evaluation of dose distributions. Med Phys. 1998;25:656–661

PII: S0167-8140(10)00018-6

doi: 10.1016/j.radonc.2009.12.041

Radiotherapy & Oncology
Volume 95, Issue 2 , Pages 158-165 , May 2010