Medical Dosimetry
Volume 35, Issue 1 , Pages 1-6 , Spring 2010

Commissioning a Miniature Multileaf Collimator for Small Field Radiotherapy

Received 6 June 2008 ,Accepted 29 December 2008.

References 

  1. Bjärngard BE, Tsai J-S, Rice RK. Doses on the central axes of narrow 6-MV x-ray beams. Med. Phys. 1990;17:794–799
  2. Laub WU, Wong T. The volume effect of detectors in the dosimetry of small fields used in IMRT. Med. Phys. 2003;30:341–347
  3. Pappas E, Maris TG, Papadakis A, et al. Experimental determination of the effect of detector size on profile measurements in narrow photon beams. Med. Phys. 2006;33:3700–3710
  4. Autorité de Sûreté Nucléaire (Report concerning the radiotherapy incident at the university hospital centre (CHU) in Toulouse - Rangueil Hospital). Paris: France: ASN; 2007;http://nuclear-safety.asn.fr/
  5. Duggan DM, Coffey CW. Small photon field dosimetry for stereotactic radiosurgery. Med. Dosim. 1998;23:153–159
  6. Das IJ, Ding GX, Ahnesjö A. Small fields: Nonequilibrium radiation dosimetry. Med. Phys. 2008;35:206–215
  7. McKerracher C, Thwaites DI. Assessment of new small-field detectors against standard-field detectors for practical stereotactic beam data acquisition. Phys. Med. Biol. 1999;44:2143–2160
  8. Eberle K, Engler J, Hartmann G, et al. First tests of a liquid ionization chamber to monitor intensity modulated radiation beams. Phys. Med. Biol. 2003;48:3555–3564
  9. Nill S, Tücking T, Münter MW, et al. Intensity modulated radiation therapy with multileaf collimators of different leaf widths: A comparison of achievable dose distributions. Radiother. Oncol. 2005;75:106–111
  10. Cheng C, Gao Z. SU-FF-T-416: The use of ModuMLC in combination with IG-IMRT for treating a very small eye tumor. Med. Phys. 2007;34:2497
  11. Hartmann GH, Föhlisch F. Dosimetric characterisation of a new miniature multileaf collimator. Phys. Med. Biol. 2002;47:N171–N177
  12. Cheng C-W, Das I, Gao J, et al. Physical characteristics of the Siemens 2.6mm Moduleaf collimator (mMLC). Radiother. Oncol. 2006;81:S521
  13. Crop F, Reynaert N, Pittomvils G, et al. Monte Carlo modeling of the ModuLeaf miniature MLC for small field dosimetry and quality assurance of the clinical treatment planning system. Phys. Med. Biol. 2007;52:3275–3290
  14. Meeks SL, Bova FJ, Kim S, et al. Dosimetric characteristics of a double-focused miniature multileaf collimator. Med. Phys. 1999;26:729–733
  15. Xia P, Geis P, Xing L, et al. Physical characteristics of a miniature multileaf collimator. Med. Phys. 1999;26:65–70
  16. Cosgrove VP, Jahn U, Pfaender M, et al. Commissioning of a micro multi-leaf collimator and planning system for stereotactic radiosurgery. Radiother. Oncol. 1999;50:325–336
  17. Patel I, Glendinning AG, Kirby MC. Dosimetric characteristics of the Elekta Beam Modulator. Phys. Med. Biol. 2005;51:5479–5492
  18. Tücking T, Nill S, Oelfke U. IMRT-application with an add-on MMLC. J. Appl. Clin. Med. Phys. 2003;4:282–286
  19. van Gasteren JJM, Heukelom S, van Kleffens HJ, et al. The determination of phantom and collimator scatter components of the output of megavoltage photon beams: Measurement of the collimator scatter part with a beam-coaxial narrow cylindrical phantom. Radiother. Oncol. 1991;20:250–257
  20. McKenzie AL, Stevens PH. How is photon head scatter in a linear accelerator related to the concept of a virtual source?. Phys. Med. Biol. 1993;38:1173–1180
  21. Thomas SJ, Eaton DJ, Tudor GSJ, et al. Equivalent squares for small field dosimetry. Br. J. Radiol. 2008;81:897–901
  22. De Angelis C, Onori S, Pacilo M, et al. An investigation of the operating characteristics of two PTW diamond detectors in photon and electron beams. Med. Phys. 2002;29:248–254
  23. Zhu XR, Allen JJ, Shi J, et al. Total scatter factors and tissue maximum ratios for small radiosurgery fields: Comparison of diode detectors, a parallel-plate ion chamber, and radiographic film. Med. Phys. 2000;27:472–477
  24. Ding GX, Duggan DM, Coffey CW. Commissioning stereotactic radiosurgery beams using both experimental and theoretical methods. Phys. Med. Biol. 2006;51:2549–2566
  25. Sauer OA, Wilbert J. Measurement of output factors for small photon beams. Med. Phys. 2007;34:1983–1988
  26. Zhu TC, Bjärngard BE. The head-scatter factor for small field sizes. Med. Phys. 1994;21:65–68
  27. Hounsell AR, Wilkinson JM. Head scatter modelling for irregular field shaping and beam intensity modulation. Phys. Med. Biol. 1997;42:1737–1749
  28. Weber L, Nilsson P, Ahnesjö A. Build-up cap materials for measurement of photon head-scatter factors. Phys. Med. Biol. 1997;42:1875–1886
  29. McKerracher C, Thwaites DI. Analysis of methodology for scatter measurements in small fields. Radiother. Oncol. 2002;64:S43
  30. Khan FM, Gibbons JP, Roback DM. Collimator (head) scatter at extended distances in linear accelerator-generated photon beam. Int. J. Radiat. Oncol. Biol. Phys. 1996;35:605–608
  31. Jursinic PA. Clinical implementation of a two-component x-ray source model for calculation of head-scatter factors. Med. Phys. 1997;24:2001–2007
  32. Li J, Zhu TC. Measurement of in-air output ratios using different miniphantom materials. Phys. Med. Biol. 2006;51:3819–3834
  33. Jursinic PA. Measurement of head scatter factors of linear accelerators with columnar miniphantoms. Med. Phys. 2006;33:1720–1728

PII: S0958-3947(08)00202-1

doi: 10.1016/j.meddos.2008.12.002

Medical Dosimetry
Volume 35, Issue 1 , Pages 1-6 , Spring 2010

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