On the use of the MLC dosimetric leaf gap as a quality control tool for accurate dynamic IMRT delivery

Medical Physics

Volumn 38, Issue 4, 2011, Pages 2246-2255

  Mei, Xiangyang ^a   Nygren, Ian ^a   Villarreal Barajas, J Eduardo ^a,b  

^a TOM BAKER CANCER CENTRE   (Canada)

^b UNIVERSITY OF CALGARY   (Canada)

Author keywords

dosimetric leaf gap; dynamic MLC; EPID; IMRT

Indexed keywords

DOSIMETRY; FULL WIDTH AT HALF MAXIMUM; IONIZATION CHAMBERS; LINEAR ACCELERATORS;

COMPREHENSIVE MEASUREMENT; DOSIMETRIC LEAF GAP; ELECTRONIC PORTAL IMAGING DEVICES; EPID; EQUIVALENT UNIFORM DOSE; IMRT; TREATMENT PLANNING SYSTEMS; TWO DIMENSIONAL DISTRIBUTION;

QUALITY CONTROL;

EID: 79953665825     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.3567148     Document Type: Article

References (12)

1. G. A. Ezzell, J. W. Burmeister, N. Dogan, T. J. LoSasso, J. G. Mechalakos, D. Mihailidis, A. Molineu, J. R. Palta, C. R. Ramsey, B. J. Salter, J. Shi, P. Xia, N. J. Yue, and Y. Xiao, "IMRT commissioning: Multiple institution planning and dosimetry comparisons, a report from AAPM Task Group 119," Med. Phys. 36(11), 5359-5373 (2009).
2. G. A. Ezzell et al., "AAPM Report: Guidance document on delivery, treatment planning, and clinical implementation of IMRT: Report of the IMRT subcommittee of the AAPM radiation therapy committee," Med. Phys. 30, 2089-2115 (2003).
3. T. LoSasso, C.-S. Chui, and C. Clifton Ling, "Comprehensive quality assurance for the delivery of intensity modulated radiotherapy with a multileaf collimator used in the dynamic mode," Med. Phys. 28(11), 2209-2219 (2001).
4. G. J. Budgell, J. H. L. Mott, P. C. Williams, and K. J. Brown, "Requirements for leaf position accuracy for dynamic multileaf collimation," Phys. Med. Biol. 45, 1211-1227 (2000).
5. G. S. Ibbott, D. S. Followill, H. A. Molineu, J. R. Lowenstein, P. E. Alvarez, and J. E. Roll, "Challenges in credentialing institutions and participants in advanced technology multi-institutional clinical trials," Int. J. Radiat. Oncol., Biol., Phys. 71, S71-S75 (2008).
6. T. LoSasso, C.-S. Chui, and C. Clifton Ling, "Physical and dosimetric aspects of a multileaf collimator system used in the dynamic mode for implementing intensity modulated radiotherapy," Med. Phys. 25, 1919-1927 (1998).
7. A. Rangel and P. Dunscombe, "Tolerances on MLC leaf position accuracy for IMRT delivery with a dynamic MLC," Med. Phys. 36, 3304-3309 (2009).
8. I. Chauvet, A. Petifils, C. Lehobey, J. Y. Kristner, Y. Brunet, R. Lembrez, G. Gaboriaud, A. Mazal, S. Zefkili, and J. C. Rosenwald, "The sliding slit test for dynamic IMRT: A useful tool for adjustment of MLC related parameters," Phys. Med. Biol. 50, 563-580 (2005).
9. C. S. Chui, S. V. Spirou, and T. LoSasso, "Testing of dynamic multileaf collimation," Med. Phys. 23, 635-641 (1996).
10. J. Chang, C. H. Obcemea, J. Sillanpaa, J. Mechalakos, and C. Burman, "Use of EPID for leaf position accuracy QA of dynamic multi-leaf collimator (DMLC) treatment," Med. Phys. 31, 2091-2096 (2004).
11. S. C. Vieira, M. L. P. Dirkx, and B. J. M. Heijmen, "Fast and accurate leaf verification for dynamic multileaf collimation using an electronic portal imaging device," Med. Phys. 29, 2034-2040 (2002).
12. T. LoSasso, A Practical Guide to Intensity-Modulated Radiation Therapy (Medical Physics, Madison, 2003), pp. 123-146.