Accuracy of dose measurements and calculations within and beyond heterogeneous tissues for 6 MV photon fields smaller than 4 cm produced by Cyberknife

Medical Physics

Volumn 35, Issue 6, 2008, Pages 2259-2266

  Wilcox, Ellen E ^a   Daskalov, George M ^a  

^a SAINT FRANCIS HOSPITAL AND MEDICAL CENTER   (United States)

Author keywords

EBT film dosimetry; Monte Carlo treatment planning; Stereotactic radiosurgery

Indexed keywords

BIOLOGICAL ORGANS; DOSIMETRY; MONTE CARLO METHODS; PHANTOMS; PHOTONS; RADIOTHERAPY;

EBT FILM DOSIMETRIES; HETEROGENEOUS MATERIALS; HIGH-RESOLUTION MEASUREMENTS; INTERNATIONAL SPECIALTY PRODUCTS; MONTE CARLO CALCULATION; STEREOTACTIC RADIOSURGERY; TREATMENT PLANNING; TREATMENT PLANNING SYSTEMS;

TISSUE;

ACCURACY; ALGORITHM; ARTICLE; BODY REGIONS; BONE; CALCULATION; DENSITY; DOSIMETRY; FILM; LUNG; LUNG CAVITY; MONTE CARLO METHOD; PHANTOM; PHOTON THERAPY; PRIORITY JOURNAL; RADIATION DOSE; STEREOTACTIC RADIOSURGERY; TREATMENT PLANNING;

EID: 44449122864     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.2912179     Document Type: Article

References (45)

1. E. B. Podgorsak, G. B. Pike, M. Pla, A. Olivier, and L. Souhami, " Radiosurgery with photon beams: Physical aspects and adequacy of linear accelerators.," Radiother. Oncol. 0167-8140 10.1016/0167-8140(90)90008-K 17, 349-358 (1990).
2. P. J. Biggs and C. C. Ling, " Electrons as the cause of the observed dmax shift with field size in high energy photon beams.," Med. Phys. 6, 291-295 (1979).
3. K. E. Sixel and E. B. Podgorsak, " Buildup region of high-energy x-ray beams in radiosurgery.," Med. Phys. 20, 761-764 (1993).
4. T. D. Solberg, F. E. Holly, A. A. F. De Salles, R. E. Wallace, and J. B. Smathers, " Implications of tissue heterogeneity for radiosurgery in head and neck tumors.," Int. J. Radiat. Oncol., Biol., Phys. 32, 235-239 (1995).
5. Y. C. Ahn, K. C. Lee, D. Y. Kim, S. J. Huh, I. H. Yeo, D. H. Lim, M. K. Kim, K. H. Shin, S. Park, and S. H. Chang, " Fractionated stereotactic radiation therapy for extracranial head and neck tumors.," Int. J. Radiat. Oncol., Biol., Phys. 48, 501-505 (2000).
6. K. Nakagawa, Y. Aoki, M. Tago, A. Terahara, and K. Ohtomo, " Megavoltage CT-assisted stereotactic radiosurgery for thoracic tumors: Original research in the treatment of thoracic neoplasms.," Int. J. Radiat. Oncol., Biol., Phys. 48, 449-457 (2000).
7. G. X. Ding, D. M. Duggan, B. Lu, D. E. Hallahan, A. Cmelak, A. Malcolm, J. Newton, M. Deeley, and C. W. Coffey, " Impact of inhomogeneity corrections on dose coverage in the treatment of lung cancer using stereotactic body radiation therapy.," Med. Phys. 34, 2985-2994 (2007).
8. F. Isbakan, Y. Ulgen, H. Bilge, Z. Ozen, O. Agus, and B. Buyuksarac, " Gamma Knife 3-D dose distribution near the area of tissue inhomogeneities by normoxic gel dosimetry.," Med. Phys. 34, 1623-1630 (2007).
9. V. Moskvin, R. Timmerman, C. D. Rosiers, M. Randall, P. D. Rosiers, P. Dittmer, and L. Papiez, " Monte Carlo simulation of the Leksell GammaKnife: Effects of heterogeneous versus homogeneous media for stereotactic radiosurgery.," Phys. Med. Biol. 49, 4879-4895 (2004).
10. S. T. Chiu-Tsao, Y. Ho, R. Shankar, L. Wang, and L. B. Harrison, " Energy dependence of response of new high sensitivity radiochromic films for megavoltage and kilovoltage radiation energies.," Med. Phys. 32, 3350-3354 (2005).
11. M. Todorovic, M. Fischer, F. Cremers, E. Thom, and R. Schmidt, " Evaluation of GafChromic EBT prototype B for external beam dose verification.," Med. Phys. 33, 1321-1328 (2006).
12. O. A. Zeidan, S. A. L. Stephenson, S. L. Meeks, T. H. Wagner, T. R. Willoughby, P. A. Kupelian, and K. M. Langen, " Characterization and use of EBT radiochromic film for IMRT dose verification.," Med. Phys. 33, 4064-4072 (2006).
13. E. Wilcox, G. Daskalov, and L. Nedialkova, " Comparison of the Epson Expression 1680 flatbed and the Vidar VXR-16 Dosimetry PRO™ film scanners for use in IMRT dosimetry using Gafchromic and radiographic film.," Med. Phys. 34, 41-48 (2007).
14. W. L. McLaughlin, C. G. Soares, J. A. Sayeg, E. C. McCullough, R. W. Kline, A. Wu, and A. H. Maitz, " The use of a radiochromic detector for the determination of stereotactic radiosurgery dose characteristics.," Med. Phys. 21, 379-388 (1994).
15. S. Devic, J. Seuntjens, E. Sham, E. B. Podgorsak, C. R. Schmidtlein, A. S. Kirov, and C. G. Soares, " Precise radiochromic film dosimetry using a flat-bed document scanner.," Med. Phys. 32, 2245-2253 (2005).
16. C. Soares and M. Lombardi, " Dosimetric characteristics of a new radiochromic film for IMRT dosimetry.," Med. Phys. 31, 1725 (2004).
17. J. Baker, L. Reinstein, and G. Gluckman, " Initial evaluation of a new radiochromic film for IMRT QA.," Med. Phys. 31, 1726 (2004).
18. B. Lynch, M. Ranade, J. Li, and J. Dempsey, " Characteristics of a new very high sensitivity radiochromic film.," Med. Phys. 31, 1837 (2004).
19. M. Ranade, B. Lynch, J. Li, and J. Dempsey, " Single fraction IMRT dose measurements using a novel radiochromic film.," Med. Phys. 31, 1839 (2004).
20. E. E. Wilcox and G. M. Daskalov, " Evaluation of Gafchromic EBT Film for CyberKnife dosimetry.," Med. Phys. 34, 1967-1974 (2007).
21. H. M. Kooy, L. A. Nedzi, J. S. Loeffler, E. Alexander III, C. W. Cheng, E. G. Mannarino, E. J. Holupka, and R. L. Siddon, " Treatment planning for stereotactic radiosurgery of intracranial lesions.," Int. J. Radiat. Oncol., Biol., Phys. 21, 683-693 (1991).
22. R. K. Rice, J. L. Hansen, G. K. Svensson, and R. L. Siddon, " Measurements of dose distributions in small beams of 6 MV x rays.," Med. Phys. 32, 1087-1099 (1987).
23. J. L. Beach, M. S. Mendiondo, and O. A. Mendiondo, " A comparison of air-cavity inhomogeneity effects for cobalt-60, 6- and 10-MV x-ray beams.," Med. Phys. 14, 140-144 (1987).
24. E. E. Klein, L. M. Chin, R. K. Rice, and B. J. Mijnheer, " The influence of air cavities on interface doses for photon beams.," Int. J. Radiat. Oncol., Biol., Phys. 27, 419-427 (1993).
25. A. K. Rustgi, M. A. Samuels, and N. Rustgi, " Influence of air inhomogeneities in radiosurgical beams.," Med. Dosim. 22, 95-100 (1997).
26. C. Martens, N. Reynaert, C. DeWagter, P. Nilsson, M. Coghe, H. Palmans, H. Thierens, and W. DeNeve, " Underdosage of the upper-airway mucosa for small fields as used in intensity-modulated radiation therapy: A comparison between radiochromic film measurements, Monte Carlo simulations, and collapsed cone convolution calculations.," Med. Phys. 29, 1528-1535 (2002).
27. H. Saitoh, T. Fujisaki, R. Sakai, and E. Kunieda, " Dose distribution of narrow beam irradiation for small lung tumor.," Int. J. Radiat. Oncol., Biol., Phys. 53, 1380-1387 (2002).
28. S. E. Davidson, G. S. Ibbott, K. L. Prado, L. Dong, Z. Liao, and D. S. Followill, " Accuracy of two heterogeneity dose calculation algorithms for IMRT in treatment plans designed using an anthropomorphic thorax phantom.," Med. Phys. 34, 1850-1857 (2007).
29. B. Vanderstraeten, N. Reynaert, L. Paelinck, I. Madani, C. De Wagter, W. De Gersem, W. De Neve, and H. Thierens, " Accuracy of patient dose calculation for lung IMRT: A comparison of Monte Carlo, convolution/ superposition, and pencil beam computations.," Med. Phys. 33, 3149-3158 (2006).
30. M. R. Arnfield, C. Hartmann Siantar, J. Siebers, P. Garmon, L. Cox, and R. Mohan, " The impact of electron transport on the accuracy of computed dose.," Med. Phys. 27, 1266-1274 (2000).
31. P. Carrasco, N. Jornet, M. A. Duch, L. Weber, M. Ginjaume, T. Eudaldo, D. Jurado, A. Ruiz, and M. Ribas, " Comparison of dose calculation algorithms in phantoms with lung equivalent heterogeneities under conditions of lateral electronic disequilibrium.," Med. Phys. 31, 2899-2911 (2004).
32. P. Carrasco, N. Jornet, M. A. Duch, V. Panettieri, L. Weber, T. Eudaldo, M. Ginjaume, and M. Ribas, " Comparison of dose calculation algorithms in slab phantoms with cortical bone equivalent heterogeneities.," Med. Phys. 34, 3323-3333 (2007).
33. T. D. Solberg, J. J. De Marco, F. E. Holly, J. B. Smathers, and A. A. F. De Salles, " Monte Carlo treatment planning for stereotactic radiosurgery.," Radiother. Oncol. 49, 73-84 (1998).
34. C.-M. Ma, E. Mok, A. Kapur, T. Pawlicki, D. Findley, S. Brain, K. Forster, and A. L. Boyer, " Clinical implementation of a Monte Carlo treatment planning system.," Med. Phys. 26, 2133-2143 (1999).
35. I. J. Chetty, P. M. Charland, N. Tyagi, D. L. McShan, B. Fraass, and A. F. Bielajew, " Photon beam relative dose validation of the DPM Monte Carlo code in lung-equivalent media.," Med. Phys. 30, 563-573 (2003).
36. I. J. Chetty, B. Curran, J. E. Cygler, J. J. DeMarco, G. Ezzell, B. A. Faddegon, I. Kawrakow, P. J. Keall, H. Liu, C.-M. C. Ma, D. W. O. Rogers. J. Seuntjens, D. Sheikh-Bagheri, and J. V. Siebers, " Report of the AAPM Task Group No. 105: Issues associated with clinical implementation of Monte Carlo-based photon and electron external beam treatment planning.," Med. Phys. 34, 4818-4853 (2007).
37. J. Deng, C.-M. Ma, J. Hai, and R. Nath, " Commissioning 6 MV photonbeams of a stereotactic radiosurgery system for Monte Carlo treatment planning.," Med. Phys. 30, 3124-3134 (2003).
38. J. Deng, T. Guerrero, C.-M. Ma, and R. Nath, " Modelling 6 MV photonbeams of a stereotactic radiosurgery system for Monte Carlo treatment planning.," Phys. Med. Biol. 49, 1689-1704 (2004).
39. F. Araki, " Monte Carlo study of a Cyberknife stereotactic radiosurgery system.," Med. Phys. 33, 2955-2963 (2006).
40. P. Francescon, S. Cora, C. Cavedon, P. Scalchi, and J. Stancanello, " Cyberknife dosimetric beam characteristics: Comparison between experimental results and Monte Carlo simulation.," Robotic Radiosurgery, Vol. 1 (The CyberKnife Society Press, Sunnyvale, CA, 2005), pp. 71-80.
41. G. X. Ding, D. M. Duggan, and C. W. Coffey, " Commissioning stereotactic radiosurgery beams using both experimental and theoretical methods.," Phys. Med. Biol. 51, 2549-2566 (2006).
42. I. Griessbach, M. Lapp, J. Bohsung, G. Gademann, and D. Harder, " Dosimetric characteristics of a new unshielded silicon diode and its application in clinical photon and electron beams.," Med. Phys. 32, 3750-3754 (2005).
43. E. E. Wilcox, G. M. Daskalov, and H. Lincoln, " On the accuracy of dose measurements for very small 6 MV photon beams: A comparison of stereotactic diodes and EBT Gafchromic film.," Proceedings of the 7th Annual CyberKnife Users' Meeting, Scottsdale, Arizona, January 23-27, 2008.
44. E. El-Khatib and S. Connors, " Conversion of ionization measurements to radiation absorbed dose in non-water density material.," Phys. Med. Biol. 37, 2083-2094 (1992).
45. J. V. Siebers, P. J. Keall, A. E. Nahum, and R. Mohan, " Converting absorbed dose to medium to absorbed dose to water for Monte Carlo based photon beam dose calculations.," Phys. Med. Biol. 45, 983-995 (2000).