Technical note: Potential errors in optical density measurements due to scanning side in EBT and EBT2 Gafchromic film dosimetry

Medical Physics

Volumn 37, Issue 4, 2010, Pages 1565-1570

  Desroches, Joannie ^a   Bouchard, Hugo ^a,b   Lacroix, Fŕd́ric ^a,b  

^a CENTRE HOSPITALIER DE L UNIVERSITÉ DE MONTRÉAL   (Canada)

^b 2900 Boulevard Edouard Montpetit   (Canada)

Author keywords

Dosimetry; EBT; EBT2; Optical density; Radiochromic film

Indexed keywords

CALIBRATION; DENSITY (OPTICAL); DENSITY MEASUREMENT (OPTICAL); DOSIMETRY; ERRORS; SCANNING; TRANSMISSIONS;

ANGULAR ORIENTATION; APPLICATION EXAMPLES; DENSITY DIFFERENCE; EBT2; INTENSITY-MODULATED RADIOTHERAPY; PROCESS CONSISTENCY; RADIOCHROMIC FILM; REFLECTION AND TRANSMISSION;

OPTICAL FILMS;

ARTICLE; CALIBRATION; COMPUTER PROGRAM; COMPUTER SIMULATION; EQUIPMENT; FILM DOSIMETER; HUMAN; INTENSITY MODULATED RADIATION THERAPY; METHODOLOGY; OPTICS; RADIATION DOSE; RADIATION RESPONSE; RADIOMETRY; REPRODUCIBILITY;

CALIBRATION; COMPUTER SIMULATION; DOSE-RESPONSE RELATIONSHIP, RADIATION; EQUIPMENT FAILURE ANALYSIS; FILM DOSIMETRY; HUMANS; OPTICS AND PHOTONICS; RADIOMETRY; RADIOTHERAPY DOSAGE; RADIOTHERAPY, INTENSITY-MODULATED; REPRODUCIBILITY OF RESULTS; SOFTWARE;

EID: 77950579345     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.3355895     Document Type: Article

References (25)

1. 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. 0094-2405 33, 4064-4072 (2006). 10.1118/1.2360012 (Pubitemid 44673098)
2. M. Todorovic, M. Fischer, F. Cremers, E. Thom, and R. Schmidt, " Evaluation of GafChromic EBT prototype B for external beam dose verification.," Med. Phys. 0094-2405 33, 1321-1328 (2006). 10.1118/1.2188077
3. A. Niroomand-Rad, C. R. Blackwell, B. M. Coursey, K. P. Gall, J. M. Galvin, W. L. McLaughlin, A. S. Meigooni, R. Nath, J. E. Rodgers, and C. G. Soares, " Radiochromic film dosimetry: Recommendations of AAPM Radiation Therapy Committee Task Group 55.," Med. Phys. 0094-2405 25, 2093-2115 (1998). 10.1118/1.598407 (Pubitemid 28530099)
4. M. J. Butson, T. Cheung, and P. K. N. Yu, " Weak energy dependence of EBT gafchromic film dose response in the 50 kVp-10 MVp x-ray range.," Appl. Radiat. Isot. 0969-8043 64 (1), 60-62 (2006). 10.1016/j.apradiso.2005.07. 002 (Pubitemid 41550172)
5. S. Devic, N. Tomic, Z. Pang, J. Seuntjens, E. B. Podgorsak, and C. G. Soares, " Absorption spectroscopy of EBT model GAFCHROMIC film.," Med. Phys. 0094-2405 34, 112-118 (2007). 10.1118/1.2400615 (Pubitemid 46035233)
6. 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. 0094-2405 32, 3350-3354 (2005). 10.1118/1.2065467 (Pubitemid 41689286)
7. C. Richter, J. Pawelke, L. Karsch, and J. Woithe, " Energy dependence of EBT-1 radiochromic film response for photon (10 kVp-15 MVp) and electron beams (6-18 MeV) readout by a flatbed scanner.," Med. Phys. 0094-2405 36, 5506-5514 (2009). 10.1118/1.3253902
8. A. Rink, I. A. Vitkin, and D. A. Jaffray, " Energy dependence (75 kVp to 18 MV) of radiochromic films assessed using a real-time optical dosimeter.," Med. Phys. 0094-2405 34, 458-463 (2007). 10.1118/1.2431425 (Pubitemid 46185123)
9. S. Devic, J. Seuntjens, W. Abdel-Rahman, M. Evans, M. Olivares, E. B. Podgorsak, T. Vuong, and C. G. Soares, " Accurate skin dose measurements using radiochromic film in clinical applications.," Med. Phys. 0094-2405 33, 1116-1124 (2006). 10.1118/1.2179169
10. S. -T. Chiu-Tsao and M. F. Chan, " Photon beam dosimetry in the superficial buildup region using radiochromic EBT film stack.," Med. Phys. 0094-2405 36, 2074-2083 (2009). 10.1118/1.3125134
11. Z. -Y. Qi, X. -W. Deng, S. -M. Huang, L. Zhang, Z. -C. He, X. A. Li, I. Kwan, M. Lerch, D. Cutajar, P. Metcalfe, and A. Rosenfeld, " In vivo verification of superficial dose for head and neck treatments using intensity-modulated techniques.," Med. Phys. 0094-2405 36, 59-70 (2009). 10.1118/1.3030951
12. A. Rink, I. A. Vitkin, and D. A. Jaffray, " Characterization and real-time optical measurements of the ionizing radiation dose response for a new radiochromic medium.," Med. Phys. 0094-2405 32, 2510-2516 (2005). 10.1118/1.1951447 (Pubitemid 41197188)
13. A. Rink, D. F. Lewis, S. Varma, I. A. Vitkin, and D. A. Jaffray, " Temperature and hydration effects on absorbance spectra and radiation sensitivity of a radiochromic medium.," Med. Phys. 0094-2405 35, 4545-4555 (2008). 10.1118/1.2975483
14. C. L. Fletcher and J. A. Mills, " An assessment of GafChromic film for measuring 50 kV and 100 kV percentage depth dose curves.," Phys. Med. Biol. 0031-9155 53, N209-N218 (2008). 10.1088/0031-9155/53/11/N02 (Pubitemid 351868626)
15. M. Martišíková, B. Ackermanna, S. Klemma, and O. Jäkela, " Use of Gafchromic EBT films in heavy ion therapy.," Nucl. Instrum. Methods Phys. Res. A 0168-9002 591 (1), 171-173 (2008). 10.1016/j.nima.2008.03.088
16. E. E. Wilcox and G. M. Daskalov, " Accuracy of dose measurements and calculations within and beyond heterogeneous tissues for 6 MV photon fields smaller than 4 cm produced by Cyberknife.," Med. Phys. 0094-2405 35, 2259-2266 (2008). 10.1118/1.2912179 (Pubitemid 351752943)
17. I. J. Das, C.-W. Cheng, R. J. Watts, A. Ahnesjö, J. Gibbons, X. A. Li, J. Lowenstein, R. K. Mitra, W. E. Simon, and T. C. Zhu, " Accelerator beam data commissioning equipment and procedures: Report of the TG-106 of the Therapy Physics Committee of the AAPM.," Med. Phys. 0094-2405 35, 4186-4215 (2008). 10.1118/1.2969070
18. H. Bouchard, F. Lacroix, G. Beaudoin, J. -F. Carrier, and I. Kawrakow, " On the characterization and uncertainty analysis of radiochromic film dosimetry.," Med. Phys. 0094-2405 36, 1931-1946 (2009). 10.1118/1.3121488
19. N. V. Klassen, L. van der Zwan, and J. Cygler, " GafChromic MD-55: Investigated as a precision dosimeter.," Med. Phys. 0094-2405 24, 1924-1934 (1997). 10.1118/1.598106 (Pubitemid 28013507)
20. " Guide to the expression of uncertainty in measurement. " (International Standards Organization, Geneva, Switzerland, 1995).
21. EBT2 White Paper, Revision 1, International Specialty Products, available at: www.gafchromic.com.
22. S. Saur and J. Frengen, " GafChromic EBT film dosimetry with flatbed CCD scanner: A novel background correction method and full dose uncertainty analysis.," Med. Phys. 0094-2405 35, 3094-3101 (2008). 10.1118/1.2938522 (Pubitemid 351904513)
23. S. Devic, J. Seuntjens, G. Hegyi, E. B. Podgorsak, C. G. Soares, A. S. Kirov, I. Ali, J. F. Williamson, and A. Elizondo, " Dosimetric properties of improved GafChromic films for seven different digitizers.," Med. Phys. 0094-2405 31, 2392-2401 (2004). 10.1118/1.1776691 (Pubitemid 39287852)
24. Gafchromic EBT2 Scan Handling Guide, International Specialty Products, available at: www.gafchromic.com.
25. B. D. Lynch, J. Kozelka, M. K. Ranade, J. G. Li, W. E. Simon, and J. F. Dempsey, " Important considerations for radiochromic film dosimetry with flatbed CCD scanners and EBT GAFCHROMIC film.," Med. Phys. 0094-2405 33, 4551-4556 (2006). 10.1118/1.2370505 (Pubitemid 44868091)