The use of an electronic portal imaging system to measure portal dose and portal dose profiles

Medical Physics

Volumn 25, Issue 10, 1998, Pages 1903-1909

  Parsaei, Homayoon ^a,b   El Khatib, Ellen ^a,b   Rajapakshe, Rasika ^b  

^a UNIVERSITY OF BRITISH COLUMBIA   (Canada)

^b BRITISH COLUMBIA CANCER AGENCY   (Canada)

Author keywords

Portal dose profiles; Portal dosimetry; Portal imaging

Indexed keywords

DOSIMETRY; IMAGING SYSTEMS; IONIZATION OF LIQUIDS; SENSITIVITY ANALYSIS;

CHARACTERISTIC CURVE; DOSE PROFILE; ELECTRONIC PORTAL IMAGING; ELECTRONIC PORTAL IMAGING DEVICES; HOMOGENEOUS MATERIALS; PORTAL DOSIMETRIES; PORTAL IMAGING; SQUARE ROOT FUNCTIONS;

IONIZATION CHAMBERS;

ARTICLE; CALIBRATION; DOSIMETRY; IMAGING SYSTEM; IONIZATION CHAMBER; PHANTOM; PHOTON; PRIORITY JOURNAL; RADIATION BEAM; RADIATION DOSE; REPRODUCIBILITY;

EID: 0031789184     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.598379     Document Type: Article

References (36)

1. J. E Marks, M. D. Davis, and A. G. Haus, "Anatomic and geometric precision in radiotherapy," Radiol. Clin. Biol. 43, 1-20 (1974).
2. J. E. Marks, A. G. Haus, H. G. Sutton, and M. L. Griem, "The value of frequent verification films in reducing localization error m the irradiation of complex fields," Cancer 37, 2755-2761 (1976).
3. R. W. Byhardt, J. D. Cox, A. Hornburg, and G. Liermann, "Weekly localization films and detection of film placement errors," Int. J. Radiat. Oncol., Biol., Phys. 4, 881-887 (1978).
4. L. V. Verhey, M. Goitein, P. McNulty, JF. E. Munzenrider, and H. D. Suit, "Precise positioning of patients for radiation therapy," Int. J. Radiat Oncol., Biol, Phys. 8, 289-294 (1982).
5. I. Rabinowitz, J. Broomberg, M. Goitein, K. McCarthy, and J. Leong. "Accuracy of radiation field alignment in clinical practice," Int. J. Radiat. Oncol, Biol., Phys. 11, 1857-1867 (1985).
6. W De Neve, F. Van den Heuvel, M De Beukeleer, M Coghe, L. Thon, P. De Roover, M. Van Lancker, and G Storme, "Routine clinical on-line portal imaging followed by immediate field adjustment using a telecontrolled patient couch," Radiother. Oncol. 24, 45-54 (1992).
7. L. E. Reinstem, S. Pai, and A. G. Meek, "Assessment of geometric treatment accuracy using time lapse display of electronic portal imaging," Int. J. Radiat. Oncol., Biol., Phys. 22, 1139-1146 (1992).
8. S. Shalev, "Megavoltage portal imaging," Teletherapy: Present and Future, Proceedings of the American Association of Physicists in Medicine (AAPM) summer school, June 23-27, 1996, Vancouver, BC, Canada, pp. 445-469.
9. H. Meertens, M. van Herk, and J. Weeda, "A liquid ionization detector for digital radiography of therapeutic megavoltage photon beams," Phys. Med. Biol. 30, 313-321 (1985).
10. M. van Herk and H. Meertens, "A matrix ionization chamber imaging device for on-line patient setup verification during radiotherapy," Radiother. Oncol 11, 369-378 (1988).
11. P. Munro, J A. Rawlinson, and A. Fenster, "Therapy imaging: A signal to noise analysis of a fluoroscopic imaging system for radiotherapy localization," Med. Phys. 17, 763-772 (1990).
12. J. W. Wong, W R. Binns, A. Y. Cheng, L. Y. Gear, J. W. Epstein, J. Klarmann, and J. A. Purdy, "On-line radiotherapy imaging with an array of fiber-optic image reducers," Int. J. Radiat. Oncol., Biol., Phys. 18, 1477-1484 (1990).
13. H. Meertens, M. Van Herk, J. Bijhold, and H. Bartelink, "First clinical experience with a newly developed electronic portal imaging device," Int J. Radiat. Oncol., Biol., Phys. 18, 1173-1181 (1990).
14. E. J. Morton, W Swindell, D. G. Lewis, and P. M. Evans, "A linear array, scintillation crystal-photodiode detector for megavoltage imaging," Med Phys. 18, 681-691 (1991).
15. P. Munro, J. A Rawlinson, and A. Fenster, "A digital fluoroscopic imaging device for radiotherapy localization," Int. J Radiat. Oncol., Biol., Phys. 18, 641-649 (1991).
16. M. van Herk, "Physical aspects of liquid-filled ionization chamber with pulsed polarizing voltage," Med. Phys. 18, 692-702 (1991).
17. L. E. Antonuk, J. Boudry, W. Huang, D. L. McShan, E J Morton, J. Yorkston, M. J. Longo, and R. A. Street, "Demonstration of megavoltage and diagnostic x-ray imaging with hydrogenated amorphous silicon arrays," Med. Phys. 19, 1455-1466 (1992).
18. A. L. Boyer, L. Antonuk, A. Fenster, M. Van Herk, H. Meertens, P. Munro, L. E. Reinstein, and J. Wong, "A review of electronic portal imaging devices (EPIDs)," Med. Phys. 19, 1-16 (1992).
19. M. van Herk, J. Bijhold, B Hoogervorst, and H. Meetens, "Sampling methods for a matrix chamber system," Med. Phys. 19, 409-418 (1992).
20. F. F. Yin, M. C. Schell, and P. Rubin, "Input/output characteristics of a matrix ion-chamber electronic portal imaging device," Med. Phys. 21, 1447-1454 (1994).
21. J. W Wong, E. D. Slessinger, R. E. Hermes, C. J. Offutt, T. Roy, and M. W. Vannier, "Portal dose images. I. Quantitative treatment plan verification," Int. J. Radiat. Oncol., Biol., Phys. 18, 1455-1463 (1990).
22. X. Ying, L. Y. Geer, and J. W. Wong, "Portal dose images. II. Patient dose estimation," Int. J. Radiat. Oncol., Biol., Phys. 18, 1465-1475 (1990).
23. M. C. Kirby and P. C. Williams, "The use of an electronic portal imaging device for exit dosimetry and quality control measurements," Int. J. Radiat. Oncol., Biol., Phys. 31, 593-603 (1995).
24. Y. Zhu, X. Jiang, and J. Van Dyk, "Portal dosimetry using a liquid ion chamber matrix: Dose response studies," Med. Phys. 22, 1101-1106 (1995).
25. F. F. Yin, M. C. Schell, and P. Rubin, "A technique of automating compensator design for lung correction using an electron portal imaging device," Med. Phys. 21, 1729-1732 (1994).
26. D. A. Low, Z. Li, and E. E. Klein, "Verification of milled two-dimensional photon compensating filters using an electronic portal imaging device," Med. Phys. 23, 929-938 (1996).
27. C. Fiorino, A. del Veccchio, G. M. Cattaneo, M. Fusca, B. Longobardi, P. Signorotto, and R. Calandrino, "Exit dose measurements by portal film dosimetry," Radiother. Oncol. 29, 336-340 (1993).
28. M. C. Kirby and P. C. Williams, "Measurement possibilities using an electronic portal imaging device," Radiother. Oncol. 29, 237-243 (1993).
29. S. Heukelom, J. H. Lanson, and B. J. Mijnheer, "Comparison of entrance and exit dose measurements using ionization chambers and diodes," Phys. Med. Biol. 36, 47-59 (1991).
30. J. R. McNutt, T. R. Mackie, P. Reckwerdt, and B. R. Paliwal, "Modeling dose distributions from portal dose images using the convolution/ superposition method," Med. Phys. 23, 1381-1392 (1996).
31. R. Boellaard, M. van Herk, and B. J. Mijnheer, "The dose response relationship of a liquid-filled electronic portal imaging device," Med Phys. 23, 1601-1611 (1996).
32. M. Essers, B. R. Hoogervorst, M. van Herk, H. Lanson, and B. J. Mijnheer, "Dosimetric characteristics of a liquid-filled electronic portal imaging device," Int. J. Radiat. Oncol., Biol., Phys. 33, 1265-1272 (1995).
33. Amencan Association of Physicists in Medicine, RTC Task Group 21, "A protocol for the determination of absorbed dose from high energy photon and electron beams," Med. Phys. 10, 741-769 (1983).
34. M. Essers, R. Boellaard, M. van Herk, H. Lanson, and B. Mijnheer, "Transmission dosimetry with a liquid filled electronic portal imaging device," Int. J Radiat. Oncol, Biol., Phys. 34, 931-941 (1996).
35. J. Van Dam, C. Vaerman, N. Blanckaert, G. Leunens, A. Dutreix, and E. van der Schueren, "Are port films reliable for in vivo exit dose measurements?" Radiother. Oncol. 25, 67-72 (1992).
36. D. Huyskens, J. Van Dam, and A. Dutreix, "Midplane dose determination using in vivo dose measurements in combination with portal imaging," Phys. Med. Biol. 39, 1089-1101 (1194).