Developments in megavoltage cone beam CT with an amorphous silicon EPID: Reduction of exposure and synchronization with respiratory gating

Medical Physics

Volumn 32, Issue 3, 2005, Pages 819-829

  Sillanpaa, J ^a   Chang, J ^a   Mageras, G ^a   Riem, H ^b   Ford, E ^c   Todor, D ^d   Ling, C C ^a   Amols, H ^a  

^a MEMORIAL SLOAN KETTERING CANCER CENTER   (United States)

^b VARIAN MEDICAL SYSTEMS   (Switzerland)

^c VA Puget Sound   (United States)

^d VIRGINIA COMMONWEALTH UNIVERSITY   (United States)

Author keywords

Cone beam CT; Electronic portal imaging device; Setup verfication

Indexed keywords

AMORPHOUS SILICON; BIOLOGICAL ORGANS; GATING AND FEEDING; IMAGE ACQUISITION; IMAGE RECONSTRUCTION; LINEAR ACCELERATORS; PHANTOMS; RADIOTHERAPY; RESPIRATORY MECHANICS; TUMORS;

CONE-BEAM CT; ELECTRONIC PORTAL IMAGING DEVICES; MEGA-VOLTAGE CONE BEAM; MEGAVOLTAGE CONE-BEAM CT; NON SMALL CELL LUNG CANCER; THREEDIMENSIONAL (3-D); TOMOGRAPHIC RECONSTRUCTION; VERFICATION;

COMPUTERIZED TOMOGRAPHY;

COPPER; SILICON;

ARTICLE; ARTIFACT; COMPUTER ASSISTED TOMOGRAPHY; DEVICE; ELECTRON; EXPOSURE; GEOMETRY; LINEAR ACCELERATOR; LUNG NON SMALL CELL CANCER; PHANTOM; PRIORITY JOURNAL; SIMULATION; TUMOR VOLUME;

EID: 15744396320     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.1861522     Document Type: Article

References (36)

1. J. M. Balter, R. K. T. Haken, and K. L. Lam, in "Treatment Setup Verification," in Teletherapy: Present and Future, edited by J. P. Palta and T.R. Mackie (Advanced Medical Publishing, Madison, WI, 1996), pp. 471-493.
2. R. G. Simpson, C. T. Chen, F. A. Grubbs, and W. Swindell, "A 4-MV CT scanner for radiation therapy: The prototype system," Med. Phys. 9, 574-579 (1982).
3. W. Swindell, R. Simpson, and J. R. Oleson, "Computed tomography with a linear accelerator with radiotherapy applications," Med. Phys. 10, 416-420 (1983).
4. D. G. Lewis, W. Swindell, E. J. Morton, P. M. Evans, and Z. R. Xiao, "A megavoltage CT scanner for radiotherapy verification," Phys. Med. Biol. 37, 1985-1999 (1992).
5. A. Brahme, B. Lind, and P. Nafstadius, "Radiotherapeutic computed tomography with scanned photon beams," Int. J. Radiat. Oncol., Biol., Phys. 13, 95-101 (1987).
6. 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).
7. K. J. Ruchala, G. H. Olivera, E. A. Schloesser, and T. R. Mackie, "Megavoltage CT on a tomotherapy system," Phys. Med. Biol. 44, 2597-2621 (1991).
8. T. R. Mackie et al., "Tomotherapy: A new concept for the delivery of dynamic conformal radiotherapy," Med. Phys. 20, 1709-1719 (1993).
9. B. M. Hesse, L. Spies, and B. A, Groh, "Tomotherapeutic portal imaging for radiation treatment verification," Phys. Med. Biol. 43, 3607-3616 (1998).
10. H. Guan and Y. Zhu, "Feasibility of megavoltage CT using an electronic portal imaging device (EPID) and a multi-level scheme algebraic reconstruction technique (MLS-ART)," Phys. Med. Biol. 43, 2925-2937 (1998).
11. S. Loose and K. W. Leszczynski, "On few-view tomographic reconstruction with megavoltage photon beams," Med. Phys. 28, 1679-1688 (2001).
12. S. Midgley, R. Millar, and J. Dudson, "A feasibility study for megavoltage cone beam CT using a commercial EPID," Phys. Med. Biol. 43, 155-169 (1998).
13. H. Guan and W. Zhu, "Feasibility of megavoltage CT using an electronic portal imaging device (EPID) and a multi-level scheme algebraic reconstruction technique (MLS-ART)," Phys. Med. Biol. 43, 2925-2937 (1998).
14. M. Mosleh-Shirazi, P. Evans, P. Swindell, S. Webb, and M. Partridge, "A cone-beam megavoltage CT scanner for treatment verification in conformal radiotherapy," Radiother. Oncol. 48, 319-328 (1998).
15. D. Jaffray and J. Siewerdsen, "Cone-beam tomography with a flat-panel imager: initial performance characterization," Med. Phys. 27, 1311-1323 (2000).
16. D. Jaffray, J. Siewerdsen, J. Wong, and A. Martinez, "Flat-panel cone-beam computed tomography for image-guided radiation therapy," Int. J. Radiat. Oncol., Biol., Phys. 53, 1337-1349 (2002).
17. B. A. Groh, J. Siewerdsen, D. Drake, J. Wong, and D. Jaffray, "A performance comparison of flat-panel imager-based MV and kV cone-beam CT," Med. Phys. 29, 967-975 (2002).
18. K. Nakagawa et al., "Technological features and clinical feasibility of megavoltage CT scanning," Eur. Radiol. 2, 184-189 (1992).
19. E. C. Ford, J. Chang, K. Mueller, K. Sidhu, D. Todor, G. Mageras, E. Yorke, C. C. Ling, and H. Amols, "Cone-beam CT with megavoltage beams and an amorphous silicon electronic portal imaging device: Potential for verification of radiotherapy of lung cancer," Med. Phys. 29, 2913-2924 (2002).
20. M. Sidhu, E. C. Ford, S. Spirou, E. Yorke, J. Chang, K. Mueller, D. Todor, K. Rosenzweig, G. Mageras, C. Chui, C. C. Ling, and H. Amols, "Optimization of conformal thoracic radiotherapy using cone-beam CT imaging for treatment verification," Int. J. Radiat. Oncol., Biol., Phys. 55, 757-767 (2003).
21. E. C. Ford, G. S. Mageras, E. Yorke, K. E. Rosenzweig, R. Wagman, and C. C. Ling, "Evaluation of respiratory movement during gated radiotherapy using film and electronic portal imaging," Int. J. Radiat. Oncol., Biol., Phys. 52, 522-531 (2002).
22. S. Erridge, Y. Seppenwoolde, S. Muller, M. van Herk, K. De Jaeger, J. Belderbos, L. Boersma, and J. Lebesque, "Portal imaging to assess set-up errors, tumor motion and tumor shrinkage during conformal radiotherapy of non-small cell lung cancer," Radiother. Oncol. 66, 75-85 (2003).
23. A. C. Kak and M. Slaney, Principles of Computerized Tomographic Imaging (IEEE, New York, 1988).
24. Report of AAPM Radiation Therapy Taskgroup No. 45, Med. Phys. 21, 1093-1121 (1994).
25. L. Dong and A. Boyer, "A portal image alignment and patient setup verification procedure using moments and correlation techniques," Phys. Med. Biol. 41, 697-723 (1996).
26. R. H. Huesman, "The effects of a finite number of projection angles and finite lateral sampling of projections on the propagation of statistical errors in transverse section reconstruction," Phys. Med. Biol. 22, 511-521 (1977).
27. L. A. Feldkamp, L. C. Davis, and J. W. Kress, "Practical cone beam algorithm," J. Opt. Soc. Am. 1, 612-619 (1984).
28. W. Swindell, E. J. Morton, P. M. Evans, and D. G. Lewis, "The Design of megavoltage projection imaging systems: some theoretical aspects," Med. Phys. 18, 855-866 (1991).
29. J. H. Siewerdsen and D. A. Jaffray, "A ghost story: Spatio-temporal response characteristics of an indirect-detection flat-panel imager," Med. Phys. 26, 1624-1641 (1999).
30. A. Van Esch, T. Depuydt, and D. P. Huyskens, "The use of an aSi-based EPID for routine absolute dosimetric pre-treatment verification of dynamic IMRT fields," Radiother. Oncol. 71, 223-234 (2004).
31. J. H. Siewerdsen, D. J. Moseley, B. Bakhtiar, S. Richard, and D. A. Jaffray, "The influence of antiscatter grids on soft-tissue detectability in cone-beam computed tomography with flat-panel detectors," Med. Phys. 31, 3506-3520 (2004).
32. J. C. Gore and P. S. Tofts, "Statistical limitations in Computed Tomography," Phys. Med. Biol. 23, 1176-1182 (1978).
33. G. Starck, L. Lonn, A. Cederblad, E. Forssell-Aronsson, L. Sjostrom, and M. Alpsten, "A method to obtain the same values of CT image noise for patients of various sizes, to minimize radiation dose," Br. J. Radiol. 75, 140-150 (2002).
34. E. C. Ford, G. S. Mageras, E. Yorke, K. E. Rosenzweig, R. Wagman, and C. C. Ling, "Evaluation of respiratory movement during gated radiotherapy using film and electronic portal imaging," Int. J. Radiat. Oncol., Biol., Phys. 52, 522-531 (2002).
35. R. Wagman, E. Yorke, E. Ford, P. Giraud, G. Mageras, B. Minsky, and K. Rosenzweig, "Respiratory gating for liver tumors: use in dose escalation," Int. J. Radiat. Oncol., Biol., Phys. 55, 659-668 (2003).
36. R. R. Galigekere, K. Wiesent, and D. W. Holdsworth, "Techniques to alleviate the effects of view aliasing artifacts in computed tomography," Med. Phys. 26, 896-904 (1999).