Using multileaf collimator interleaf leakage to extract absolute spatial information from electronic portal imaging device images

Journal of Applied Clinical Medical Physics

Volumn 8, Issue 1, 2007, Pages 1-9

  Gao, Zhanrong ^a,c   Szanto, Janos ^a,b   Gerig, Lee ^a,b  

^a CARLETON UNIVERSITY   (Canada)

^b OTTAWA REGIONAL CANCER CENTRE   (Canada)

^c MORRISTOWN MEMORIAL HOSPITAL   (United States)

Author keywords

EPID; Isocenter; Mechanical consistency; Orientation correction; Radon transform

Indexed keywords

EID: 34247390036     PISSN: None     EISSN: 15269914     Source Type: Journal    
DOI: 10.1120/jacmp.v8i1.2226     Document Type: Article

References (20)

1. Boyer AL, Antonuk L, Fenster A, et al. A review of electronic portal imaging devices (EPIDs). Med Phys. 1992;19(1):1-16.
2. Antonuk LE. Electronic portal imaging devices: a review and historical perspective of contemporary technologies and research. Phys Med Biol. 2002;47(6):R31-R65.
3. Pisano ED, Zong S, Hemminger BM, et al. Contrast limited adaptive histogram equalization image processing to improve the detection of simulated spiculations in dense mammograms. J Digit Imaging. 1998;11(4):193-200.
4. Damiani F, Maggio A, Micela G, Sciortino S. A source detection method for ROSAT/PSPC X-ray images based on wavelet transforms. In: Jacoby GH, Barnes J, editors. Astronomical data analysis software and systems V. ASP Conference Series. Vol. CS-101. San Francisco (CA): Astronomical Society of the Pacific; 1996: 143-146.
5. Buck D, Alber M, Nusslin F. Potential and limitations of the automatic detection of fiducial markers using an amorphous silicon flat-panel imager. Phys Med Biol. 2003;48(6):763-774.
6. Gonzalez RC, Woods RE. Digital image processing. 2nd edition. Upper Saddle River, NJ: Prentice Hall; 2002. 793 p.
7. Baily NA, Rimkus D, Nalcioglu O. Normalization (division) versus subtraction of digitized images. Med Phys. 1983;10(1):25-28.
8. Nederveen AJ, van der Heide UA, Dehnad H, van Moorselaar RJ, Hofman P, Lagendijk JJ. Measurements and clinical consequences of prostate motion during a radiotherapy fraction. Int J Radiat Oncol Biol Phys. 2002;53(1):206-214.
9. Bijhold J, Gilhuijs KG, van Herk M. Automatic verification of radiation field shape using digital portal images. Med Phys. 1992;19(4):1007-1014.
10. Shimizu S, Shirato H, Kitamura K, et al. Use of an implanted marker and real-time tracking of the marker for the positioning of prostate and bladder cancers. Int J Radiat Oncol Biol Phys. 2000;48(5):1591-1597.
11. Wu J, Haycocks T, Alasti H, et al. Positioning errors and prostate motion during conformal prostate radiotherapy using on-line isocentre set-up verification and implanted prostate markers. Radiother Oncol. 2001;61(2):127-133.
12. Alasti H, Petric MP, Catton CN, Warde PR. Portal imaging for evaluation of daily on-line setup errors and offline organ motion during conformal irradiation of carcinoma of the prostate. Int J Radiat Oncol Biol Phys. 2001;49(3):869-884.
13. Dehnad H, Nederveen AJ, van der Heide UA, van Moorselaar RJ, Hofman P, Lagendijk JJ. Clinical feasibility study for the use of implanted gold seeds in the prostate as reliable positioning markers during megavoltage irradiation. Radiother Oncol. 2003;67(3):295-302.
14. Bijhold J, Gilhuijs KG, van Herk M, Meertens H. Radiation field edge detection in portal images. Phys Med Biol. 1991;36(12):1705-1710.
15. Aubin M, Morin O, Chen J, et al. The use of megavoltage cone-beam CT to complement CT for target definition in pelvic radiotherapy in the presence of hip replacement. Br J Radiol. 2006;79(947):918-921.
16. Webb S. IMRT using multi-leaf collimator. In: Webb S. Intensity-modulated radiation therapy. Philadelphia (PA): Institute of Physics Publishing; 2001: 74-78. 435 p.
17. Bracewell RN. The Fourier transform and its applications. 2nd edition. New York (NY): McGraw-Hill; 1986. 474 p.
18. Toft P. The Radon transform - theory and implementation [PhD thesis]. Lyngby, Denmark: Denmark Technical University; 1996: 1-23. 326 p.
19. Khamene A, Bloch P, Wein W, Svatos M, Sauer F. Automatic registration of portal images and volumetric CT for patient positioning in radiation therapy. Med Image Anal. 2006;10(1):96-112.
20. Herman MG, Balter JM, Jaffray DA, et al. Clinical use of electronic portal imaging: report of AAPM Radiation Therapy Committee Task Group 58. Med Phys. 2001;28(5):712-737.