Detector line spread functions determined analytically by transport of Compton recoil electrons

Medical Physics

Volumn 28, Issue 5, 2001, Pages 738-751

  Van't Veld, A A ^a   Van Luijk, P ^b   Praamstra, F ^a   Van Der Hulst, P C ^a  

^a UNIVERSITY MEDICAL CENTER GRONINGEN   (Netherlands)

^b UNIVERSITY OF GRONINGEN   (Netherlands)

Author keywords

Detector response; Ionization chamber; Line spread function; Penumbra broadening; Relative dosimetry

Indexed keywords

ANALYTICAL MODELS; DIODES; DISPLAY DEVICES; DOSIMETERS; DOSIMETRY; ELECTRON TRANSPORT PROPERTIES; IONIZATION; IONIZATION CHAMBERS;

CONFORMAL RADIATION THERAPY; DETECTOR RESPONSE; EXPERIMENTAL DETERMINATION; GEOMETRICAL CONSIDERATIONS; LINE SPREAD FUNCTIONS; MULTIPLE-SCATTERING THEORY; PENUMBRA BROADENING; RECONSTRUCTION TECHNIQUES;

X RAY DETECTORS;

ARTICLE; DOSE CALCULATION; DOSIMETER; DOSIMETRY; ELECTRON TRANSPORT; IONIZATION CHAMBER; PRIORITY JOURNAL; PROTON RADIATION; RADIATION BEAM; RADIATION DETECTION; RADIATION DOSE;

EID: 0035012499     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.1366665     Document Type: Article

References (31)

1. M. Westermark, J. Arndt, B. Nilsson, and A. Brahme, "Comparative dosimetry in narrow high-energy photon beams," Phys. Med. Biol. 45, 685-702 (2000).
2. T. Ackerly, S. Todd, I. Williams, M. Geso, and J. Cramb, "Comparative evaluation of Wellhöfer ion chamber array and Scanditronix diode array for dynamic wedge dosimetry," Australas. Phys. Eng. Sci. Med. 20, 71-83 (1997).
3. C. Martens, C. De Wagter, and W. De Neve, "The value of the PinPoint ion chamber for characterization of small field segments used in intensity-modulated radiotherapy," Phys. Med. Biol. 45, 2519-2530 (2000).
4. T. C. Zhu and J. R. Palta, "Electron contamination in 8 and 18 MV photon beams," Med. Phys. 25, 12-19 (1998).
5. A. S. Beddar, T. R. Mackie, and F. H. Attix, "Water-equivalent plastic scintillation detectors for high-energy beams: II. Properties and measurements," Phys. Med. Biol. 37, 1901-1913 (1992).
6. P. Metcalfe, T. Kron, A. Elliot, T. Wong, and P. Hoban, "Dosimetry of 6-MV x-ray beam penumbra," Med. Phys. 20, 1439-1445 (1993).
7. D. J. Dawson, J. M. Harper, and A. C. Akinradewo, "Analysis of physical parameters associated with the measurement of high-energy x-ray penumbra," Med. Phys. 11, 491-497 (1984).
8. F. García-Vicente, J. M. Delgado, and C. Peraza, "Experimental determination of the convolution kernel for the study of the spatial response of a detector," Med. Phys. 25, 202-207 (1998).
9. G. Rikner and E. Grusell, "General specifications for silicon semiconductors for use in radiation dosimetry," Phys. Med. Biol. 32, 1109-1117 (1987).
10. A. A. van 't Veld, P. van Luijk, F. Praamstra, and P. C. van der Hulst, "Slit x-ray beam primary dose profiles determined by analytical transport of Compton recoil electrons," Med. Phys. 27, 923-934 (2000).
11. H. E. Johns and J. R. Cunningham, The Physics of Radiology (C. C. Thomas, Springfield, IL, 1983), pp. 175-181.
12. R. D. Evans, Radiation Dosimetry, Vol. I, Fundamentals, edited by F. H. Attix and W. C. Roesch (Academic, New York, 1968), pp. 106-109.
13. D. Jette, "Electron dose calculation using multiple-scattering theory. A. Gaussian multiple-scattering theory," Med. Phys. 15, 123-137 (1988).
14. 'Dose Formalism and Models in Helax-TMS' (Helax AB, Uppsala, 1998), pp. 104-106.
15. "Radiation dosimetry: Electron beams with energies between 1 and 50 MeV," International Commission on Radiation Units and Measurements, Report 35, ICRU, Bethesda, MD 1984.
16. C. H. Sibata, H. C. Mota, A. S. Beddar, P. D. Higgins, and K. H. Shin, "Influence of detector size in photon beam profile measurements," Phys. Med. Biol. 36, 621-631 (1991).
17. P. D. Higgins, C. H. Sibata, L. Siskind, and J. W. Sohn, "Deconvolution of detector size effect for small field measurement," Med. Phys. 22, 1663-1666 (1995).
18. F. García-Vincente, J. M. Delgado, and C. Rodríguez, "Exact analytical solution of the convolution integral equation for a general profile fitting function and Gaussian detector kernel," Phys. Med. Biol. 45, 645-650 (2000).
19. P. Charland, E. El-Khatib, and J. Wolters, "The use of deconvolution and total least squares in recovering a radiation detector line spread function," Med. Phys. 25, 152-160 (1998).
20. A. N. Schreuder, D. L. T. Jones, and A. Kiefer, "A small ionization chamber for dose distribution measurements in a clinical proton beam," Advances in Hadrontherapy, edited by U. Amaldi, B. Larsson, and Y. Lemoigne (Elsevier, Amsterdam, 1997), pp. 284-289.
21. G. Rikner and E. Grusell, "Selective shielding of a p-Si detector for quality independence," Acta Radiol.: Oncol. 24, 65-69 (1985).
22. L. A. Shepp and Y. Vardi, "Maximum likelihood reconstruction for emission tomography," IEEE Trans. Med. Imaging MI-1, 113-122 (1982).
23. D. L. Snyder, M. I. Miller, L. J. Thomas, and D. G. Politte, "Noise and edge artefacts in maximum-likelihood reconstructions for emission tomography," IEEE Trans. Med. Imaging MI-6, 228-238 (1987).
24. P. N. Mobit and G. A. Sandison, "A Monte Carlo comparison in the response of the PTW-diamond and the TL-diamond detectors in megavoltage photon beams," Med. Phys. 26, 2503-2507 (1999).
25. A. Ahnesjö and P. Andreo, "Determination of effective bremsstrahlung spectra and electron contamination for photon dose calculations," Phys. Med. Biol. 34, 1451-1464 (1989).
26. B. E. Bjärngard, J.-S. Tsai, and R. K. Rice, "Dose on the central axes of narrow 6-MV x-ray beams," Med. Phys. 17, 794-799 (1990).
27. L. Wang and D. Jette, "Photon dose calculation based on electron multiple-scattering theory: Primary dose deposition kernels," Med. Phys. 26, 1454-1465 (1999).
28. D. J. Dawson and A. C. Akinradewo, "Characteristics of cobalt-60 penumbral regions," Med. Phys. 12, 389-392 (1985).
29. D. J. Dawson, N. J. Schroeder, and J. D. Hoya, "Penumbral measurements in water for high-energy x-rays," Med. Phys. 13, 101-104 (1986).
30. A. Ahnesjö, M. Saxner, and A. Trepp, "A pencil beam model for photon dose calculations," Med. Phys. 19, 263-273 (1990).
31. S. N. Rustgi and D. M. D. Frye, "Dosimetric characterization of radiosurgical beams with a diamond detector," Med. Phys. 22, 2117-2121 (1995).