The effects of divergence and nonuniformity on the x-ray pencil-beam dose kernel

Medical Physics

Volumn 23, Issue 9, 1996, Pages 1531-1535

  Ceberg, Crister P ^a   Bjärngard, Bengt E ^b  

^a LUND UNIVERSITY HOSPITAL   (Sweden)

^b HOSPITAL OF THE UNIVERSITY OF PENNSYLVANIA   (United States)

Author keywords

divergence; experimental; nonuniformity; pencil beam

Indexed keywords

COMPUTERIZED TOMOGRAPHY; NUCLEAR INSTRUMENTATION;

CORRECTION FACTORS; DIVERGENCE; EXPERIMENTAL; HIGH ENERGY X RAY; NONUNIFORMITY; PENCIL BEAM; SCATTER-TO-PRIMARY RATIO; SCATTERED PHOTONS;

X RAYS;

ARTICLE; CALCULATION; PRIORITY JOURNAL; RADIATION PHYSICS; RADIATION SCATTERING; THEORY; X RAY;

EID: 0029813609     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.597884     Document Type: Article

References (13)

1. C. P. Ceberg, B. E. Bjarngard, and T. C. Zhu, "Experimental determination of the dose kernel in high-energy x-ray beams," Med. Phys 23, 505-511 (1996).
2. A. Ahnesjö, M. Saxner, and A. Trepp, "A pencil beam model for photon dose calculations," Med. Phys. 19, 262-273 (1992).
3. M. K. Woo, J. R. Cunningham, and J. J. Jezioranski, "Extending the concept of primary and scatter separation to the condition of electronic disequilibrium," Med. Phys. 17, 588-595 (1990).
4. C. S. Chui and R. Mohan, "Extraction of pencil-beam kernels by the deconvolution method," Med. Phys. 15, 138-144 (1988).
5. D. A. Low, X. R. Zhu, W. B. Harms, and J. A. Purdy, "Measurement of a penumbra generating kernel for a convolution-adapted ratio-TAR algorithm for 3D treatment planning," Med. Phys. 22, 1395-1403 (1995).
6. A. Boyer and E. Mok, "A photon dose distribution model employing convolution calculations," Med. Phys. 12, 169-177 (1985).
7. T. R. Mackie, J. W. Scrimger, and J. J. Battista, "A convolution method of calculating dose for 15-MV x-rays," Med. Phys. 12, 188-196 (1985).
8. A. Ahnesjö, "Invariance of convolution kernels applied to dose calculations for photon beams," in The Use of Computers in Radiation Therapy, edited by I. A. D. Bruinvis, P. H. van der Giessen, and H. J. van Klettens (Elsevier, Amsterdam, 1987), pp. 99-102.
9. H. E. Johns, W. R Bruce, and W. B. Reid, "The dependence of depth dose on focal skin distance," Br. J. Radiol. 31, 254-260 (1958).
10. B. E. Bjärngard and H. Shackford, "Attenuation in high-energy x-ray beams," Med. Phys. 21, 1069-1073 (1994).
11. B E Bjärngard and P. Vadash, "Analysis of central-axis doses for high-energy x-rays," Med. Phys. 22, 1191-1195 (1995).
12. B. E. Bjärngard and R. L. Siddon, "A note on equivalent circles, squares and rectangles," Med. Phys. 9, 258-260 (1982).
13. A. Ahnesjö and A. Trepp, "Acquisition of the effective lateral energy fluence distribution for photon beam dose calculations by convolution models," Phys. Med. Biol. 36, 973-985 (1991).