On absorbed dose in narrow 60Co gamma-ray beams and dosimetry of the Gamma Knife

Medical Physics

Volumn 25, Issue 12, 1998, Pages 2347-2351

  Nizin, Paul S ^a  

^a HOUSTON METHODIST HOSPITAL   (United States)

Author keywords

60Co gamma rays; Absorbed dose; Electronic disequilibrium; Gamma Knife; Narrow beams

Indexed keywords

TAR;

ABSORBED DOSE; ANALYTICAL FUNCTIONS; ELECTRONIC DISEQUILIBRIUM; GAMMA KNIFE; NARROW BEAMS;

GAMMA RAYS;

COBALT 60;

ARTICLE; COLLIMATOR; GAMMA KNIFE; GAMMA RADIATION; PHANTOM; PRIORITY JOURNAL; RADIATION DOSE; RADIATION SCATTERING; RADIOSURGERY;

EID: 0032436637     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.598444     Document Type: Article

References (19)

1. 60Co gamma-ray beams," Med. Phys. 25, 1458-1463 (1998).
2. A. L. McKenzie, " Cobalt-60 gamma-ray beams," Br. J. Radiol. Suppl. 25, 46-61 (1996).
3. A. Wu, G. Lindner, A. H. Maitz, A. M. Kalend, L. D. Lunsford, J. C. Flickinger, and W. D. Bloomer, " Physics of Gamma Knife approach on convergent beams in stereotactic radiosurgery," Int. J. Radial. Oncol., Biol., Phys. 18, 941-949 (1990).
4. R. B. Mooij (Columbia University, personal communication, 1998).
5. J. Arndt (ELEKTA Instrument, personal communication, 1998).
6. J. E. Burns, " Definition of tissue-air ratio," Br. J. Radiol. Suppl. 25, 177-182 (1996).
7. ICRU Report 23, Measurement of Absorbed Dose in a Phantom Irradiated by a Single Beam of X or Gamma Rays (ICRU, Washington, DC, 1973).
8. P. S. Nizin and X. S. Chang, " Primary dose in photon beams with lateral electron disequilibrium," Med. Phys. 18, 744-748 (1991).
9. P. S. Nizin, " Electronic equilibrium and primary dose in collimated photon beams," Med. Phys. 20, 1721-1729 (1993).
10. J. J. M. van Gasteren, S. Heukelom, H. J. van Kleffens, R. van der Laarse, J. L. M. Vanselaar, and C. F. Westermann, " The determination of phantom and collimator scatter components of the output of megavoltage photon beams: Measurements of the collimator scatter part with a beam-coaxial narrow cylindrical phantom," Radiother. Oncol. 20, 250-257 (1991).
11. c," Med. Phys. 22, 963 (1995).
12. H. E. Johns and J. R. Cunningham, The Physics of Radiology, 3rd ed. (Charles C. Thomas, Springfield, IL, 1974).
13. P. S. Nizin, " Geometrical aspects of scatter-to-primary ratio and primary dose," Med. Phys. 18, 153-160 (1991).
14. 60Co and other high-energy photon beams in water," Med. Phys. 20, 1353-1360 (1993).
15. B. E. Bjärngard and P. L. Petti, " Description of the scatter component in photon-beam data," Phys. Med. Biol. 33, 21-32 (1988).
16. K. R. Kase and G. K. Svensson, " Head scatter data for several linear accelerators (4-18 MV)," Med. Phys. 13, 530-532 (1986).
17. F. M. Khan, The Physics of Radiation Therapy, 2nd ed. (Williams and Wilkins, Baltimore, MD, 1992).
18. P. S. Nizin, D. M. Bellezza, and R. B. Mooij, " The elements of tissue-air ratio and systematic error," Med. Phys. 23, 1191-1197 (1996).
19. B. E. Bjärngard and R. L. Siddon, " A note on equivalent circles, squares, and rectangles," Med. Phys. 9, 258-260 (1982).