Shielding for neutron scattered dose to the fetus in patients treated with 18 MV x-ray beams

Medical Physics

Volumn 27, Issue 8, 2000, Pages 1800-1803

  Roy, S C ^a,b   Sandison, G A ^a  

^a UNIVERSITY OF CALGARY   (Canada)

^b BOSE INSTITUTE   (India)

Author keywords

[No Author keywords available]

Indexed keywords

ALIPHATIC COMPOUNDS; LEAD COMPOUNDS; NEUTRON SCATTERING; NEUTRONS; PATIENT MONITORING; PATIENT TREATMENT; PHOTOIONIZATION; PHOTONS; POLYETHYLENES; SHIELDING; X RAYS;

HIGH ENERGY X RAY; NEUTRON DOSE; PREGNANT WOMAN; SCATTERED NEUTRON; SCATTERED PHOTONS; SUPERHEATED DROP DETECTORS; X RAY BEAM;

X RAY DETECTORS;

LEAD; POLYETHYLENE;

ARTICLE; DOSIMETRY; FETUS; IONIZATION CHAMBER; NEUTRON SCATTERING; PREGNANCY; PRIORITY JOURNAL; RADIATION BEAM; RADIATION DOSE DISTRIBUTION; RADIATION SHIELD; TECHNIQUE; TREATMENT PLANNING; X RAY;

EID: 0033860637     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.1287438     Document Type: Article

References (21)

1. F. d'Errico, R. Nath, G. Silvano, and T. Luigi, "In vivo neutron dosimetry during high energy bremsstrahlung radiotherapy, " Int. J. Radiat. Oncol., Biol., Phys. 41, 1185-1192 (1998).
2. NCRP report 91, "Recommendations on limits for exposure to ionizing radiation," National Council on Radiation Protection and Measurements, Bethesda, MD 20814, 1987.
3. ICRP report 60, 1990 Recommendations of the International Commission on Radiological Protection (Permagon, Oxford, 1991).
4. ICRP report 44, Protection of the Patient in Radiation Therapy (Pergamon, Oxford, 1985).
5. BEIR report "The effects on populations of exposure to low levels of ionizing radiation," National Academy of Sciences-National Research Council, Washington, DC (1972).
6. ICRP report 49, Developmental Effects of Irradiation on the Brain of the Embryo and Fetus (Permagon, Oxford, 1986).
7. E. J. Hall, Radiobiology for the Radiologist, 3rd ed. (J. B. Lippincott, New York, 1998).
8. E. Hammer-Jacobsen, "Therapeutic abortion on account of x-ray examination during pregnancy," Dan. Med. Bull. 6, 113-121 (1959).
9. Atomic Energy Control Board of Canada Report, "Dose limits for pregnant workers-rationale for the limits in the radiation protection regulations," Catalogue No. INFO-0700 (E) (1999).
10. ICRP report 26, Recommendations of the International Commission on Radiological Protection (Pergamon, Oxford, 1977).
11. H. Ing, W. R. Nelson, and R. A. Shore, "Unwanted photon and neutron radiation resulting from collimated photon beams interacting with the body of radiotherapy patients," Med. Phys. 9, 27-33 (1982).
12. R. Nath, A. S. Meigooni, C. R. King, S. Smolen, and F. d'Errico, "Superheated drop detector for determination of neutron dose equivalent to patients undergoing high energy x-ray and electron radiotherapy," Med. Phys. 20, 781-787 (1993).
13. F. d'Errico, R. Nath, L. Tana, G. Curzio, and W. G. Alberts, "Inphantom dosimetry and spectrometry of photoneutrons from an 18 MV linear accelerator," Med. Phys. 25, 1717-1724 (1998).
14. M. Stovall, C. R. Blackwell, J. Cundiff, D. H. Novack, J. R. Palta, L. K. Wagner, E. W. Webster, and R. J. Shalek, "Fetal dose from radiotherapy with photon beams: Report of AAPM Radiation Therapy Committee Task Group No. 36," Med. Phys. 22, 63-82 (1995).
15. J. A. Antolak and E. A. Strom, "Fetal dose estimates for electron-beam treatment to the chest wall of a pregnant woman," Med. Phys. 25, 2388-2391 (1998).
16. R. E. Apfel and S. C. Roy, "Superheated drop detector: A possible alternative for neutron dosimetry," Radiat. Prot. Dosim. 10, 327-330 (1985).
17. F. d'Errico and W. G. Alberts, "Superheated-drop (bubble) neutron detectors and their compliance with ICRP-60," Radiat. Prot. Dosim. 54, 357-360 (1994).
18. R. Nath, E. R. Epp, J. S. Laughlin, W. P. Swanson, and V. P. Bond, "Neutrons from high-energy x-ray medical accelerators: An estimate of risk to the radiotherapy patient," Med. Phys. 11, 231-241 (1984).
19. T. Loye, N. P. S. Sidhu, and G. A. Sandison, "Comparison of superheated drop detector with phosphorous pentoxide powder for the detection of neutrons in 18 MV x-rays," Med. Phys. 26,. 845-847 (1999).
20. J. C. Liu, K. R. Kase, X. S. Mao. W. R. Nelson, J. H. Kleck, and S. Johnson, "Calculations of photoneutrons from Varian Clinac accelerators and their transmissions in materials," Stanford Linear Accelerator Center, Stanford, CA, SLAC-PUB-7404, 1997.
21. M. Mazonakis, J. Damilakis, N. Theoharopoulos, H. Varveris, and N. Gourtsoyiannis, "Brain radiotherapy during pregnancy: An analysis of conceptus dose using anthropomorphic phantoms," Br. J. Radiol. 72, 274-278 (1999).