Measurements of output factors with different detector types and Monte Carlo calculations of stopping-power ratios for degraded electron beams

Physics in Medicine and Biology

Volumn 49, Issue 19, 2004, Pages 4493-4506

  Björk, Peter ^a,b   Knöös, Tommy ^b   Nilsson, Per ^b  

^a Dept of Medical Physics/Bioeng ^*  (Sweden)

^b LUND UNIVERSITY HOSPITAL   (Sweden)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON BEAMS; IONIZATION; MEDICAL APPLICATIONS; MONTE CARLO METHODS; PLASTICS; SCATTERING;

DETECTOR TYPES; SILICON DIODES;

TUMORS;

DIAMOND; SILICON; WATER;

AIR; ARTICLE; CONTROLLED STUDY; DIODE; DOSIMETRY; ELECTRON; ELECTRON BEAM; INTERMETHOD COMPARISON; IONIZATION CHAMBER; MONTE CARLO METHOD; PRIORITY JOURNAL; RADIATION BEAM; RADIATION DETECTION; RADIATION DETECTOR; RADIATION DOSE; RADIATION ENERGY; RADIATION FIELD; RADIATION SCATTERING;

EID: 5744252437     PISSN: 00319155     EISSN: None     Source Type: Journal    
DOI: 10.1088/0031-9155/49/19/004     Document Type: Article

References (65)

1. American Association of Physicists in Medicine (AAPM) Task Group 21 1983 A protocol for the determination of absorbed dose from high-energy photon and electron beams Med. Phys. 10 741-71
2. American Association of Physicists in Medicine (AAPM) Task Group 25 1991 Clinical electron-beam dosimetry Med. Phys. 18 73-109
3. American Association of Physicists in Medicine (AAPM) Task Group 39 1994 The calibration and use of plane-parallel ionization chambers for dosimetry of electron beams Med. Phys. 21 1251-60
4. American Association of Physicists in Medicine (AAPM) Task Group 51 1999 AAPM's TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams Med. Phys. 26 1847-70
5. Antolak J A, Bieda M R and Hogstrom K R 2002 Using Monte Carlo methods to commission electron beams: a feasibility study Med. Phys. 29 771-86
6. Bieda M R, Antolak J A and Hogstrom K R 2001 The effect of scattering foil parameters on electron-beam Monte Carlo calculations Med. Phys. 28 2527-34
7. Biggs P J, Epp E R, Ling C C, Novack D H and Michaels H B 1981 Dosimetry, field shaping and other considerations for intra-operative electron therapy Int. J. Radiat. Oncol. Biol. Phys. 7 875-84
8. Björk P 2003 Absorbed dose determination and characteristics of degraded electron beams: application to intraoperative radiation therapy Thesis Lund University, Sweden
9. Björk P, Knöös T, Nilsson P and Larsson K 2000a Design and dosimetry characteristics of a soft-docking system for intraoperative radiation therapy Int. J. Radiat. Oncol. Biol. Phys. 47 527-33
10. Björk P, Knöös T and Nilsson P 2000b Comparative dosimetry of diode and diamond detectors in electron beams for intraoperative radiation therapy Med. Phys. 27 2580-8
11. Björk P, Knöös T and Nilsson P 2002b Influence of initial electron beam characteristics on Monte Carlo calculated absorbed dose distributions for linear accelerator electron beams Phys. Med. Biol. 47 4019-41
12. Björk P, Nilsson P and Knöös T 2002a Dosimetry characteristics of degraded electron beams investigated by Monte Carlo calculations in a setup for intraoperative radiation therapy Phys. Med. Biol. 47 239-56
13. Bruinvis I A D and Mathol W A F 1988 Calculation of electron beam depth-dose curves and output factors for arbitrary field shapes Radiother. Oncol. 11 395-404
14. Bruinvis I A D, Van Amstel A, Elevelt A J and Van der Laarse R 1983 Calculation of electron beam dose distribution for arbitrarily shaped fields Phys. Med. Biol. 28 667-83
15. 50 as a beam quality specifier for selecting stopping-power ratios and reference depths for electron dosimetry Med. Phys. 23 383-8
16. Chen J Z, VanDyk J, Lewis C and Battista J J 2001 A two-source model for electron beams: calculation of relative output factors Med. Phys. 28 1735-45
17. Choi D R, Mobit P N and Breitman K E 2003 The clinical implementation of a method for calculating the output factor and per cent depth dose for an electron beam Phys. Med. Biol. 48 899-908
18. Choi D R, Wolters J, Mason D and Baillie A 2000 Modified sector-integration method for predicting the output factors of electron beams including extended source to surface distance Phys. Med. Biol. 45 3367-72
19. Cygler J, Li X A, Ding G X and Lawrence E 1997 Practical approach to electron beam dosimetry at extended SSD Phys. Med. Biol. 42 1505-14
20. Dahl R A and McCullough E C 1989 Determination of accurate dosimetric parameters for beveled intraoperative electron beam applicators Med. Phys. 16 130-1
21. Das I J, Kase K R, Copeland J F and Fitzgerald T J 1991 Electron beam modifications for the treatment of superficial malignancies Int. J. Radiat. Oncol. Biol. Phys. 21 1627-34
22. Ding G X, Rogers D W O and Mackie T R 1995 Calculation of stopping-power ratios using realistic clinical electron beams Med. Phys. 22 489-501
23. Eveling J N, Morgan A M and Pitchford W G 1999 Commissioning a p-type silicon diode for use in clinical electron beams Med. Phys. 26 100-7
24. Fraass B A, Miller R W, Kinsella T J, Sindelar W F, Harrington F S, Yeakel K, Van de Geijn J and Glatstein E 1985 Intraoperative radiation therapy at the national cancer institute: technical innovations and dosimetry Int. J. Radiat. Oncol. Biol. Phys. 11 1299-311
25. International Atomic Energy Agency (IAEA) 1987 Absorbed dose determination in photon and electron beams: an international code of practice Technical Reports Series No 277 (Vienna: IAEA)
26. International Atomic Energy Agency (IAEA) 1997 The use of plane parallel ionization chambers in high energy electron and photon beams: an international code of practice for dosimetry Technical Reports Series No 381 (Vienna: IAEA)
27. International Atomic Energy Agency (IAEA) 2000 Absorbed dose determination in external beam radiotherapy: an international code of practice for dosimetry based on standards of absorbed dose to water Technical Reports Series No 398 (Vienna: IAEA)
28. Jursinic P A and Mueller R 1997 A sector-integration method for calculating the output factors of irregularly shaped electron fields Med. Phys. 24 1765-9
29. Kapur A and Ma C-M 1999 Stopping-power ratios for clinical electron beams from a scatter-foil linear accelerator Phys. Med. Biol. 44 2321-41
30. Kapur A, Ma C-M, Mok E C, Findley D O and Boyer A 1998 Monte Carlo calculations of electron beam output factors for a medical linear accelerator Phys. Med. Biol. 43 3479-94
31. Kawrakow I 2000 Accurate condensed history Monte Carlo simulation of electron transport: I. EGSnrc, the new EGS4 version Med. Phys. 27 485-98
32. Kawrakow I and Rogers D W O 2001 The EGSnrc code system: Monte Carlo simulation of electron and photon transport National Research Council of Canada Report PIRS-701 (Ottawa: NRC)
33. Khan F M, Higgins P D, Gerbi B J, Deibel F C, Sethi A and Mihailidis D N 1998 Calculation of depth dose and dose per monitor unit for irregularly shaped electron fields Phys. Med. Biol. 43 2741-54
34. Kharrati H, Aletti P and Bruinvis I A D 1998 A semi-empirical method for calculating the effect of air gap space on output factors on electron beam dose distributions Radiother. Oncol. 47 81-4
35. Kosunen A and Rogers D W O 1993 Beam quality specification for photon beam dosimetry Med. Phys. 20 1181-8
36. Kurup R G, Glasgow G P and Leybovich L 1995 Output factors for irregularly shaped electron fields Med. Dosim. 20 155-9
37. McCullough E C and Anderson J A 1982 The dosimetric properties of an applicator system for intraoperative electron-beam therapy utilizing a Clinac-18 accelerator Med. Phys. 9 261-8
38. McParland B J 1987 A parameterization of the electron beam output factors of a 25-MeV linear accelerator Med. Phys. 14 665-9
39. McParland B J 1989 A method of calculating the output factors of arbitrarily shaped electron fields Med. Phys. 16 88-93
40. Meyer J A, Palta J R and Hogstrom K R 1984 Demonstration of relatively new electron dosimetry measurement techniques on the Mevatron 80 Med. Phys. 11 670-7
41. Mills M D, Fajardo L C, Wilson D L, Daves J L and Spanos W J 2001 Commissioning of a mobile electron accelerator for intraoperative radiotherapy J. Appl. Clin. Med. Phys. 2 121-30
42. Mills M D, Hogstrom K R and Almond P R 1982 Prediction of electron beam output factors Med. Phys. 9 60-8
43. Mills M D, Hogstrom K R and Fields R S 1985 Determination of electron beam output factors for a 20-MeV linear accelerator Med. Phys. 12 473-6
44. Mobit P N and Sandison G A 1999 An EGS4 Monte Carlo examination of the response of a PTW-diamond radiation detector in megavoltage electron beams Med. Phys. 26 839-44
45. Nelson W R, Hirayama H and Rogers D W O 1985 The EGS4 code system SLAC Report SLAC-265 (Stanford, CA: Stanford Linear Accelerator Center)
46. Nelson C E, Cook R and Rakfal S 1989 The dosimetric properties of an intraoperative radiation therapy applicator system for a Mevatron-80 Med. Phys. 16 794-9
47. Niroomand-Rad A 1989 Film dosimetry of small elongated electron beams for treatment planning Med. Phys. 16 655-62
48. Niroomand-Rad A, Gillin M T, Kline R W and Grimm D F 1986 Film dosimetry of small electron beams for routine radiotherapy planning Med. Phys. 13 416-21
49. Nyerick C E, Ochran T G, Boyer A L and Hogstrom K R 1991 Dosimetry characteristics of metallic cones for intraoperative radiotherapy Int. J. Radiat. Oncol. Biol. Phys. 21 501-10
50. O'Brien P, Michaels H B, Aldrich J E and Andrew J W 1985 Characteristics of electron beams from a new 25-MeV linear accelerator Med. Phys. 12 799-805
51. Olsen D R, Paulsen T H, Heyerdal H, Tveit K M, Wiig J N, Giercksky K E and Storaas A 1995 Field homogeneity of bevelled intraoperative electron beam cones: the influence of virtual focus surface distance Med. Dosim. 20 105-9
52. Palta J R, Daftari I K, Ayyangar K M and Suntharalingam N 1990 Electron beam characteristics on a Philips SL25 Med. Phys. 17 27-34
53. Rashid H, Islam M K, Gaballa H, Rosenow U F and Ting J Y 1990 Small-field electron dosimetry for the Philips SL25 linear accelerator Med. Phys. 17 710-4
54. Rogers D W O, Faddegon B A, Ding G X, Ma C-M, We J and Mackie T R 1995 BEAM: a Monte Carlo code to simulate radiotherapy treatment units Med. Phys. 22 503-24
55. Rogers D W O, Kawrakow I, Seuntjens J P and Walters B R B 2002 NRC user codes for EGSnrc National Research Council of Canada Report PIRS-702 (Ottawa: NRC)
56. Rogers D W O, Ma C-M, Walters B R B, Ding G X, Sheikh-Bagheri D and Zhang G 2001 BEAMnrc user manual National Research Council of Canada Report PIRS-0509a (Ottawa: NRC)
57. Rustgi S N and Working K R 1992 Dosimetry of small field electron beams Med. Dosim. 17 107-10
58. Sharma S C, Modur P and Basavatia R 1988 Evaluation of a photon and an electron beam of a 6-MV linear accelerator Med. Phys. 15 525-9
59. Sharma S C, Wilson D L and Jose B 1984 Dosimetry of small fields for Therac 20 electron beams Med. Phys. 11 697-702
60. Shiu A S, Tung S S, Nyerick C E, Ochran T G, Otte V A, Boyer A L and Hogstrom K R 1994 Comprehensive analysis of electron beam central axis dose for a radiotherapy linear accelerator Med. Phys. 21 559-66
61. Verhaegen F, Mubata C, Pettingell J, Bidmead A M, Rosenberg I, Mockridge D and Nahum A E 2001 Monte Carlo calculation of output factors for circular, rectangular, and square fields of electron accelerators (6-20 MeV) Med. Phys. 28 938-49
62. Walters B R B and Rogers D W O 2002 DOSXYZnrc user manual National Research Council of Canada Report PIRS-794 (Ottawa: NRC)
63. Wolkov H B, Chenery S G, Asche D R, McPeek E C, Hanks G E and Holmes T W 1988 Practical and technical considerations in establishing an intraoperative radiation therapy program in the community practice Radiology 168 255-8
64. Zhang G G, Rogers D W O, Cygler J E and Mackie T R 1998 Effects of changes in stopping-power ratios with field size on electron beam relative output factors Med. Phys. 25 1711-6
65. Zhang G G, Rogers D W O, Cygler J E and Mackie T R 1999 Monte Carlo investigation of electron beam output factors versus size of square cutout Med. Phys. 26 743-50