A Monte Carlo method to evaluate the impact of positioning errors on detector response and quality correction factors in nonstandard beams

Physics in Medicine and Biology

Volumn 56, Issue 8, 2011, Pages 2617-2634

  Bouchard, Hugo ^a,b   Seuntjens, Jan ^c   Kawrakow, Iwan ^d  

^a UNIVERSITÉ DE MONTRÉAL   (Canada)

^b CENTRE HOSPITALIER DE L UNIVERSITÉ DE MONTRÉAL   (Canada)

^c MONTREAL GENERAL HOSPITAL   (Canada)

^d NATIONAL RESEARCH COUNCIL CANADA   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

CORRECTION FACTORS; DETECTOR RESPONSE; DOSE GRADIENTS; EXPERIMENTAL PROCEDURE; MATHEMATICAL FORMALISM; NEW PROTOCOL; OUTPUT FACTOR MEASUREMENTS; POSITIONING ERROR; RADIATION DOSIMETRY; REALISTIC MODEL; REFERENCE DOSIMETRY; SIMULATION RESULT; SOURCES OF UNCERTAINTY; UNBIASED ESTIMATES; UNCERTAINTY BUDGET;

DETECTORS; DOSIMETRY; ERRORS; MONTE CARLO METHODS; PHYSICAL THERAPY; PROBABILITY DISTRIBUTIONS;

UNCERTAINTY ANALYSIS;

ARTICLE; COMPUTER SIMULATION; EVALUATION; HUMAN; INSTRUMENTATION; INTENSITY MODULATED RADIATION THERAPY; MATHEMATICS; MEDICAL ERROR; METHODOLOGY; MONTE CARLO METHOD; PATIENT POSITIONING; QUALITY CONTROL; RADIOMETRY; UNCERTAINTY;

COMPUTER SIMULATION; HUMANS; MATHEMATICS; MEDICAL ERRORS; MONTE CARLO METHOD; PATIENT POSITIONING; QUALITY CONTROL; RADIOMETRY; RADIOTHERAPY, INTENSITY-MODULATED; UNCERTAINTY;

EID: 79953689907     PISSN: 00319155     EISSN: 13616560     Source Type: Journal    
DOI: 10.1088/0031-9155/56/8/018     Document Type: Article

References (19)

1. Almond P R, Biggs P J, Coursey B M, Hanson W F, Huq M S, Nath R and Rogers D W O 1999 AAPM's TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams Med. Phys. 26 1847-69
2. Alfonso R et al 2008 A new formalism for reference dosimetry of small and nonstandard fields Med. Phys. 35 5179-86
3. Andreo P, Burns D T, Hohfield K, Huq M S, Kanai T, Smyth F, Laitano V and Vynckier S 2001 Absorbed dose determination in external beam radiotherapy: an International Code of Practice for dosimetry based on standards of absorbed dose to water Technical Report TRS-398 (Vienna: International Atomic Energy Agency)
4. Bouchard H, Seuntjens J P, Carrier J and Kawrakow I 2009 Ionization chamber gradient effects in nonstandard beams. Med. Phys. 36 4654-63
5. Chang-Ming M and Nahum A E 1993 Calculation of absorbed dose ratios using correlated Monte Carlo sampling Med. Phys. 20 1189-99 (Pubitemid 23249867)
6. Castro P, García-Vicente F, Mínguez C, Floriano A, Sevillano D, Pérez L and Torres J J 2008 Study of the uncertainty in the determination of the absorbed dose to water during external beam radiotherapy calibration J. Appl. Clinical Med. Phys. 9 70-86
7. Chung E, Bouchard H and Seuntjens J 2010 Investigation of three radiation detectors for accurate measurement of absorbed dose in nonstandard fields Med. Phys. 37 2404-13
8. Ghosh M 1996 On the nonexistence of nonnegative unbiased estimators of variance components Indian J. Stat., Ser. B 58 360-2
9. ISO 1995 Guide to expression of uncertainty in measurement Technical Report Guide 98 (Geneva: International Organization on Standardization)
10. Jeraj R, Mackie T R, John B and Gustavo O 2005 Dose calibration of nonconventional treatment systems applied to helical tomotherapy Med. Phys. 32 570-7 (Pubitemid 40322339)
11. Kawrakow I 2000 Accurate condensed history Monte Carlo simulation of electron transport: I. EGSnrc, the new EGS4 version Med. Phys. 27 485-98 (Pubitemid 30171797)
12. Kawrakow I 2005 egspp: the EGSnrc C++ class library Technical Report PIRS-899 (Ottawa: National Research Council of Canada)
13. Kawrakow I, Mainegra-Hing E, Rogers D W O, Tessier F and Walters B R B 2009 The EGSnrc code System: Monte Carlo simulation of electron and photon transport Technical Report PIRS-701 (Ottawa: National Research Council of Canada)
14. Meyer J L 2007 Advances in the Treatment Planning and Delivery of Radiotherapy, Frontiers of Radiation Therapy and Oncology vol 40 (Basel: Karger)
15. Press William H, Teukolsky Saul A, Vetterling William T and Flannery Brian P 2002 Numerical Recipes in C++: The Art of Scientific Computing 2nd edn (Cambridge: Cambridge University Press)
16. Rice J A 1999 Mathematical Statistics and Data Analysis 2nd edn (Belmont, CA: Duxbury Press)
17. Rogers D W O, Walters B and Kawrakow I 2006 BEAMnrc users manual Technical Report PIRS-509 (Ottawa: National Research Council of Canada)
18. Walters B R B, Kawrakow I and Rogers D W O 2002 History by history statistical estimators in the beam code system Med. Phys. 29 2745-52 (Pubitemid 36008467)
19. Wulff J, Zink K and Kawrakow I 2008 Efficiency improvements for ion chamber calculations in high energy photon beams. Med. Phys. 35 1328-36 (Pubitemid 351457500)