Radiotherapy treatment verification using radiological thickness measured with an amorphous silicon electronic portal imaging device: Monte Carlo simulation and experiment

Physics in Medicine and Biology

Volumn 53, Issue 14, 2008, Pages 3903-3919

  Kairn, T ^a   Cassidy, D ^b   Sandford, P M ^a,c   Fielding, A L ^a  

^a QUEENSLAND UNIVERSITY OF TECHNOLOGY   (Australia)

^b ROYAL BRISBANE AND WOMEN'S HOSPITAL   (Australia)

^c PRINCESS ALEXANDRA HOSPITAL   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

CALIBRATION; CUSTOMER SATISFACTION; ELECTROTHERAPEUTICS; HEALTH; LINEAR ACCELERATORS; MONTE CARLO METHODS; NONMETALS; PATIENT TREATMENT; RADIOTHERAPY; SILICON; SYSTEM STABILITY;

CALIBRATION DATA; ELECTRONIC PORTAL IMAGING DEVICE (EPID); EXPERIMENTAL MEASUREMENTS; INSTITUTE OF PHYSICS; ION CHAMBER; MONTE CARLO SIMULATION (MCS); PHYSICAL THICKNESS; RADIOTHERAPY TREATMENT; TARGET LOCATION;

AMORPHOUS SILICON;

SILICON;

ACCURACY; ARTICLE; CALIBRATION; CANCER RADIOTHERAPY; COLLIMATOR; COMPUTER PROGRAM; DEVICE; DOSE CALCULATION; DOSIMETRY; ELECTRONICS; HOSPITAL INFORMATION SYSTEM; HUMAN; IMAGE QUALITY; IMAGING SYSTEM; LINEAR ACCELERATOR; MEASUREMENT; MONTE CARLO METHOD; PHANTOM; PHOTON THERAPY; PRIORITY JOURNAL; RADIATION DOSE; THICKNESS; TREATMENT PLANNING;

CALIBRATION; DIAGNOSTIC IMAGING; ELECTRONICS, MEDICAL; HEAD; MONTE CARLO METHOD; PHANTOMS, IMAGING; RADIOTHERAPY; SENSITIVITY AND SPECIFICITY; SILICON;

EID: 47649110452     PISSN: 00319155     EISSN: 13616560     Source Type: Journal    
DOI: 10.1088/0031-9155/53/14/012     Document Type: Article

References (35)

1. Aljarrah K, Sharp G C, Neicu T and Jiang S B 2006 Determination of the initial beam parameters in Monte Carlo linac simulation Med. Phys. 33 850-8
2. Antonuk L E 2002 Electronic portal imaging devices: a review and historical perspective of contemporary technologies and research Phys. Med. Biol. 47 R31-R65
3. Chen J, Chuang C F, Morin O, Aubin M and Pouliot J 2006 Calibration of an amorphous-silicon flat panel portal imager for exit-beam dosimetry Med. Phys. 33 584-94
4. du Plessis F C P and Willemse C A 2003 Monte Carlo calculation of effective attenuation coefficients for various compensator materials Med. Phys. 30 2537-44
5. Evans P M, Donovan E M, Partridge M, Bidmead A M, Garton A and Mubata C 1999 Radiological thisckness measurement using a lquid ionisation chamber electronic portal imaging device Phys. Med. Biol. 44 N89-N97
6. Evans P M, Hansen V N, Mayles W P M, Swindell W, Torr M and Yarnold J R 1995 Design of compensators for breast radiotherapy using electronic portal imaging Radiother. Oncol. 37 43-54
7. Fielding A L, Evans P M and Clark C H 2002 The use of electronic portal imaging to verify patient position during intensity-modulated radiotherapy delivered by the dynamic MLC technique Int. J. Radiat. Oncol. Biol. Phys. 54 1225-34
8. Fix M K, Keall P J, Dawson K and Siebers J V 2004 Monte Carlo source model for photon beam radiotherapy: photon source characteristics Med. Phys. 31 3106-21
9. Fix M K, Keall P J and Siebers J V 2005 Photon-beam subsource sensitivity to the initial electron-beam parameters Med. Phys. 32 1164-75
10. Kawrakow I, Fippel M and Friedrich K 1996 3D electron dose calculation using a Voxel based Monte Carlo algorithm (VMC) Med. Phys. 23 445-57
11. Kawrakow I and Rogers D W O 2003 The EGSnrc code system: Monte Carlo simulation of electron and photon transport Manual, Ionising Radiation Standards (Ottawa: National Research Council of Canada)
12. Kawrakow I, Rogers D W O and Walters B R B 2004 Large efficiency improvements in BEAMnrc using directional bremsstrahlung splitting Med. Phys. 31 2883-98
13. Kawrakow I and Walters B R B 2006 Efficient photon beam dose calculations using DOSXYZnrc with BEAMnrc Med. Phys. 33 3046-56
14. Keall P J, Siebers J V, Libby B and Mohan R 2003 Determining the incident electron fluence for Monte Carlo-based photon treatment planning using a standard measured data set Med. Phys. 30 574-82
15. Kirkby C and Sloboda R 2005a Comprehensive Monte Carlo calculation of the point spread function for a commercial a-Si EPID Med. Phys. 32 1115-27
16. Kirkby C and Sloboda R 2005b Consequences of the spectral response of an a-Si EPID and implications for dosimetric calibration Med. Phys. 32 2649-58
17. Lovelock D M J, Chui C S and Mohan R 1995 A Monte Carlo model of photon beams used in radiation therapy Med. Phys. 22 1387-94
18. Ma C M, Faddegon B A, Rogers D W O and Mackie T R 1997 Accurate characterization of Monte Carlo calculated electron beams for radiotherapy Med. Phys. 24 401-16
19. McDermott L N, Wendling M, Sonke J, Stroom J, van Asselen B, van Herk M and Mijnheer B 2005 First clinical experience with pre-treatment and in vivo IMRT verification using EPID dosimetry Med. Phys. 32 2090
20. Mohammadi M and Bezak E 2005 The evaluation of minimum detectable phantom thickness change using a scanning liquid filled ion chamber EPID dose response Iran. J. Radiat. Res. 3 3-10
21. Morton E J, Swindell W, Lewis D G and Evans P M 1991 A linear array, scintillation crystal-photodiode detector for megavoltage imaging Med. Phys. 18 681-91
22. Nelson W R, Hirayama H and Rogers D W O 1985 The EGS4 Code System (Stanford, CA: Stanford Linear Accelerator Center)
23. Nijsten S M J J G, Mijnheer B J, Dekker A L A J, Lambin P and Minken A W H 2007 Routine individualised patient dosimetry using electronic portal imaging devices Radiother. Oncol. 83 65-75
24. Nijsten S M J J G, van Elmpt W J C, Jacobs M, Mijnheer B J, Dekker A L A J, Lambin P and Minken A W H 2007 A global calibration model for a-Si EPIDs used for transit dosimetry Med. Phys. 34 3872-84
25. Parent L, Seco J, Evans P M, Dance D R and Fielding A 2006a Evaluation of two methods of predicting MLC leaf positions using EPID measurements Med. Phys. 33 3174-82
26. Parent L, Seco J, Evans P M, Fielding A and Dance D R 2006b Monte Carlo modelling of a-Si EPID response: the effect of spectral variations with field size and position Med. Phys. 33 4527-40
27. Perez M R 1998 Alternative astronomical software packages Astrophys. Space Sci. 258 271-84
28. 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
29. Rogers D W O, Walters B and Kawrakow I 2004 BEAMnrc Users Manual, Ionising Radiation Standards (Ottawa: National Research Council of Canada)
30. Siebers J V, Kim J O, Ko L, Keall P J and Mohan R 2004 Monte Carlo computation of dosimetric amorphous silicon electronic portal images Med. Phys. 31 2135-46
31. Swindell W and Evans P M 1996 Scattered radiation in portal images: A Monte Carlo simulation and a simple physical model Med. Phys. 23 63-73
32. Symonds-Tayler J R N, Partridge M and Evans P M 1997 An electronic portal imaging device for transit dosimetry Phys. Med. Biol. 42 2273-83
33. Tzedakis A, Damilakis J E, Mazonakis M, Stratakis J, Varveris H and Gourtsoyiannis N 2004 Influence of initial electron beam parameters on Monte Carlo calculated absorbed dose distributions for radiotherapy photon beams Med. Phys. 31 907-13
34. Walters B R, Kawrakow I and Rogers D W O 2005 DOSXYZnrc Users Manual, Ionising Radiation Standards (Ottawa: National Research Council of Canada)
35. 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