Use of an amorphous silicon EPID for measuring MLC calibration at varying gantry angle

Physics in Medicine and Biology

Volumn 53, Issue 2, 2008, Pages 473-485

  Clarke, M F ^a   Budgell, G J ^a  

^a CHRISTIE HOSPITAL   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

AMORPHOUS SILICON; OPTICAL COLLIMATORS; PATIENT TREATMENT; PIXELS; PORTALS; QUALITY CONTROL;

ELECTRONIC PORTAL IMAGING DEVICES (EPID); GANTRY ANGLES; MULTILEAF COLLIMATORS (MLC); PIXEL SIZE;

IMAGING SYSTEMS;

SILICON;

ACCURACY; ARTICLE; CALIBRATION; COLLIMATOR; DEVICE; ELECTRONIC PORTAL IMAGING DEVICE; ELECTRONICS; GRAVITY; IMAGING SYSTEM; LINEAR ACCELERATOR; MEASUREMENT; MULTILEAF COLLIMATOR; PRIORITY JOURNAL; QUALITY CONTROL; REPRODUCIBILITY; X RAY;

CALIBRATION; EQUIPMENT DESIGN; EQUIPMENT FAILURE ANALYSIS; GREAT BRITAIN; RADIATION DOSAGE; RADIOMETRY; RADIOTHERAPY, CONFORMAL; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY; SILICON;

EID: 38049169060     PISSN: 00319155     EISSN: 13616560     Source Type: Journal    
DOI: 10.1088/0031-9155/53/2/013     Document Type: Article

References (25)

1. Baker S J K, Budgell G J and MacKay R I 2005 Use of an amorphous silicon electronic portal imaging device for multileaf collimator quality control and calibration Phys. Med. Biol. 50 1377-92
2. Budgell G J, Mott J H L, Williams P C and Brown K J 2000 Requirements for leaf position accuracy for dynamic multileaf collimation Phys. Med. Biol. 45 1211-227
3. Cho Y, Moseley D J, Siewerdsen J H and Jaffray D A 2005 Accurate technique for complete geometric calibration of cone-beam computed tomography systems Med. Phys. 32 968-83
4. Convery D J and Rosenbloom M E 1995 Treatment delivery accuracy in intensity-modulated conformal radiotherapy Phys. Med. Biol. 40 979-99
5. Dirkx M L and Heijmen B J 2000 Testing of the stability of intensity modulated beams generated with dynamic multileaf collimation, applied to the MM50 racetrack microtron Med. Phys. 27 2701-7
6. Drever L and Dickof P 2005 Virtual micro MLC commissioning J. Appl. Clin. Med. Phys. 6 1-11
7. James H V, Atherton S, Budgell G J, Kirby M C and Williams P C 2000 Verification of dynamic multileaf collimation using an electronic portal imaging device Phys. Med. Biol. 45 495-509
8. Jordan T J and Williams P C 1994 The design and performance characteristics of a multileaf collimator Phys. Med. Biol. 39 231-51
9. Kirby M C and Williams P C 1993 Measurement possibilities using an electronic portal imaging device Radiother. Oncol. 29 237-43
10. Kirby M C 1995 A multipurpose phantom for use with electronic portal imaging devices Phys. Med. Biol. 40 323-34
11. Mohammadi M and Bezak E 2007 Evaluation of MLC leaf positioning using a scanning liquid ionization chamber EPID Phys. Med. Biol. 52 N21-33
12. Parent L, Seco J, Evans P M, Dance D R and Fielding A 2006 Evaluation of two methods of predicting MLC leaf positions using EPID measurements Med. Phys. 33 3174-82
13. Parsai H, Cho P S, Phillips M H, Giansiracusa R S and Axen D 2003 Random and systematic beam modulator errors in dynamic intensity modulated radiotherapy Phys. Med. Biol. 48 1109-21
14. Partridge M, Evans P M, Mosleh-Shirazi A and Convery D 1998 Independent verification using portal imaging of intensity-modulated beam delivery by the dynamic MLC technique Med. Phys. 25 1872-9
15. Partridge M, Evans P M, van Herk M, Ploeger L S, Budgell G J and James H V 2000 Leaf position verification during dynamic beam delivery: a comparison of three applications using electronic portal imaging Med. Phys. 27 1601-9
16. Samant S S, Zheng W, Parra N A, Chandler J, Gopal A, Wu J, Jain J, Zhu Y and Sontag M 2002 Verification of multileaf collimator leaf positions using an electronic portal imaging device Med. Phys. 29 2900-12
17. Stell A M, Li J G, Zeidan O A and Dempsey J F 2004 An extensive log-file analysis of step-and-shoot intensity modulated radiation therapy segment delivery errors Med. Phys. 31 1593-602
18. Vieira S C, Dirkx M L, Pasma K L and Heijmen B J 2002 Fast and accurate leaf verification for dynamic multileaf collimation using an electronic portal imaging device Med. Phys. 29 2034-40
19. Vieira S C, Bolt R A, Dirkx M L, Visser A G and Heijmen B J 2006 Fast, daily linac verification for segmented IMRT using electronic portal imaging Radiother. Oncol. 80 86-92
20. Wong V Y 2004 Quality assurance devices for dynamic conformal radiotherapy J. Appl. Clin. Med. Phys. 5 8-15
21. Xing L, Lin Z, Donaldson S S, Le Q T, Tate D, Goffinet D R, Wolden S, Ma L and Boyer A L 2000 Dosimetric effects of patient displacement and collimator and gantry angle misalignment on intensity modulated radiation therapy Radiother. Oncol. 56 97-108
22. Yang Y and Xing L 2004 Quantitative measurement of MLC leaf displacements using an electronic portal image device Phys. Med. Biol. 49 1521-33
23. Zygmanski P, Hacker F, Friesen S, Rodenbush R, Lu H M and Chin L 2005 Maximum MLC opening effect in dynamic delivery of IMRT: leaf-positional analysis J Appl. Clin. Med. Phys. 6 33-43 (Epub 2005 May 19)
24. Zygmanski P, Kung J H, Jiang S B and Chin L 2003 Dependence of fluence errors in dynamic IMRT on leaf-positional errors varying with time and leaf number Med. Phys. 30 2736-49
25. Zygmanski P and Kung J H 2001 Method of identifying dynamic multileaf collimator irradiation that is highly sensitive to a systematic MLC calibration error Med. Phys. 28 2220-6