Development and operation of a pixel segmented liquid-filled linear array for radiotherapy quality assurance

Physics in Medicine and Biology

Volumn 50, Issue 8, 2005, Pages 1703-1716

  Pardo, J ^a   Franco, L ^a   Gomez F ^a   Iglesias, A ^a   Pazos, A ^a   Pena, J ^a   Lobato, R ^b   Mosquera, J ^b   Pombar, M ^b   Sendon J ^b  

^a UNIVERSITY OF SANTIAGO DE COMPOSTELA   (Spain)

^b University Hospital of Santiago de Compostela   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

DATA ACQUISITION; RADIOGRAPHY; RADIOTHERAPY; SIGNAL TO NOISE RATIO; X RAY ANALYSIS;

INTENSITY MODULATED RADIATION THERAPY (IMRT); LINEAR ARRAY; RADIOGRAPHIC FILMS; SPATIAL RESOLUTION;

QUALITY ASSURANCE;

OCTANE; WATER;

ARTICLE; DEVICE; ELECTRIC POTENTIAL; ELECTRONICS; ENERGY; INTENSITY MODULATED RADIATION THERAPY; IONIZATION; IONIZATION CHAMBER; POLARIZATION; PRIORITY JOURNAL; QUALITY CONTROL; RADIATION DOSE; RADIOGRAPHY; RADIOSURGERY; SOLID; X RAY; COMPUTER ASSISTED RADIOTHERAPY; EQUIPMENT; EQUIPMENT DESIGN; EVALUATION; HEALTH CARE QUALITY; INSTRUMENTATION; METHODOLOGY; RADIATION RESPONSE; RADIOMETRY; REPRODUCIBILITY; SENSITIVITY AND SPECIFICITY; SIGNAL PROCESSING; SOLUTION AND SOLUBILITY;

DOSE-RESPONSE RELATIONSHIP, RADIATION; EQUIPMENT DESIGN; EQUIPMENT FAILURE ANALYSIS; QUALITY ASSURANCE, HEALTH CARE; RADIOMETRY; RADIOTHERAPY DOSAGE; RADIOTHERAPY, CONFORMAL; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY; SIGNAL PROCESSING, COMPUTER-ASSISTED; SOLUTIONS;

EID: 22844434471     PISSN: 00319155     EISSN: None     Source Type: Journal    
DOI: 10.1088/0031-9155/50/8/006     Document Type: Article

References (17)

1. Belletti S et al 2001 Pixel segmented ionization chamber for therapeutical beams of photons and hadrons Nucl. Instrum. Methods A 461 420-1
2. Boag J W 1950 Ionization measurements at very high intensities: I. Pulsed radiation beams Br. J. Radiol. 23 601-11
3. Debye P 1942 Reaction rates in ionic solutions Trans. Electrochem. Soc. 82 265-72
4. Eberle K, Engler J, Hartmann G, Hotmann R and Hörandel J R 2003 First tests of a liquid ionization chamber to monitor intensity modulated radiation beams Phys. Med. Biol. 48 3555-64
5. Fowler J F and Attix F H 1966 Solid state integrating dosimeters Radiation Dosimetry vol 2 (New York: Academic) pp 241-90
6. Johansson B, Wickman G and Bahar-Gogani J 1997 General collection efficiency for liquid isooctane and tetramethylsilane in pulsed radiation Phys. Med. Biol. 42 1929-38
7. Jursinic P A and Nelms B E 2003 A 2D diode array and analysis software for verification of intensity modulated radiation therapy delivery Med. Phys. 30 870-9
8. Martens C, De Wagter C and De Neve W 2001 The value of the LA48 linear ion chamber array for characterization of intensity-modulated beams Phys. Med. Biol. 46 1131-48
9. Martens C, Claeys I, De Wagter C and De Neve W 2002 The value of radiographic film for the characterization of intensity-modulated beams Phys. Med. Biol. 47 2221-34
10. Mozumder A 1974 Effect of an external electric field on the yield of free ions: I. General results from the Onsager theory J. Chem. Phys. 60 4300-4
11. Niroomand-Rad A, Blackwell C R, Coursey B M, Gall K P, Galvin J M, McLaughlin W L, Meigooni A S, Nath R, Rodgers J E and Soares C G 1998 Radiochromic film dosimetry: recommendations of AAPM Radiation Therapy Committee Task Group 55 Med. Phys. 25 2093-115
12. Onsager L 1938 Initial recombination of ions Phys. Rev. 54 554-7
13. Pardo J et al 2004 Free ion yield observed in liquid isooctane irradiated by γ rays: comparison with the Onsager theory Phys. Med. Biol. 49 1905-14
14. Sykes J R, James H V and Williams P C 1999 How much does film sensitivity increase at depth for larger field sizes? Med. Phys. 26 329-30
15. van Herk M and Meertens H 1988 A matrix ionization chamber imaging device for on-line patient setup verification during radiotherapy Radiother. Oncol. 11 369-78
16. Wickman G and Nyström H 1992 The use of liquids in ionization chambers for high precision radiotherapy dosimetry Phys. Med. Biol. 37 1789-812
17. Wickman G, Johansson B, Bahar-Gogani J, Holmström T and Grindborg J E 1998 Liquid ionization chambers for absorbed dose measurements in water at low dose rates and intermediate photon energies Med. Phys. 25 900-7