Characterization of a high-elbow, fluoroscopic electronic portal imaging device for portal dosimetry
The application of a newly developed fluoroscopic (CCD-camera based) electronic portal imaging device (EPID) in portal dosimetry is investigated. A description of the EPID response to dose is presented in terms of stability, linearity and optical cross-talk inside the mechanical structure. The EPID...
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Published in | Physics in medicine & biology Vol. 45; no. 1; pp. 197 - 216 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
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Bristol
IOP Publishing
01.01.2000
Institute of Physics |
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Abstract | The application of a newly developed fluoroscopic (CCD-camera based) electronic portal imaging device (EPID) in portal dosimetry is investigated. A description of the EPID response to dose is presented in terms of stability, linearity and optical cross-talk inside the mechanical structure. The EPID has a relatively large distance (41 cm on-axis) between the fluorescent screen and the mirror (high-elbow), which results in cross-talk with properties quite different from that of the low-elbow fluoroscopic EPIDs that have been studied in the literature. In contrast with low elbow systems, the maximum cross-talk is observed for points of the fluorescent screen that have the largest distance to the mirror, which is explained from the geometry of the system. An algorithm to convert the images of the EPID into portal dose images (PDIs) is presented. The correction applied for cross-talk is a position dependent additive operation on the EPID image pixel values, with a magnitude that depends on a calculated effective field width. Deconvolution with a point spread function, as applied for low-elbow systems, is not required. For a 25 MV beam, EPID PDIs and ionization chamber measurements in the EPID detector plane were obtained behind an anthropomorphic phantom and a homogeneous absorber for various field shapes. The difference in absolute dose between the EPID and ionization chamber measurements, averaged over the four test fields presented in this paper, was 0.1 +/- 0.5% (1 SD) over the entire irradiation field, with no deviation larger than 2%. |
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AbstractList | The application of a newly developed fluoroscopic (CCD-camera based) electronic portal imaging device (EPID) in portal dosimetry is investigated. A description of the EPID response to dose is presented in terms of stability, linearity and optical cross-talk inside the mechanical structure. The EPID has a relatively large distance (41 cm on-axis) between the fluorescent screen and the mirror (high-elbow), which results in cross-talk with properties quite different from that of the low-elbow fluoroscopic EPIDs that have been studied in the literature. In contrast with low elbow systems, the maximum cross-talk is observed for points of the fluorescent screen that have the largest distance to the mirror, which is explained from the geometry of the system. An algorithm to convert the images of the EPID into portal dose images (PDIs) is presented. The correction applied for cross-talk is a position dependent additive operation on the EPID image pixel values, with a magnitude that depends on a calculated effective field width. Deconvolution with a point spread function, as applied for low-elbow systems, is not required. For a 25 MV beam, EPID PDIs and ionization chamber measurements in the EPID detector plane were obtained behind an anthropomorphic phantom and a homogeneous absorber for various field shapes. The difference in absolute dose between the EPID and ionization chamber measurements, averaged over the four test fields presented in this paper, was 0.1 +/- 0.5% (1 SD) over the entire irradiation field, with no deviation larger than 2%. |
Author | Boer, J C J de Heijmen, B J M Pasma, K L Visser, A G |
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Cites_doi | 10.1088/0031-9155/41/11/007 10.1118/1.598293 10.1118/1.598376 10.1016/S0360-3016(98)00341-1 10.1118/1.597190 10.1016/0360-3016(90)90323-C 10.2214/ajr.142.3.603 10.1088/0031-9155/31/9/004 10.1088/0031-9155/40/11/012 10.1118/1.598648 10.1118/1.597810 10.1118/1.597872 10.1118/1.597866 10.1016/0360-3016(94)00388-2 10.1016/S0360-3016(97)00567-1 10.1016/0167-8140(95)01588-8 10.1016/S0167-8140(98)00008-5 10.1016/0360-3016(95)00108-5 10.1016/S0167-8140(98)00122-4 10.1118/1.597836 10.1088/0031-9155/43/8/004 10.1016/S1053-4296(95)80005-0 10.1118/1.597160 10.1118/1.597719 10.1016/0360-3016(90)90265-L |
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Keywords | Performance evaluation CCD camera Radiobiology Characteristic Radioscopy Instrumentation Ionization chamber Dosimetry Radiotherapy Portal imaging Comparative study |
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References | 27 Heijmen B J M (7) 1995; 40 Shalev S (23) 1997 Munro P (14) 1995; 5 Pasma K L (17) 1998; 43 Hansen V N (6) 1996; 23 McNutt T R (13) 1996; 23 Pasma K L (18) 1998 10 Shalev S (22) 1995 Rajapakshe R (20) 1996; 23 Stroom J (24) 1998; 48 15 16 Ying X (29) 1990; 18 19 Wowk B (26) 1993; 20 2 Rimkus D (21) 1984; 142 3 4 5 Wong W J (25) 1990; 18 Yin F F (28) 1994; 21 9 McNutt T R (12) 1996; 23 Althof V G M (1) 1996; 23 Leong J (11) 1986; 31 Kirby M C (8) 1996; 41 |
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SubjectTerms | Algorithms Applied radiobiology (equipment, dosimetry...) Biological and medical sciences Biological effects of radiation Fluoroscopy - instrumentation Fluoroscopy - methods Fundamental and applied biological sciences. Psychology Image Processing, Computer-Assisted Phantoms, Imaging Radiometry Software Tissues, organs and organisms biophysics |
Title | Characterization of a high-elbow, fluoroscopic electronic portal imaging device for portal dosimetry |
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