An isocenter position verification device for electronic portal imaging: Physical and dosimetrical characteristics

F. Claus; Y. De Deene; V. Remouchamps; C. De Wagter; K. Van Vaerenbergh; J. Schauvliege; B. Van Duyse; B. Speleers; W. Duthoy; W. De Neve

doi:10.1016/S1278-3218(01)00137-8

An isocenter position verification device for electronic portal imaging: Physical and dosimetrical characteristics

F. Claus, Y. De Deene, V. Remouchamps, C. De Wagter, K. Van Vaerenbergh, J. Schauvliege, B. Van Duyse, B. Speleers, W. Duthoy, W. De Neve

Research output: Contribution to journal › Article › peer-review

Abstract

The physical and dosimetrical characteristics of a device, designed to visualize the isocenter position on electronic portal images, were examined. The device, to be mounted on the gantry head of the accelerator, containing five spheric lead markers, was designed in order to visualize the isocenter position on portal images. A quality control device was designed to check the reliability of this technique. The disturbance of the dose distribution by the markers was studied with gel dosimetry. The use of markers resulted in a precise and accurate method to visualize the isocenter on portal images. A maximum underdosage of 11%, due to attenuation by the markers, was observed. The use of markers to visualize the isocenter position on portal images, is a fast and reliable method when analyzing patient setup errors with online electronic portal imaging.

Original language	English
Pages (from-to)	759-765
Number of pages	7
Journal	Cancer/Radiotherapie
Volume	5
Issue number	6
DOIs	https://doi.org/10.1016/S1278-3218(01)00137-8
Publication status	Published - 2001
Externally published	Yes

Keywords

Electronic portal imaging
Isocenter
Marker

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10.1016/S1278-3218(01)00137-8

Cite this

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title = "An isocenter position verification device for electronic portal imaging: Physical and dosimetrical characteristics",

abstract = "The physical and dosimetrical characteristics of a device, designed to visualize the isocenter position on electronic portal images, were examined. The device, to be mounted on the gantry head of the accelerator, containing five spheric lead markers, was designed in order to visualize the isocenter position on portal images. A quality control device was designed to check the reliability of this technique. The disturbance of the dose distribution by the markers was studied with gel dosimetry. The use of markers resulted in a precise and accurate method to visualize the isocenter on portal images. A maximum underdosage of 11%, due to attenuation by the markers, was observed. The use of markers to visualize the isocenter position on portal images, is a fast and reliable method when analyzing patient setup errors with online electronic portal imaging.",

keywords = "Electronic portal imaging, Isocenter, Marker",

author = "F. Claus and {De Deene}, Y. and V. Remouchamps and {De Wagter}, C. and {Van Vaerenbergh}, K. and J. Schauvliege and {Van Duyse}, B. and B. Speleers and W. Duthoy and {De Neve}, W.",

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doi = "10.1016/S1278-3218(01)00137-8",

language = "English",

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T2 - Physical and dosimetrical characteristics

AU - Claus, F.

AU - De Deene, Y.

AU - Remouchamps, V.

AU - De Wagter, C.

AU - Van Vaerenbergh, K.

AU - Schauvliege, J.

AU - Van Duyse, B.

AU - Speleers, B.

AU - Duthoy, W.

AU - De Neve, W.

PY - 2001

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N2 - The physical and dosimetrical characteristics of a device, designed to visualize the isocenter position on electronic portal images, were examined. The device, to be mounted on the gantry head of the accelerator, containing five spheric lead markers, was designed in order to visualize the isocenter position on portal images. A quality control device was designed to check the reliability of this technique. The disturbance of the dose distribution by the markers was studied with gel dosimetry. The use of markers resulted in a precise and accurate method to visualize the isocenter on portal images. A maximum underdosage of 11%, due to attenuation by the markers, was observed. The use of markers to visualize the isocenter position on portal images, is a fast and reliable method when analyzing patient setup errors with online electronic portal imaging.

AB - The physical and dosimetrical characteristics of a device, designed to visualize the isocenter position on electronic portal images, were examined. The device, to be mounted on the gantry head of the accelerator, containing five spheric lead markers, was designed in order to visualize the isocenter position on portal images. A quality control device was designed to check the reliability of this technique. The disturbance of the dose distribution by the markers was studied with gel dosimetry. The use of markers resulted in a precise and accurate method to visualize the isocenter on portal images. A maximum underdosage of 11%, due to attenuation by the markers, was observed. The use of markers to visualize the isocenter position on portal images, is a fast and reliable method when analyzing patient setup errors with online electronic portal imaging.

KW - Electronic portal imaging

KW - Isocenter

KW - Marker

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IS - 6

ER -

An isocenter position verification device for electronic portal imaging: Physical and dosimetrical characteristics

Abstract

Keywords

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