An Experimental study of the dose response of polymer gel dosimeters imaged with x-ray computed tomography

J. V. Trapp; S. Å. J. Bäck; M. Lepage; G. Michael; C. Baldock

doi:10.1088/0031-9155/46/11/312

An Experimental study of the dose response of polymer gel dosimeters imaged with x-ray computed tomography

J. V. Trapp, S. Å. J. Bäck, M. Lepage, G. Michael, C. Baldock

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115 Citations (Scopus)

Abstract

Changes in the linear attenuation coefficient of polymer gel dosimeters post-irradiation enable the imaging of dose distributions by x-ray computed tomography (CT). Various compositions of polymer gel dosimeters manufactured from acrylamide (AA), and N,N'-methylene-bis-acrylamide (BIS) comonomers and gelatin or agarose gelling agents were investigated. This work shows that increasing the comonomer concentration increases the CT-dose sensitivity of the polymer gel dosimeter. This can be further increased by replacing gelatin with agarose. Varying the gelatin concentration however does not significantly change the CT-dose sensitivity. Among the compositions studied, dose resolution (DΔ95%) was found to be optimal for polymer gel dosimeters comprising 5% gelatin, 3% AA, 3% BIS and 89% water.

Original language	English
Pages (from-to)	2939-2951
Number of pages	13
Journal	Physics in Medicine and Biology
Volume	46
Issue number	11
DOIs	https://doi.org/10.1088/0031-9155/46/11/312
Publication status	Published - 2001
Externally published	Yes

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title = "An Experimental study of the dose response of polymer gel dosimeters imaged with x-ray computed tomography",

abstract = "Changes in the linear attenuation coefficient of polymer gel dosimeters post-irradiation enable the imaging of dose distributions by x-ray computed tomography (CT). Various compositions of polymer gel dosimeters manufactured from acrylamide (AA), and N,N'-methylene-bis-acrylamide (BIS) comonomers and gelatin or agarose gelling agents were investigated. This work shows that increasing the comonomer concentration increases the CT-dose sensitivity of the polymer gel dosimeter. This can be further increased by replacing gelatin with agarose. Varying the gelatin concentration however does not significantly change the CT-dose sensitivity. Among the compositions studied, dose resolution (DΔ95%) was found to be optimal for polymer gel dosimeters comprising 5% gelatin, 3% AA, 3% BIS and 89% water.",

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AU - Bäck, S. Å. J.

AU - Lepage, M.

AU - Michael, G.

AU - Baldock, C.

PY - 2001

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N2 - Changes in the linear attenuation coefficient of polymer gel dosimeters post-irradiation enable the imaging of dose distributions by x-ray computed tomography (CT). Various compositions of polymer gel dosimeters manufactured from acrylamide (AA), and N,N'-methylene-bis-acrylamide (BIS) comonomers and gelatin or agarose gelling agents were investigated. This work shows that increasing the comonomer concentration increases the CT-dose sensitivity of the polymer gel dosimeter. This can be further increased by replacing gelatin with agarose. Varying the gelatin concentration however does not significantly change the CT-dose sensitivity. Among the compositions studied, dose resolution (DΔ95%) was found to be optimal for polymer gel dosimeters comprising 5% gelatin, 3% AA, 3% BIS and 89% water.

AB - Changes in the linear attenuation coefficient of polymer gel dosimeters post-irradiation enable the imaging of dose distributions by x-ray computed tomography (CT). Various compositions of polymer gel dosimeters manufactured from acrylamide (AA), and N,N'-methylene-bis-acrylamide (BIS) comonomers and gelatin or agarose gelling agents were investigated. This work shows that increasing the comonomer concentration increases the CT-dose sensitivity of the polymer gel dosimeter. This can be further increased by replacing gelatin with agarose. Varying the gelatin concentration however does not significantly change the CT-dose sensitivity. Among the compositions studied, dose resolution (DΔ95%) was found to be optimal for polymer gel dosimeters comprising 5% gelatin, 3% AA, 3% BIS and 89% water.

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SP - 2939

EP - 2951

JO - Physics in Medicine and Biology

JF - Physics in Medicine and Biology

IS - 11

ER -

An Experimental study of the dose response of polymer gel dosimeters imaged with x-ray computed tomography

Abstract

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