Measurements of surface dose using build up curves obtained with an extrapolation chamber

D. J. Manson; D. Velkley; J. A. Purdy; G. D. Oliver

doi:10.1148/115.2.473

Measurements of surface dose using build up curves obtained with an extrapolation chamber

D. J. Manson, D. Velkley, J. A. Purdy, G. D. Oliver

Department of Radiation Oncology

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Abstract

Surface dose was measured in an extrapolation chamber and was found to be less than previously reported. The slope of the build up curve was less steep with the Clinac 4 than with ⁶⁰Co and much steeper with the Clinac 35 at 25 MV than with the betatron at the same energy. The gradient of the depth dose curve in the build up region is probably the best indicator of skin damage.

Original language	English
Pages (from-to)	473-474
Number of pages	2
Journal	Radiology
Volume	115
Issue number	2
DOIs	https://doi.org/10.1148/115.2.473
State	Published - Jan 1 1975

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10.1148/115.2.473

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title = "Measurements of surface dose using build up curves obtained with an extrapolation chamber",

abstract = "Surface dose was measured in an extrapolation chamber and was found to be less than previously reported. The slope of the build up curve was less steep with the Clinac 4 than with 60Co and much steeper with the Clinac 35 at 25 MV than with the betatron at the same energy. The gradient of the depth dose curve in the build up region is probably the best indicator of skin damage.",

author = "Manson, {D. J.} and D. Velkley and Purdy, {J. A.} and Oliver, {G. D.}",

year = "1975",

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AU - Velkley, D.

AU - Purdy, J. A.

AU - Oliver, G. D.

PY - 1975/1/1

Y1 - 1975/1/1

N2 - Surface dose was measured in an extrapolation chamber and was found to be less than previously reported. The slope of the build up curve was less steep with the Clinac 4 than with 60Co and much steeper with the Clinac 35 at 25 MV than with the betatron at the same energy. The gradient of the depth dose curve in the build up region is probably the best indicator of skin damage.

AB - Surface dose was measured in an extrapolation chamber and was found to be less than previously reported. The slope of the build up curve was less steep with the Clinac 4 than with 60Co and much steeper with the Clinac 35 at 25 MV than with the betatron at the same energy. The gradient of the depth dose curve in the build up region is probably the best indicator of skin damage.

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JO - Radiology

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ER -

Measurements of surface dose using build up curves obtained with an extrapolation chamber

Abstract

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