1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
An evaluation of ionization chambers for the relative dosimetry of kilovoltage x-ray beams
Rent:
Rent this article for
USD
10.1118/1.3183820
/content/aapm/journal/medphys/36/9/10.1118/1.3183820
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/36/9/10.1118/1.3183820

Figures

Image of FIG. 1.
FIG. 1.

The RDR for a number of ionization chambers measured in air and in Solid Water. All the readings are normalized to the chamber reading for the x-ray beam with energy of 280 kVp. The measurements in the Solid Water were performed at 2 cm depth and subsequently corrected to the surface dose using measured depth dose data.

Image of FIG. 2.
FIG. 2.

Depth doses in water for a 50 kVp x-ray beam (HVL of 1.6 mm Al) with a 6.0 cm diameter applicator and an FSD of 30 cm. All the readings are normalized to a depth of 5.0 mm. The measured data are compared with Monte Carlo calculations using the EGSnrc/BEAMnrc code.

Image of FIG. 3.
FIG. 3.

Depth doses in water for a 75 kVp x-ray beam (HVL of 2.6 mm Al) with a 6.0 cm diameter applicator and an FSD of 30 cm. All the readings are normalized to a depth of 5.0 mm. The measured data are compared with Monte Carlo calculations using the EGSnrc/BEAMnrc code.

Image of FIG. 4.
FIG. 4.

Depth doses in water for a 100 kVp x-ray beam (HVL of 3.9 mm Al) with a 6.0 cm diameter applicator and an FSD of 30 cm. All the readings are normalized to a depth of 5.0 mm. The measured data are compared with Monte Carlo calculations using the EGSnrc/BEAMnrc code.

Image of FIG. 5.
FIG. 5.

Depth doses in water for a 125 kVp x-ray beam (HVL of 6.5 mm Al) with a 6.0 cm diameter applicator and an FSD of 30 cm. All the readings are normalized to a depth of 5.0 mm. The measured data are compared with Monte Carlo calculations using the EGSnrc/BEAMnrc code.

Image of FIG. 6.
FIG. 6.

Depth doses in water for a 180 kVp x-ray beam (HVL of 0.8 mm Cu) with a 6.0 cm diameter applicator and an FSD of 30 cm. All the readings are normalized to a depth of 5.0 mm. The measured data are compared with Monte Carlo calculations using the EGSnrc/BEAMnrc code.

Image of FIG. 7.
FIG. 7.

Depth doses in water for a 280 kVp x-ray beam (HVL of 3.3 mm Al) with a 6.0 cm diameter applicator and an FSD of 30 cm. All the readings are normalized to a depth of 5.0 mm. The measured data are compared with Monte Carlo calculations using the EGSnrc/BEAMnrc code.

Tables

Generic image for table
TABLE I.

The x-ray beams generated by the Pantak DXT300 treatment unit used in this study. Each x-ray beam is listed by filter number, peak potential (kVp), HVL, and inherent filtration.

Generic image for table
TABLE II.

A list of the ionization chambers used in this study including the supplier and a summary of the physical characteristics and geometry.

Generic image for table
TABLE III.

Estimated uncertainties associated with the experimentally measured depth dose data and relative detector response using the ISO methodology.

Loading

Article metrics loading...

/content/aapm/journal/medphys/36/9/10.1118/1.3183820
2009-08-12
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: An evaluation of ionization chambers for the relative dosimetry of kilovoltage x-ray beams
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/36/9/10.1118/1.3183820
10.1118/1.3183820
SEARCH_EXPAND_ITEM