Exposure Rate from X-ray Equipment (Dose Rate)

The following resource provides the output (dose rate) of various x-ray tubes (and higher energy x-ray generators) at a given potential - presented originally in R/mA at a fixed distance from the target. We have included conversion factors to SI units where appropriate (i.e. mGy/h or Gy/h per mA at 1m). Use with caution! Wherever possible you should use the data that comes with a specific x-ray tube, or even better have the output dose rate measured. Use this resource for historical interest or as a sanity check / comparison for other data you may have. For a different approach to obtaining x-ray tube dose rate data, check out this resource: Calculate an estimate of x-ray dose rate from an x-ray tube given kV and mA. Alternatively, how about trying out our X-ray Tube Dose Rate Calculator.

For formal advice, please visit our Radiation Protection Adviser (RPA) services page. 

  • X-ray equipment: Pulsating potential 5-50 KV: Fig 3.2 (1)

    Published: Sep 29, 2021

    Source: Ionactive Consulting Radiation Protection Resource

      Tags:
    • X-ray tube
    • Dose Rate
    • Output
    • Filtration
    • Calculation
    • mA
    • 5-50kV
    • X-ray equipment
    • Pulsating potential
    • Xray
    • X Ray

    X-ray equipment: Pulsating potential 5-50 KV. A useful graph to calculate the dose rate output of a pulsating potential x-ray tube in mGy/h per mA at a distance of 1 m based on a tungsten target for different levels of tube filtration and kV. The text below the graph explains the conversion process to modern SI units.

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  • X-ray equipment: Constant potential 5-50 KV: Fig 3.2 (2)

    Published: Sep 29, 2021

    Source: Ionactive Consulting Radiation Protection Resource

      Tags:
    • Dose Rate
    • Output
    • Filtration
    • Calculation
    • mA
    • 5-50kV
    • X-ray equipment
    • Constant potential
    • Xray
    • X Ray

    X-ray equipment: Constant potential 5-50 KV. A useful graph to calculate the dose rate output of a constant potential x-ray tube in mGy/h per mA at a distance of 1 m based on a tungsten target for different levels of tube filtration and kV. The text below the graph explains the conversion process to modern SI units.

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  • X-ray equipment: Constant potential 50-200 KV: Fig 3.2 (3)

    Published: Sep 29, 2021

    Source: Ionactive Consulting Radiation Protection Resource

      Tags:
    • X-ray tube
    • Dose Rate
    • Output
    • Filtration
    • Calculation
    • mA
    • 50-200 kV
    • X-ray equipment
    • Constant potential
    • Xray
    • X Ray

    X-ray equipment: Constant potential 50-200 KV. A useful graph to calculate the dose rate output of a constant potential x-ray tube in mGy/h per mA at a distance of 1 m based on a tungsten target for different levels of tube filtration and kV. The text below the graph explains the conversion process to modern SI units.

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  • X-ray equipment: Constant potential 200-500 KV: Fig 3.2 (4)

    Published: Sep 29, 2021

    Source: Ionactive Consulting Radiation Protection Resource

      Tags:
    • X-ray tube
    • Dose Rate
    • Output
    • Filtration
    • Calculation
    • mA
    • 200-500 kV
    • X-ray equipment
    • Constant potential

    X-ray equipment: Constant potential 200-500 KV. A useful graph to calculate the dose rate output of a constant potential x-ray tube in mGy/h per mA at a distance of 1 m based on a tungsten target for different levels of tube filtration and kV. The text below the graph explains the conversion process to modern SI units.

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  • X-ray equipment Constant potential 0.5-3 MV Fig 3.2 (5)

    Published: Sep 29, 2021

    Source: Ionactive Consulting Radiation Protection Resource

      Tags:
    • X-ray tube
    • Dose Rate
    • Output
    • Filtration
    • Calculation
    • mA
    • 0.5 - 3MV
    • X-ray generator
    • Constant potential
    • Xray
    • X Ray

    X-ray equipment: Constant potential 0.5-3 MV. A useful graph to calculate the dose rate output of a constant potential x-ray generator in Gy/h per mA at a distance of 1 m based on a tungsten target for different levels of tube filtration and varying MV. The text below the graph explains the conversion process to modern SI units.

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  • X-ray equipment Constant potential 2-30 MV Fig 3.2 (6)

    Published: Sep 29, 2021

    Source: Ionactive Consulting Radiation Protection Resource

      Tags:
    • X-ray generator
    • Dose Rate
    • Output
    • Filtration
    • Calculation
    • mA
    • 2-30 MV
    • Constant potential
    • Xray
    • X Ray

    X-ray equipment: Constant potential 2-30 MV. A useful graph to calculate the dose rate output of a constant potential x-ray generator in Gy/h per mA at a distance of 1 m based on a tungsten target for one specific filter and varying MV. The text below the graph explains the conversion process to modern SI units.

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