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  2. Ionization chamber - Wikipedia

    en.wikipedia.org/wiki/Ionization_chamber

    The devices used for radiotherapy are called "reference dosimeters", while those used for radiopharmaceuticals are called radioisotope dose calibrators - an inexact name for radionuclide radioactivity calibrators, which are used for measurement of radioactivity but not absorbed dose. [9] A chamber will have a calibration factor established by a ...

  3. Dosimetry - Wikipedia

    en.wikipedia.org/wiki/Dosimetry

    The measure of ‘dose equivalent’ is not organ averaged and now only used for "operational quantities". Equivalent dose is designed for estimation of stochastic risks from radiation exposures. Stochastic effect is defined for radiation dose assessment as the probability of cancer induction and genetic damage. [10]

  4. Noise dosimeter - Wikipedia

    en.wikipedia.org/wiki/Noise_dosimeter

    A noise or sound dose is the amount of sound a person is exposed to in a day. The dose is represented by a percentage. A noise dose of 100% means that a person has exceeded the permissible amount of noise. Any noise exposure after the 100% noise dose may damage hearing. The exchange rate is the rate at which exposure accumulates.

  5. Monitor unit - Wikipedia

    en.wikipedia.org/wiki/Monitor_unit

    A monitor unit (MU) is a measure of machine output from a clinical accelerator for radiation therapy such as a linear accelerator or an orthovoltage unit. Monitor units are measured by monitor chambers, which are ionization chambers that measure the dose delivered by a beam and are built into the treatment head of radiotherapy linear accelerators.

  6. Dosimeter - Wikipedia

    en.wikipedia.org/wiki/Dosimeter

    It is worn by the person being monitored when used as a personal dosimeter, and is a record of the radiation dose received. Modern electronic personal dosimeters can give a continuous readout of cumulative dose and current dose rate, and can warn the wearer with an audible alarm when a specified dose rate or a cumulative dose is exceeded. Other ...

  7. Radiometric calibration - Wikipedia

    en.wikipedia.org/wiki/Radiometric_calibration

    Radiometric calibration is a general term used in science and technology for any set of calibration ... for gamma ray and X-ray dose measurements a unit such as the ...

  8. Calibration curve - Wikipedia

    en.wikipedia.org/wiki/Calibration_curve

    A calibration curve plot showing limit of detection (LOD), limit of quantification (LOQ), dynamic range, and limit of linearity (LOL).. In analytical chemistry, a calibration curve, also known as a standard curve, is a general method for determining the concentration of a substance in an unknown sample by comparing the unknown to a set of standard samples of known concentration. [1]

  9. Sound level meter - Wikipedia

    en.wikipedia.org/wiki/Sound_level_meter

    Calibrated microphones greatly enhances the accuracy and precision of smartphone-based noise measurements. To calibrate the sound level meter apps one must use an acoustical calibrator rather than relying on the pre-defined profiles. This study indicated that the gap between professional instruments and smartphone-based apps are narrowing. [38]