Characteristics of radiation detectors for diagnostic radiology.

The use of X-rays for diagnosis has been significant since its discovery. A measurement of the X-ray dose is the main determinant for risk vs benefit of these examinations. Radiation detectors are important for dose measurement. A description of these detectors, including the most frequently used ionization chamber, aids in the understanding necessary for their use. Proper and accurate use of detectors depends on an understanding of their calibration and their characteristics. Detectors such as ionization chamber, including specialized chambers, and solid detectors, including luminescent detectors, are described. This is followed by a description of the calibration process. The precision of measurements can be greatly affected by an understanding of the detector in use.