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 measureme nt. A description of these detectors, including the most frequently used io nization chamber, aids in the understanding necessary for their use. Proper and accurate use of detectors depends on an understanding of their calibra tion and their characteristics. Detectors such as ionization chamber, inclu ding specialized chambers, and solid detectors, including luminescent detec tors, are described. This is followed by a description of the calibration p rocess. The precision of measurements can be greatly affected by an underst anding of the detector in use. (C) 1998 Elsevier Science Ltd. All rights re served.