Abstract
There is considerable evidence that substantial reduction in medical exposures are possible without detriment to patient care. Control of medical exposures should be essential component of quality control (QC) for diagnostic radiology.
Although many investigators reported patient doses measured with various methods, standardized method for patient dose measurement is necessary for QC and QA. The present paper reports reviews and discussions on following subjects necessary to make a protocol for a standardized method in Japan; (1) Purpose of patient dose measurements, (2) Surface dose to be measured for monitoring patient doses, (3) Protocols in UK and USA for example, (4) Three kinds of surface dose, (5) Six dose units used in surface dose, (6) Calibration of dosimeters for diagnostic X-rays, (7) Permissible accuracy of measured patient doses. A protocol should be nationally agreed methods for monitoring patient doses in diagnostic radiology, that should be able to easily carried out by radiological technologists.
