A dosimeter system based on the Riso B3 dosimeter film, an office scanner for use with PC and the associated software is presented. The scanned image is analyzed either with standard software (Paint Shop Pro 5 or Excel) functions or with the computer code "Scanalizer" that allows presentation of two-dimensional dose maps. Stability and traceability of the dosimeter system is ensured through simultaneous measurement of reference dosimeters. In the dose range from 10 to 70 kGy reproducibility is approximately +/-12% at 1 sigma. (C) 2000 Elsevier Science Ltd. All rights reserved.