Dosimetry with radiochromic films: a document scanner technique, neutron response, applications

The possibility of reading radiochromic films by the employment of a docume nt scanner and associated software was explored. Dosimetric characteristics , such as the sensitivity of the technique, reproducibility in dose assessm ent, minimum detectable dose, film uniformity, OD variation with time, vari ation of OD due to multiple scans, polarity of the analyzing light, fast ne utron response and thermal neutron yield were investigated. The technique w as used to measure dose distributions in stereotactic radiotherapy, orthovo ltage treatment and neutron capture therapy. (C) 2001 Elsevier Science Ltd. All rights reserved.