In the last two years OSL dosimetry and EBT film have been introduced into clinical usage. The commercial OSL system from Landauer is much simpler to implement than thermal luminescence dosimetry systems. The performance is sufficient for quantitative MV dosimetry. EBT film has quickly become established in clinics using flatbed document scanners for readout. The true performance of this film requires scanners and densitometers that optimize the light sources to the main peaks at 583 and 639 nm and minimize the artifacts related to interference, scatter and film orientation. Possibly a single scanner will be developed to perform both EBT film dosimetry and optical CT scanning and more 3D radiation sensitive materials will be developed that can be probed at these same wavelengths.
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