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In all cases the treatment light was delivered from a 690 nm diode laser system through a fiber optic collimator to a 1 cm 2 spot on the tumor tissue, for a total surface irradiance of 200 mW / cm 2.
Placed between the collimator lens and the reduction optics in the e-beam column, the CLA generates a plurality of intermediate images of the electron source.
Imrt also involves dynamic multileaf collimator or ‘step and shoot’ techniques that provide photon fluences that vary according to the radiotherapy dosimetry requirements of the tumour target and anatomical organs at risk.
Using a low energy collimator , images are obtained every 1-2 minutes for 20 minutes.
As with standard scopes, this one is best boresighted with a collimator .
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