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ESTRO IMRT course 2015
Dose Calculation in Static and Rotational IMRT
Brussels October 8th, 2015
-59-
Dose calculation issues ‚in practice‘:
Hounsfield (CT-) value calibration
•
input for clinical dose
calculation algorithms: local
electron or mass densities
in the
patient
•
these are typically determined
based on the Hounsfield (CT-)
values via calibration curves
…a sometimes (!?) underrated issue!
→
MIND potential errors in
calibration curve, or Hounsfield
stability problems of CT
hardware
Related issue: Dose calculation
based on Cone Beam CTs!