EPIDose™* is a completely independent method of converting MV EPID images to dose for analysis in the MapCHECK software. EPIDose compares your EPID output to planned dose, not predicted images as other systems do, and therefore EPIDose performs QA of the TPS system as well as the delivery. Keep your IMRT QA independent and absolute dose based with EPIDose, the missing link for EPID based IMRT QA.
*patent pending
How EPIDose Works
EPIDose introduces an EPID-to-Dose conversion that allows your IMRT QA to remain dose-based, resulting in accurate conversions of EPID images to "Dose Planes". EPIDose operating in the MapCHECK analysis environment, offers complete independence from the delivery and planning systems along with a suite of familiar and proven analysis options.
Physics Modeling is quickly performed for each linac and energy combination. After EPIDose physics modeling is initially done, it is not required again unless there is a change in the EPID.
EPID Based QA with EPIDose
- Using a raw EPID file, the EPID image is projected to the desired dose plane location. Corrections for output factors and the source distribution of scattered photons are applied to each MLC sub-field.
- The results are convolved with a dose redistribution kernel which converts the dose from EPID response (sharper than water) to a water equivalent scattering of dose.
- The results are then automatically calibrated to dose using data in the EPIDose model (based on MapCHECK absolute dose planes).
Physics Modeling
Product Options
