2017_IGRT course book

Advantages of MV tomography IGRT

 Actual treatment beam used for imaging

 Direct geometric alignment

 Beam has been modeled in TPS and concomitant IGRT dose can “easily” be incorporated into dose calculation.  3D volumetric imaging, no surrogates required.  CT-CT registration, similar information  Registration of dose distribution and anatomy possible  No high-Z artifacts  MV-CT usable for dose calculation and dose reconstruction

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ESTRO IGRT 2008