Dose Course 2018_Flipping book

EPID in vivo dosimetry-commercial solutions

Product Name

How they work

Dosimetry Check

From EP images they calculate the fluence at a plane before the patient.

(Math Resolutions)

This fluence is used instead that calculated by a beam model to calculate the dose to patient (dose engine) The EP image is converted to EP dose (deconvolution by scatter from the portal and patient), This “primary dose” is backprojected into the patient (attenuation) and convolved with a scatter kernel. The EP image is converted to EP dose (deconvolution by scatter from the portal and patient), This “primary dose” is backprojected into the patient (attenuation) and convolved with a scatter kernel. 3D dose reconstruction : Beam model +syntetic MLC logfiles (from EP images)+ CBCT 2D transmission dose comparison : Predicted transmission dose (beam model+ dose calculation algorithm) compared with the transmission dose measured by the EPID.

EpiGrayTM

(DosiSoft) (IBA)

iViewDose

(Elekta)

PerFraction

(Sun Nuclear)