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Data from two systems (Delta4 and Portal
Dosimetry) for the same patients
Delta4-phantom EPID
Electronic Portal Imaging Device
• 2 diode matrices 3D-phantom
• PMMA
• TPS algorithm
• 2D-detector
• aSi (amorphous silicone)
• Portal Dosimetry Image Prediction
(PDIP) algorithm
Courtesy A Karlsson Hauer
Dublin 2018