With the future of radiation therapy trending towards increasingly complex treatmentplans, including 4D treatments, hypofractionation and adaptive radiotherapy, the needfor instantaneous plan approval and maximum accuracy during all stages of QA isgreater than ever before.To us, a solution includes both accuracy in determining the dose delivered to thepatient but also efficiency and ease of use with minimal changes to the normalworkflow at the clinic. It also includes the tools required for a physicist to find thecause of errors and discrepancies when they occur.Our solution is the Delta4 Discover, a transmission detector that measures thetransmission dose in the cleverest way, including minimal attenuation and minimalincrease in skin dose to the patient without reducing treatment clearance.With Express Measure – a feature of Delta4 Discover – the high-speedmeasurement system monitors all critical treatment parameters with no interactionor preparation required.The Delta4 Discover has enabled the development of the Delta4 Synthesiswhich ensures delivered dose verification in the patient anatomy at-treatment bycombining the 4D reference data of the Delta4 Phantom+ and Delta4 Discover.By easily adapting to changing clinic environments and advanced therapies, theDelta4 Discover delivers a complete solution