Providing fast and automated pretreatment beam check without phantom or hybrid planBased on the use of EPID (Electronic Portal Imaging Device), EPIbeam is a web-based software to check external radiotherapy beams in pretreatment conditions.It automatically compares the delivered dose with the planned dose, computed by the TPS. Prior to the patient’s first fraction, it ensures the right dose delivery, correct MLC & machine functioning and integrity of data transfer.It drastically reduces the time spent on beam controls compared to phantom-based methods, making the systematic pretreatment controls now possible!