aSi-EPID transit signal calibration for dynamic beams: a needful step for the IMRT in vivo dosimetry. - Francesca Greco; Angelo Piermattei; Luigi Azario; Lorenzo Placidi; Savino Cilla; Rocchina Caivano; Vincenzo Fusco; Andrea Fidanzio (Medical Biol. Eng. Comput., 2013)