Eugenio Marinetto is a visiting PhD candidate from the Unidad de Medicina y Cirugia Experimental, Hospital Gregorio Maranon, in Madrid Spain, where his thesis involves the development of novel systems for improved intraoperative radiation therapy. His work at the I-STAR Lab includes the development of new intraoperative ultrasound imaging techniques, integration of ultrasound with surgical navigation systems, and registration of ultrasound and CT or cone-beam CT images.