35
Participants
Start Date
October 1, 2011
Primary Completion Date
April 1, 2013
Study Completion Date
February 1, 2015
SBRT delivers high dose selective irradiation with millimeter precision to a small volume. The Cyberknife® is a robotic SBRT dedicated device that can deliver 100 to 200 photobeams to the target
Seven to ten days before the scheduled CT, 2-4 fiducial markers were implanted percutaneously 2 to 5 cm next to the lesion under sonographic guidance following administration of local anesthesia, thus allowing real-time tracking during treatment. The total dose delivered was 45 Gy on the 80% isodose, in three fractions over 10 days. Gross tumor volume (GTV) was defined as the tumor mass that could be discerned by diagnostic imaging. An isotropic margin of 5 mm was added to account for the microscopic extension (clinical target volume, CTV) and another 3 mm margin was added to compensate for uncertainties regarding the position (previsional target volume, PTV)
Institut de Cancérologie de Lorraine
OTHER