Quds city, Jan 8, SPA -- Doctors treating Israeli Prime Minister Ariel Sharon decided on Sunday to carry out another brain scan before determining when to begin rousing him from a medically induced coma and assess damage caused by a stroke. Surgeons at Hadassah hospital, where the 77-year-old has been under sedation and on a respirator since Wednesday's stroke, said there is a good chance he will survive though it is unclear how much his faculties have been impaired. The hospital said there had been no change overnight in Sharon's "critical but stable" condition. Reuters quoted a Hospital spokesman as saying that the prime minister's doctors met on Sunday and ordered another computerized brain scan to help them reach a decision on when to attempt to bring him gradually out of sedation.