Prime Minister Ehud Olmert underwent a two-hour magnetic resonance imaging scan at Hadassah Ein Kerem Hospital in Jerusalem on Monday night to see whether there had been any change in his condition since he reported that he had prostate cancer last October. The Prime Minister's Office said that Olmert's doctors would make a decision in the next few days on the next stage of the treatment. Prior to the test, the PMO said that the procedure was coordinated weeks ago in consultations with his doctors and was an "acceptable and routine procedure in monitoring a prostate growth." The prime minister has undergone at least one other test since he was diagnosed, aides said, and the two-hour magnetic imaging test will monitor the tumor. Olmert, 62, announced in October last year that he had received test results revealing an early stage of prostate cancer. The prime minister said then that his doctors told him the growth was "microscopic" and could be removed by a brief surgical procedure. He added that his doctors assured him that he had a full chance of recovery and that the growth discovered was not life-threatening. Herb Keinon and Judy Siegel contributed to this report.