Cancer patient Deborah Charles is seen through the tube of a magnetic resonance imaging scanner as she prepares to enter the MRI machine for an examination at Georgetown University Hospital in Washington May 23, 2007. Like many cancer patients, Charles now spends many of her days going for medical appointments, treatments and examinations. Photo taken May 23, 2007. To match feature WITNESS-CANCER/DIAGNOSIS REUTERS/Jim Bourg (UNITED STATES)