Every 15 minutes, for 10 hours a day, another patient walks into the radiation room at Vanderbilt-Ingram Cancer Center in Nashville. Each picks up a plastic mesh mask, walks to a machine, and lies down on the table underneath.
Nurses fit the mask over the patient's face and shoulders. And then they snap it down.
"It was awful," says Barbara Blades, who was diagnosed with cancer in her lymph nodes and tongue nine years ago. "It was awful to have your head bolted to a table. Not being able to move. Not being able to move your head."