During a recent 10-month period , 136 patients ( 66 men and 70 women ; age range , 21-86 years ; mean SD age , 65.9 11.0 years ) with suspected pancreatic disease were randomized into 3 groups according to the following iodine-load and tube-voltage protocols : 600 mg of iodine per kilogram body weight ( mg/kg ) and 120 kV ( p ) ( 600-120 group ) , 500 mg/kg and 80 kV ( p ) ( 500-80 group ) , and 400 mg/kg and 80 kV ( p ) ( 400-80 group ) .