Chest CT & CR

Total Cases	2200
Normals (1 CR / patient)	400
Patients with Confirmed Nodules (paired CT & CR / patient)	400 patients 800 studies
Patients with Confirmed Nodules & Malignancy (paired CT & CR / patient)	100 patients 200 studies
Patients with Confirmed Nodules & Confounders (paired CT & CR / patient)	400 patients 800 studies
Series	Lung series only <= 3mm
Age	13-89

Mammogram

Total Cases	2200
Confirmed screen-detected cancer positives (w/follow-up MG confirmation < 6 mo's)	1100
Confirmed screening cancer negative (w/follow-up MG confirmation < 24 mo's)	1100
Modality	Full field digital mammography (2D)
Ethnicity	Hispanic - 6% Black - 9% Asian - 14% White (non-Hispanic) - 68% Other - 3%
Vendors	Hologic 30-35%, GE 40-45%, Siemens 20-25%