A new study has found that computerized mammogram readers are significantly less accurate than human readers. The technique - known as computer-aided detection (or CAD, not to be confused with computer-aided design or computer-assisted dispatch or coronary artery disease) is expensive; according to Bloomberg, a CAD system can cost $675,000. Despite that cost (or perhaps because of it? Medicare covers the procedure - an important consideration for any facility considering an investment), many cancer centers have adopted the technology. It's a big setback for what many investors saw as a hugegrowtharea. Gonna be interesting to watch these stocks (link is to a Yahoo sector snap) react next week.