Comparison of Two Commercial CAD Systems for Digital Mammography

I n late 2006, an outpatient imaging center began its conversion to digital mammography (DM). Part of this transition was a plan to purchase software for computer-aided detection (CAD) to assist in analysis of the digital mammography images. The preparation to purchase one of two systems included a comparison of several specifications, including DICOM compatibility and the ability of the systems to fit well into the digital mammography program of the imaging center. A small study was designed to determine whether one of the two different commercially available systems being considered [R2 ImageChecker (version 8.3.17) and iCAD Second Look (version 7.2-H)] was superior to the other for assisting in interpretation of digital mammography images from screening mammograms obtained with the newly installed General Electric Senographe DS unit. Patient images included in this study were given retrospective approval from the Institutional Review Board with waiver of informed consent for publication of the study results.