SUNNYVALE, Calif., June 14 /PRNewswire/ -- R2 Technology, Inc., the leader in computer aided detection (CAD) technology for the earlier detection of cancer and other medical conditions, today announced the launch of Version 2.1 of its ImageChecker® CT Lung CAD System which features expanded PACS integration and updates to the pulmonary artery PE(TM) tool. This latest software confirms R2’s overall commitment to further increase physicians’ accuracy and workflow efficiency in the detection of disease, including detection of pulmonary artery filling defects, such as pulmonary emboli, during review of multi-slice CT (MSCT) exams.