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The revised Wackers-Liu CQ® Software is a stand-alone software package for quantification of emission computed tomography (ECT) myocardial perfusion images. The data generated by the Wackers-Liu CQ® Software is intended to be used by the physician in addition to other complementary data in the evaluation of cardiac function and blood supply. It is not meant to replace or eliminate the physician's standard visual interpretation of the patient study or the integration of additional clinical and/or diagnostic information (patient history, stress and/or rest EKG, echocardiogram, etc.) prior to making any final clinical diagnostic or treatment decision. The Wackers-Liu CQ® Software also provides for transmission of ECT images over the internet.

The revised Wackers-Liu CQ® Software is a stand-alone software package. This original product is the automated commercial version of a totally integrated and manually operated cardiac imaging analysis package developed by Drs. Wackers and Liu, and others at the Yale University Cardiovascular Nuclear Imaging Laboratory and described extensively in the peer-reviewed literature. Modifications to the cleared Wackers-Liu CQ® Software consist of changes to the handling of non-circular left ventricular edges and counting voxels. Changes to the Wackers-Liu CQ® Software are transparent to the user.