The app can be downloaded for free and is compatible with the iPhone, BlackBerry and Android platforms. The app was adapted from the ACCF/ASNC/ACR/AHA/ASE/SCCT/SCMR/SNM 2009 Appropriate Use Criteria (AUC) for Cardiac Radionuclide Imaging (RNI) published in 2009 in Circulation.

The app guides physicians, step-by-step, through the criteria to evaluate patient history, clinical factors, and other important information to receive an instant appropriate use score for RNI. By entering information, physicians will receive a rating between 1 and 9 that will tell them whether the patient indication is appropriate, inappropriate or uncertain.