Diagnosis of patients with suspected IHD. Colors correspond to the class of recommendations in the ACCF/AHA (Table) [5]. The algorithms do not represent a comprehensive list of recommendations (see full guideline text Ref. [5] for all recommendations and additional Tables and Figures). †See Table 2 of Ref. [5] for short-term risk of death or non-fatal MI in patients with UA/NSTEMI. ‡CCTA is reasonable only for patients with intermediate probability of IHD. CCTA, computed coronary tomography angiography; CMR, cardiac magnetic resonance; ECG, electrocardiogram; Echo, echocardiography; IHD, ischemic heart disease; MI, myocardial infarction; MPI, myocardial perfusion imaging; Pharm, pharmacological; UA, unstable angina; UA/NSTEMI, unstable angina/non-ST-elevation myocardial infarction. (Adapted with permission from Fihn et al. [5].) (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)