Indications for 18F-FDG PET/CT in Patients with Suspected CS
| Indication | Specifics |
|---|---|
| Histologic diagnosis of extra-CS and abnormal screening tests for CS | ECG: complete left or right BBB or unexplained pathologic Q waves in ≥2 leads |
| Echo: RWMA, LV aneurysm, basal LV septal thinning, or LV systolic dysfunction (LVEF < 50%) | |
| CMR: features consistent with CS | |
| Holter monitoring: sustained or nonsustained VT | |
| Unexplained palpitations or syncope | |
| Younger than 60 y and presenting with unexplained new-onset high-grade AV block (second- or third-degree) | |
| Suspected CS with idiopathic sustained VT, excluding typical outflow tract VT, fascicular VT, or VT secondary to other structural heart disease |
ECG = electrocardiogram; BBB = bundle branch block; echo = echocardiography; RWMA = regional wall motion abnormalities; AV = atrioventricular.