The proposed diagnostic algorithm of suspected cardiac amyloidosis in Taiwan. AL, immunoglobulin light chain amyloidosis; ATTR, transthyretin amyloidosis; AV, atrioventricular; CMR, cardiac magnetic resonance; ECG, electrocardiography; ECV, extracellular volume fraction; Gr., grade; H/CL ratio, heart to contralateral lung ratio; HF, heart failure; HTN, hypertension; LGE, late gadolinium enhancement; LGS, longitudinal global strain; LV, left ventricle; LVH, left ventricular hypertrophy; PYP, pyrophosphate; RV, right ventricle. (Adapted and modified from references 25, 41).