Amyloidosis is a serious systemic disease, often unrecognized and under-recognized. Cardiac involvement determines the prognosis in the different forms.Advances in cardiac imaging have allowed the diagnosis of a greater number of patients with cardiac amyloidosis, but in most cases the diagnosis is made late, which explains the often guarded prognosis.Cardiac ultrasound and cardiac magnetic resonance imaging are essential for the diagnosis and risk assessment of patients. They allow, through the study of the global Strain for echocardiography and the study of late enhancement for magnetic resonance imaging, to strongly evoke the diagnosis. Because of the frequent cardiac involvement, cardiologists must be made aware of the need to establish a rapid diagnosis in order to improve the prognosis.