Cross-sectional imaging techniques such as echocardiography and MRI provide important information about cardiac masses. Echocardiography can provide information about cardiac tumors with regard to size, location and response to treatment. MRI is helpful in determining tumor extent, mobility, location, local invasion, relationship with critical cardiac and non-cardiac structures and tumor characterization. For pericardial tumors and metastatic lesions, MRI appears to be the imaging modality of choice.