Inclusion Criteria:  Age 18 years and above. Patients able to understand, read and sign the informed consent Patient willing to answer a short questionnaire  Exclusion Criteria:  Pregnancy(females of childbearing potential will be tested with a urine pregnancy test prior to their inclusion in the study) Not willing or not able to sign an inform consent Physical limitation to maneuvering the probe on the body Unable to lie flat for study Patients experiencing a known or suspected acute cardiac event Patients with severe chest wall abnormalities Patients who have undergone pneumonectomy Patients whose anatomy does not lend itself to echocardiography