Diagnostic ultrasound: seeing with sound.
D001921:Brain / Q000033:anatomy & histology; D001927:Brain Diseases / Q000175:diagnosis; D001930:Brain Injuries / Q000175:diagnosis; D001932:Brain Neoplasms / Q000175:diagnosis; D004452:Echocardiography; D004453:Echoencephalography; D006801:Humans