Medical ultrasound imaging services; Consulting services in the field of medical imaging regarding the use and operation of medical imaging apparatus including X-ray, computed tomography, magnetic resonance imaging, ultrasound, and positron emission tomography apparatus; Medical imaging services; Dental imaging services; Medical assistance services in the nature of medical information provided to medical professionals from remote locations via the Internet and global computer networks through the use of archived medical images and a data storage and retrieval system; Leasing of medical imaging hardware and software; Providing information, advice and data on medical imaging; Rental of ultrasonic imaging apparatus for medical purposes; Providing information concerning the use of medical diagnostic imaging equipment by means of a web site