Creating an ultrasound empire.
D002497:Centralized Hospital Services; D006739:Hospital Administration; D006746:Hospital Bed Capacity, 500 and over; D006748:Hospital Departments / Q000458:organization & administration*; D006801:Humans; D015143:Philadelphia; D011872:Radiology Department, Hospital / Q000458:organization & administration*; D014463:Ultrasonography / Q000639:trends