Abstract: An ultrasonic medical diagnostic imaging system is disclosed having an articulated mounting structure for supporting a television image display monitor component. The structure includes a first arm mounted for pivotal movement about a first substantially vertical axis. A second arm is pivotally connected to the first arm for movement about a second movable vertical axis displaced from the first axis. Journaling structure couples the second arm to one axis side of the television monitor for tilting rotation of the monitor about a substantially horizontal axis. Elevator structure defines a vertical travel path of monitor position. Rack apparatus associated with the elevator facilitates locking the monitor at intermediate points along its vertical travel path. Spring bias apparatus applies an upward biasing force to counterbalance the weight of the monitor and the other vertically movable portions of the structure. Damping apparatus frictionally inhibits unattended movement of the monitor.