System Composition, Principle and Specification
2-2
ultrasound. The echo of the ultrasound from human body is received by the same working
elements and converted into feeble echo electrical signals, which will be transmitted to the
Order and Amplification Board through front-end amplification. There is one-probe
connector available on the Probe Interface Board, to which one probe can be connected.
The Digital Processing Board yields transmit excitation signals of the current transmission
according to control signals received and transmits the signals to the Probe Interface
Board. The pre-amplified echo signals from the Probe Interface Board, sent to the Order
and Amplification Board, is ordered, and transmitted to the Digital Processing Board after
two-stage TGC amplification.
The echo signals are converted into digital signals via ADC by the Digital Processing
Board, and further into digital image signals after a series of processing including beam
forming, aperture control, dynamic apodization, dynamic filter, dynamic range conversion,
demodulation, frame correlation processing and scan conversion, and transmitted to the
Ultrasound Control Platform through the Digital Processing Board.
The Digital Processing Board on the one hand transmits digital image signals to the
Control Platform, on the other hand receives control information from the Control Platform
and generates corresponding control data to achieve control of the front end.
The Control Platform is the managerial center of the whole system, which receives
operation command from the Operation Panel, and control the whole system based on the
current state of the system. The other functions that the Control Platform fulfills also
include measurement and calculation, interface display and video processing,
management of patient data and image, as well as control of storage, printing and
communication.
2.2 Specification
2.2.1 Scan mode: Linear, convex array scanning.
2.2.2 Display mode: B, 2B, 4B, M, B/M, ZOOM B;