| 摘要 |
The invention relates to the field of medical device building, in particular to devices for ultrasound echolocation of internal organs and can be used in medical diagnostic systems. The invention ensures reduction of hardware expenses for improvement of dynamics of ultrasound image formation. The device contains receiving-transmitting module, which includes receiving channels of signals from elements of ultrasound sensor. Each receiving channel is electrically connected via individual analogue-digital converter with primary random access memory (RAM) of FIFO type, which in its turn is connected with primary filter-interpolator. Primary RAM of FIFO type is connected with primary unit of shift registers. Outlets of primary filter-interpolator and primary unit of shift registers are connected with respective inlets of two secondary filter-interpolators. Primary unit of shift registers, primary filter-interpolator and secondary filter-interpolators are connected via secondary units of shift registers with respective inlets of beam shapers. Each of beam shaper is connected with respective adder of channels and includes successively connected multiplexor, secondary RAM of FIFO type and multiplier. Each filter-interpolator represents filter-interpolator with fixed symmetric impulse characteristics. In primary filter-interpolator shift registers are combined in one line connected with primary RAM of FIFO type. In secondary filter-interpolator shift registers are combined in two lines, one of which is connected with primary unit of shift registers, and the other one is connected with primary filter-interpolator. |
