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Ultrasonic imaging system capable of varying maximum pulse repetition frequency depending upon pulse transmission frequency
Ultrasonic imaging system capable of varying maximum pulse repetition frequency depending upon pulse transmission frequency
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机译:能够根据脉冲传输频率改变最大脉冲重复频率的超声成像系统
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摘要
In an ultrasonic imaging system, a desirable ultrasonic image of an interior portion of a biological body scanned by ultrasonic pulses is obtained without occurrences of residual ultrasonic echoes and idle time. The ultrasonic imaging system includes an ultrasonic probe for transmitting ultrasonic pulses with a specific transmission frequency to a biological body under medical examination and for receiving ultrasonic echoes reflected from an interior portion of the biological body scanned by the ultrasonic pulses to derive an ultrasonic image signal; storage a unit for previously storing at least one PRF (pulse repetition frequency) value fixed only corresponding to the transmission frequency of the ultrasonic pulses transmitted from the ultrasonic probe; and a control unit for reading the PRF value from the storage unit when the specific transmission frequency is set, and for controlling the ultrasonic probe in such a manner that the ultrasonic pulses with the transmission frequency are transmitted and the ultrasonic echoes are received by the ultrasonic probe within a time period determined by the PRF value, thereby producing an ultrasonic image of the scanned interior portion by processing the ultrasonic image signal.
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