| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for determining a pulse repetition frequency for an ultrasound diagnostic system. <P>SOLUTION: The method comprises: receiving a Doppler frequency spectrum signal over time; calculating maximum frequencies f<SB POS="POST">max</SB>from the Doppler frequency spectra; calculating minimum frequencies f<SB POS="POST">min</SB>from the Doppler frequency spectra; tracking the maximum frequencies f<SB POS="POST">max</SB>and minimum frequencies f<SB POS="POST">min</SB>over time; determining whether the maximum frequencies f<SB POS="POST">max</SB>and minimum frequencies f<SB POS="POST">min</SB>are bipolar, or negative or positive unipolar; if bipolar: determining a frequency span based on a difference between the highest maximum frequency high fmax and lowest minimum frequency low fmin; comparing the frequency span to a current PRF setting value; and determining the PRF setting value after the adjustment. <P>COPYRIGHT: (C)2013,JPO&INPIT |
