The color Doppler jet area and circumference of all jets were also increased.
彩色多普勒示返流及分流束的面积和周长均增加。
The smaller the jet orifice with quicker jet velocity, the larger the color Doppler jet area(P<0.001).
射流口径越小（射流速度越大），射流面积越大（P＜0．001）。
The study indicated that in the clinical application of color Doppler valve regurgitation, color Doppler jet area has a certain semiquantitative value with a small range of jet velocity.
研究提示临床超声诊断瓣膜返流时，在返流速度范围较小的条件下，彩色多普勒返流面积具有一定半定量诊断意义；
The study indicated that in the clinical application of color Doppler valve regurgitation, color Doppler jet area has a certain semiquantitative value with a small range of jet velocity.
研究提示临床超声诊断瓣膜返流时，在返流速度范围较小的条件下，彩色多普勒返流面积具有一定半定量诊断意义；
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