... introduces the image processing technologies such as the changeable frequency, the changeable aperture, dynamic changes of marks, ... 0 (Depth hoist display)Dynamic range: 64~96dB adjustable.Two probe ports, Trans vaginal probe, high frequency linear array ... , frame correlation, dot correlation and linear interpolation, etc.Frequency conversion: 2.5MHz/3.0MHz/3.5MHz/4.0MHzCalculation: distance ...