Youkey D8 - M Mode Image Optimization

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4.4.2 M mode image optimization
Gain
Resume
Adjust the gain of M mode ，displays in real time on the image parameter area on the
left side of the screen.
Effect
By increasing the brightness of the gain image, more echo signals can be observed, but
at the same time, there will be more noise.。
Depth
Resume
For adjusting the depth of the image display, the range of image depth can be
adjusted by different probes. The depth value is displayed in the image parameter
area on the left side of the screen in real time.
Effect
The deeper the depth, the wider the observed tissue; the smaller the depth, the
shallower the observed tissue. When the depth increases, the frame rate decreases.
Frequency
Resume
The emission frequency of the probe can be selected by fundamental frequency or
harmonic frequency.
The frequency value is displayed in real time on the image parameter area on the left
side of the screen. There are three frequency modes in the fundamental wave or the
harmonic wave: "penetrating power", "conventional", and "resolution".
Effect
The higher the frequency, the better the near-field resolution, but the penetration
force decreases.
Harmonics can enhance the near-field resolution and reduce the noise with low
frequency and large amplitude.
Scan speed
Resume
Control M mode refresh speed, scan speed value real-time display in the left side of
the screen in the image parameter area.
Effect
More detailed observations can be obtained, such as changing the scanning speed to
detect anomalies in the cycle
Dynamic range
Resume
Adjust the contrast of black-and-white images, compress or expand the gray-scale
display range.
Effect
The larger the dynamic range, the darker the overall image, the smaller the contrast,
and the greater the noise.
Acoustical Power
Resume
Adjust the power of the probe to emit ultrasound.