Shenzhen Mindray Bio-Medical Electronics Co., Ltd. DC-N2, Руководство оператора

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5-10 Image Optimization
5.5 M Mode
5.5.1 M Mode Exam Protocol
1. Select a high-quality image during B mode scanning, and adjust to place the area of
interest in the center of the B mode image.
2. Press <M> on the control panel, and roll the trackball to adjust the sampling line.
3. Press <M> on the control panel again or <Update> to enter M mode, then you can
observe the tissue motion along with anatomical images of B mode.
4. During the scanning process, you can also adjust the sampling line accordingly when
necessary.
5. Adjust the image parameters to obtain optimized images.
6. Perform other operations (e.g. measurement and calculation) if necessary.
5.5.2 M Mode Parameters
„
In M mode scanning, the image parameter area in the upper left corner of the screen
displays the real-time parameter values as follows:
Display F D DR G V
Parameter
Frequency Depth M Dynamic Range M Gain M
speed
„
During M mode imaging, you can switch between B and M menu from the menu title; for
details, please refer to “5.1 Switching Among Imaging Modes” chapter.
„
During M Mode scanning, frequency and acoustic power of the transducer are
synchronous with that of B Mode.
„
Adjustment of the depth or TGC to the B Mode image will lead to corresponding changes
in M Mode image.
5.5.3 M Mode Image Optimization
Gain
Description To adjust the gain of M mode image. The real-time gain value is displayed in
the image parameter area in the upper left corner of the screen.
Operation Rotate the <Gain/ iTouch> knob clockwise to increase the gain, and anti-
clockwise to decrease.
The adjusting range is 0-100.
Effects
Increasing the gain will brighten the image and you can see more received
signals. However, noise may also be increased.
Focus Position
Description
To change the focus position in M mode, symbols as " " of which are
displayed on the right of the image.
Operation Adjust the focus position through the [Focus Position] item on the menu.
Display Format
Description To set the display format of M mode image with B mode image.
Operation Adjust through the [Display Format] item on the menu;
There are 4 formats available for the images display: V1:1, V1:2, V2:1, Full.