Mindray M5 Exp, Operator'S Manual

Page: 106 / 357

5-26 Image Optimization
Impacts
Note: heart rate value obtained by auto calculation may be of deviation,
please adopt manual measurement or ECG function (optional) to get the
precise value.
Auto Calc Cycle
Description
To set the number of heart cycle for auto calculation.
Operations
Click [Auto Calc Cycle] on the soft menu or the menu to select the cycle
number.
Invert
Description
This function is used to set the display manner of spectrum.
Operation
Turn on or off the function through the [Invert] item in the soft menu or
menu.
Select "Auto Invert" in the "[Setup] -> [System Preset] -> [Image Preset]",
then the color bar can automatically invert when the color flow is steered to
a certain angle to accommodate operator’s habit of distinguishing flow
direction.
Speed
Description
This function is used to set the scanning speed of PW mode imaging.
Operation
Adjust the speed through the [Speed] item in the soft menu or menu.
Effects
Changing the speed makes it easier to identify the cardiac cycles and to
detect more details.
T/F Res
Description
This function is used to adjust for a balance between time resolution and
spatial resolution.
Operation
Adjust through the [T/F Res] item in the soft menu or menu.
WF (Wall Filter)
Description
It filters out low-velocity signals to provide effective information, and this
function is used to adjust the filtered frequency. The real-time value is
displayed in the image parameter area in the upper left corner of the
screen.
Operation
Select through the [WF] item in the soft menu or menu.
Or adjust it in the image parameter area.
Impacts
Flow signals may be missing.
Time Mark
Description
Turn on or off the function to show the time mark in PW mode image, which
facilitates to specify the time information of special points.
Operation
Turn on or off the function through [Time Mark] item in the soft menu or
menu.