Mindray Imagyn 7, Operator'S Manual

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6 - 26 Operator’s Manual
6 Image Acquisition
Gain
This function is intended to adjust the gain of spectrum map. The real-time gain value is displayed
in the image parameter area.
Increasing the gain will brighten the image and you can see more received signals. However, noise
may also be increased.
PW Sampling Gate
Adjusts the SV position and size of sampling in PW mode, the real-time value of SV and SVD are
displayed in the image parameter area, in which SV represents the size of the sampling gate, and
SVD represents the sampling depth.
•
SV size: Rotate the knob under [SV] on the touch screen to adjust the SV size.
• SVD: Roll the trackball to select the SV depth.
The smaller the SV size becomes, the more accurate the result is; and more information can be
obtained when selecting large SV size.
CW Focus Position
To adjust the focus position of CW mode. The real-time focus position value is displayed on the
image parameter area in SVD.
Roll the trackball to select the focus depth.
Image Quality
Refers to the transmitting frequency in Doppler mode of the probe, the real-time value of which is
displayed in the image parameter area.
Scale
This function is used to adjust the speed range of color flow, which is adjusted through PRF in the
system. The real-time PRF value is displayed in the image parameter area.
Aliasing may occur if low velocity scale is used and high velocities are encountered.
Low velocities may not be identified when a high velocity scale is used.
iTouch
To optimize image parameters as per the current tissue characteristics for a better image effect.
Auto Calculation
This function is used to trace the spectrum and calculate the PW/CW mode image parameters. The
results are displayed in the results window.
In real-time scanning, the results displayed are derived from the calculation of the latest cardiac
cycle.
In the freeze and cine status, the results displayed are calculated from the current selected area.
•
Auto Calc Param: To set the calculation results to display.
• Auto Calc Cycle: To set the heart cycle number for auto-calculation.
• Auto Calc Loop: Freeze the image, turn the knob under [Auto Calc Loop] on the touch screen.
–
Rotate the knob clockwise to select the next loop.
– Rotate the knob anticlockwise to select the last loop.
Angle Angle
Items Meaning