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ECO 6 Digital Color Doppler Ultrasound System
35
Color Gain
: amplify the overall strength of echoes processed in the CROI
Persistence
: affect temporal smoothing and color Doppler ‘robustness’.
5.5.7
B/BC Mode
In active color mode, press the
[MENU]
to enter into the C Menu and select
[B/BC]
option to turn on the
[B/BC]
item to display a real B mode image at the right side of the screen and active Color mode image at the
left side of the screen.
5.5.8
CPA (PD) Mode
Power Doppler Imaging (PD) is a color flow mapping technique used to map the strength of the Doppler signal
coming from the flow rather than the frequency shift of the signal. Using this technique, the ultrasound system
plots color flow based on the number of reflectors that are moving, regardless of their velocity. PD does not
map velocity, therefore it is not subject to aliasing.
At B Mode status, press parameter key on
[CPA]
to enter into the CPA mode.
5.5.9
DPD Mode
In Power Doppler
(
CPA) mode, press parameter key on
[DPD]
to enter into DPD mode.
If you need to go back to PD (CPA) mode from DPD mode, you could press
[MENU]
key or select the CPA
option and press
[MENU]
again to exit the DPD mode.
5.5.10
CW Mode
Continuous Wave Doppler allows examination of blood flow data all along the Doppler cursor rather than from
any specific depth. Gather samples along the entire Doppler beam for rapid scanning of the heart. Range gated
CW allows information to be gathered at higher velocities.
It works with a phased array probe.
If the velocity of the blood flow is even too high for the PW mode to detect, you have to try CW mode. At B
Mode status press parameter key on
[CW]
to enter CW mode when the probe supports CW mode, then press
[UPDATE]
key to get the spectrum.
5.5.11
TDI Mode
TDI mode is tissue Doppler mode, which is intended to provide information of low-velocity tissue motion,
specifically for cardiac movement. Only phased array probe is available for TDI function. At B Mode status
press parameter key on
[TDI]
to enter into TDI mode when the probe supports TDI mode.
5.5.12
B steer
B Steer is available for linear probes. It can steer the beam to obtain the left or right image and enlarge the area
without to rotate the probes.
In B mode, press menu knob to pop up B Menu, adjust B Steer item to change B steer angle.
5.5.13
Trapezoidal Mode
Trapezoidal image is available for linear probes. In B mode, press menu knob to pop up B Menu, turn
Trapezoidal Mode menu on to enter to Trapezoidal Mode.
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