GE Vivid 7 User Manual

Contrast Imaging
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Mode applied to intensity data calculates and color-codes 
tissue and Angio intensity along a path drawn by the 
operator vs. time.
WARNINGMisdiagnosis based on image artifacts
Misdiagnosis in ultrasound contrast images may be caused by 
several artifacts, most importantly:
Motion artifacts: gives rise to signals independently of contrast 
presence. This may be caused by patient movement; including 
respiration, or by probe movement...

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Data acquisition
Left Ventricular Contrast Imaging
The Left Ventricular (LV) Contrast application has an optimized 
system preset for optimal resolution of endocardial borders and 
for optimal assessment of wall motion and wall thickening.
The LV Contrast application may help to identify LV thrombus 
and evaluate wall motion. 

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LV Contrast over view
 Figure 5-1: The LV Contrast acquisition screen
1. Status window:
2. Soft menu
Controls marked with R 
are also available in 
freeze and cine replay. 

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 Figure 5-2: The LV Contrast controls on the front panel
1. Application
2. Probe
3. Gain R
4. Assignable keys:
• Width
• Frequency
• Focus
• Frame rate
• Up/Down R
• Left/Right R
• Angio
• Cineloop (in Freeze, 
only)
• Review page (in 
Freeze, only)
• B color maps
5. Soft menu
• Power
• Compress R
• Reject R
• Dynamic Range
• Tilt
• Contour
• Diff On/Off
• DDP R
Controls marked with R are 
also available in freeze and 
cine replay
4
5
3
1
2 

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LV Contrast controls
LV Contrast assignables controls
Width
Controls the size and angular width of the image sector. A 
smaller angle generally produces a scan with a higher frame 
rate.
Frequency
Enables the adjustment of the probes operating frequency. A 
higher frequency gives better resolution.
Focus
Changes the location of the focal point. A triangular marker on 
the depth scale along the image sector indicates the position of 
the focal...

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Too high Power lev-
el will destroy the 
contrast agent.Compress
Controls the degree of image contrast.
Reject
Controls the Echo rejection level. When increased, low level 
echoes are rejected and appear darker in the 2D image.
Dynamic Range
Controls the image contrast. A high dynamic range setting 
gives a softer image.
Tilt
Enables the axis of the 2D image to be tilted to the left or to the 
right. By default the axis of the 2D image is...

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Running LV Contrast
The LV Contrast application works only with the M3S, 3S, 5S 
and 6T probes.
To select LV Con-
trast application 
without changing 
the current probe, 
press 
APPL. on the 
control panel.
1. Press PROBE on the control panel.
A list of the connected probes is displayed.
2. Trackball to the desired probe supporting the LV Contrast 
application.
The Application menu for the selected probe is listed.
3. Trackball to LV Contrast...

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Myocardial Contrast Imaging
The main goal of the Myocardial (MC) Contrast application is in 
the assessment of myocardial perfusion.
The MC Contrast application is pre-configured to give access 
to high power settings of the Coded Harmonic Angio technique, 
which combines the strength of harmonic imaging and power 
Doppler. MC Contrast application shall be used in intermittent 
mode.
WARNINGThis application is intended for clinical research...

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MC imaging over view
 Figure 5-3: The MC Contrast acquisition screen
1. Sample volume
2. Status window
3. Soft menu
Controls marked with R 
are also available in 
freeze and cine replay. 

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 Figure 5-4: The MC Contrast controls on the front panel
1. Application
2. Probe
3. Gain R
4. Assignable keys:
• Horizontal sweep
• ECG Trig 1
• ECG Trig 2
• ECG Trig interval
• Simultaneous R
• ECG Trig
• Angio
• Color maps R
• Cineloop (in Freeze)
• Frequency
• Focus
5. Soft menu:
• AF Live:
• Power
• Sample volume
• Frame rate
• Color threshold
• PRF
• Low velocity reject
• Radial average
• Lateral average
• DDP R
• Traces:
• ECG Trig 1
•...