GE Vivid 7 User Manual

							Scanning Modes
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Using 2D
Refer to page 400 
about creating pre-
sets.The 2D-Mode is the systems default mode.
1. Press 
2D on the control panel to access 2D mode.
Check the Displays 
brightness and con-
trast setting before 
adjusting the unit 
imaging controls2. Optimize the image by adjusting the image controls 
described in the previous section.
If necessary use preset for optimum performance with 
minimum adjustment.
Optimizing 2D
The following controls can be adjusted to optimize the 2D Mode 
display:
• Use the Gain and TGC controls to optimize the overall 
image.
• Use the Depth control to adjust the range to be imaged.
• Use the Focus control to center the focal point(s) around 
the region of interest.
• Use the Frequency (move to higher frequencies) or the 
Frame rate control (move to lower frame rate) to increase 
resolution in image
• Use the Frequency (move to lower frequency) to increase 
penetration.
• Use the Reject control to reduce noise in the image.
• Use the DDP control to optimize imaging in the blood flow 
regions and make a cleaner, less noisy image.
WARNINGAlways use the minimum power required to obtain acceptable 
images in accordance with applicable guidelines and policies. 
						

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M-Mode
M-Mode over view
 Figure 3-3: The cardiac M-Mode screen (top/bottom)
1. Time motion cursor 
conventional M-
Mode
2. Time motion cursor 
curved anatomical 
M-Mode
3. Time motion cursor 
anatomical M-Mode
4. Depth scale
5. Focus marker
6. Time scale
7. Status window:
8. Soft menu 
						

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 Figure 3-4: The M-Mode controls on the front panel
This unit has three types of M-Mode: 
•  Conventional M-Mode (MM): displays a distance/time plot 
of a cursor line in the axial plane of the 2D-image.
•  Anatomical M-Mode (AMM): displays a distance/time plot 
from a cursor line, which is independent from the axial 
plane. AMM is available in greyscale, color, TVI, Tissue 
Tracking, Strain rate and Strain modes.
•  Curved Anatomical M-Mode (CAMM): displays a distance/
time plot from a free-drawn cursor line. CAMM is available 
in greyscale, color, TVI, Tissue Tracking, Strain rate and 
1. Assignable keys:
• Horizontal sweep R
• Frequency/Resolution
• Focus
• Contour
• Up/Down
• Color maps
2. Zoom
3. Img Size
4. Soft menu
• Compress R
• Reject R
• Dynamic Range
• Power
5. Freeze
6. M-Mode
7. Access to AMM & 
CAMM
8. Gain R
Controls marked with R are 
also available in freeze and 
cine replay
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2
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Strain modes.
M-Mode and 2D Mode display areas can be side by side or top/
bottom. Conventional M-Mode can be combined with Color 
(see ’Color M-Mode overview’ on page 105).
M-Mode controls
M-Mode assignable controls
Horizontal sweep
Adjusts the horizontal refresh rate of the M-Mode area of the 
display. Horizontal sweep does not change the acquisition 
resolution, so that user can change the horizontal sweep in 
replay (with no loss of quality).
On some low fre-
quencies, the sys-
tem switches 
automatically to 
second-harmonic 
mode. The word 
“Octave” appears 
in the status win-
dow.Frequency/Resolution
Enables the adjustment of the probes operating frequency. 
Rotate the knob clockwise to increase the frequency. The 
selected frequency is displayed in the status window. For some 
probes/applications the lowest frequency settings will be 
Octave imaging settings.
Focus
Changes the location of the focal point(s). A triangular focus 
marker indicates the depth of the focal point.
Contour
Controls image processing related to the extent of edge 
enhancement applied to an image.
Up/Down
Flips the M-Mode display 180 degrees.
Color maps
Displays a color map menu to optimize the greyscale 
presentation. The menu enables an option from a list of non-
linear gray-curves or different colorized curves to be selected. 
						

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M-Mode Soft menu controls
Compress
Controls the amount of contrast in the image. An index number 
is displayed in the status window to indicate the relative level of 
compression.
Reject
Adjust reject level. When this control is increased, low-level 
echoes are rejected and appear darker in the image. An index 
number is displayed in the status window to indicate the 
relative level of rejection.
Power
When power is re-
duced, it reduces 
the signal-to-noise 
ratio, so that the im-
age, spectrum or 
color scan may be-
come noisier.Controls the amount of acoustic power applied in all modes. 
When power is set to maximum, it is equal to or less than the 
maximum acoustic power permitted by the FDA. The Thermal 
Index (TI) and the Mechanical Index (MI) are displayed on the 
screen.
Dynamic Range
Enables control of the dynamic range or contrast of the image. 
When dynamic range is set to High, the image is softer and 
more low-level data is visible. 
						

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Using M-Mode
Conventional M-Mode
1. To access M-Mode from any other scan mode, press MM on 
the control panel.
2. Use the trackball to position the cursor over the required 
area of the image.
Gain, Frequency, 
Focus, Dynamic 
Range and Com-
pression affect also 
the 2D image.3. Adjust horizontal sweep, Gain, Frequency, Focus, Dynamic 
Range, Compression and Contour to optimize the display if 
necessary.
4. Press 
FREEZE to stop imaging.
Anatomical M-Mode
Anatomical M-
Mode can also be 
used with previous-
ly acquired digitally 
stored 2D images.1. From the 2D Live or M-Mode view, press ALT. 
The alternative modes are displayed on the assignable.
2. Press 
AMM
OR
1. From the 2D Live, press 
FREEZE.
2. Press 
MM to access the Anatomical M-Mode.
The Trackball as-
signable Pos (Posi-
tion) is activated.3. Use the trackball to position the cursor over the required 
area of the image.
The Trackball as-
signable Angle is 
activated.4. Press TRACKBALL to allow free rotation of the solid full-
length cursor line throughout the 2D image.
5. Rotate the solid cursor line to the desired direction.
The Trackball as-
signable Pos is acti-
vated.6. Press TRACKBALL twice and reposition the intersection 
point to the desired position along the cursor line.
7. Repeat steps 4. and 5. to change the angle of the solid 
cursor line if necessary.
The M-Mode area of 
the display updates 
as the M-Mode sig-
nal is constructed.8. Press TRACKBALL to activate scrolling control on the 
trackball.
9. Use the trackball to scroll through the data acquired at that 
location. The M-Mode display will vary accordingly.
Cur ved Anatomical M-Mode
Curved Anatomi-
cal M-Mode can al-
so be used with 
previously ac-
quired digitally 
stored 2D images.1. From the 2D or M-Mode view press ALT. 
The alternative modes appear on the assignable display.
2. Press 
CURVED AMM. 
						

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3. Use the trackball to position the starting point of the time 
motion curve.
The time motion 
curve can be edited 
by following the 
curve back to the de-
sired point and re-
drawn as desired. 
Following the curve 
back to the starting 
point will delete the 
time motion curve.4. Press SELECT to anchor the starting point of the time motion 
curve.
5. Use the trackball to position the second point of the time 
motion curve.
6. Press 
SELECT to anchor the second point of the time motion 
curve.
7. Repeat step 5. and 6. up to seven times to draw a complete 
time motion curve.
Optimizing M-Mode
Refer to page 400 
about creating pre-
sets.The use of preset gives optimum performance with minimum 
adjustment. If necessary, the following controls can be adjusted 
to further optimize the M-Mode display:
• Adjust Horizontal sweep to optimize the display resolution.
• Adjust Gain and TGC controls to adjust the range to be 
imaged.
Except for Con-
tour, all the con-
trols listed in the 
optimizing M-
Mode section will 
also affect the 2D 
image.• Use the Frequency (move to higher frequencies) or the 
Frame rate control (move to lower frame rate) to increase 
resolution in image.
• Use the Frequency (move to lower frequency) to 
increase penetration.
• Adjust Focus to move the focal point(s) around the region 
of interest in the M-Mode display.
• Adjust Dynamic range to optimize the useful range of 
incoming echoes to the available greyscale.
• Adjust Compress and Contour to further optimize the 
display.
• Adjust Reject to reduce noise while taking care not to 
eliminate significant low-level diagnostic information. 
						

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Color Mode 
Color 2D Mode over view
 Figure 3-5: The Color Mode screen
1. Probe orientation 
marker
2. Color bar
3. Color sector marker
4. Status window:
5. Soft menu
Controls marked with R 
are also available in 
freeze and cine replay. 
						

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Color M-Mode over view
 Figure 3-6: The Color M-Mode screen (top/bottom display)
1. Time motion cursors
2. Color bar
3. Focus marker
4. Flow sector marker
5. Time scale
6. Status window:
7. Soft menu
Controls marked with R 
are also available in 
freeze and cine replay. 
						

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 Figure 3-7: The Color Mode controls on the front panel
1. Assignable keys:
• Horizontal sweep 
(Color M-Mode only) R
• Scale
• LVR
• Invert R
• Variance R
• Dual focus
• Color maps
• Angio (Color 2D only)
• Cineloop (in Freeze, 
Color 2D mode only)
2. Zoom
• Display zoom
• HR zoom
3. Img Size (Color M-
Mode)
4. Soft menu
• Sample Volume
• Tissue Priority R
• DDP (Color 2D only) R
• Frequency
• Radial avg.
• Lateral avg.
• Power
5. Freeze
6. Color
7. Access to AMM & 
CAMM
8. Gain R
Controls marked with R are 
also available in freeze and 
cine replay
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