GE Vivid 7 User Manual

Cardiac Measurement and Analysis
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2D Area measurements
1. Generate the 2D image.
2. Press 
FREEZE to stop the cineloop.
Alternative: Press 
CALIPER and AREA 
assignable.
3. Press MEASURE on the Control Panel.
4. Select Area (trace) in the Measurement Menu (see 
Figure 6-2).
5. Trackball the cursor to the start point of the measurement.
See the Status bar 
to get the next step 
to perform.6. Press SELECT to anchor the start point of the measurement.
7. Trace...

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2D Volume measurements
The measurements described in this section enable volume 
measurement in a defined zone. The measurements tool 
generates results by two methods:
For measurement 
formulae, refer to 
the Reference 
Manual.•  Method of Disk (displayed as Vmod in the Measurement 
result table), known as Simpsons method.
•  Area/Length method (displayed as Va -l in the 
Measurement result table).
To perform a volume...

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3. Press MEASURE on the Control Panel.
See the Status bar 
to get the next step 
to perform.4. Press the assignable POINT to select the depth 
measurement function.
5. Trackball the cursor to the position to measure.
The current distance from the probe is displayed in the 
Measurement result table and is instantaneously updated 
when moving the cursor.
The measurements 
displayed on the 2D 
image and the cor-
responding...

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M-Mode Measurements
In M-Mode, the user can perform distance and time 
measurements. This measurement package has also the 
following pre-defined measurement studies: 
• LA/Ao
• LV
• RV
M-Mode Length measurements
1. Generate the M-Mode image.
2. Press 
FREEZE to stop the cineloop.
Alternative: Press 
CALIPER on the con-
trol panel and press 
CALIPER assignable.
3. Press MEASURE on the Control Panel.
4. Select caliper in the...

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Alternative: Press 
CALIPER on the con-
trol panel and press 
the 
AO/LA assign-
able.
3. Press MEASURE on the Control Panel.
4. Select Ao/LA in the Measurement Menu.
5. Trackball the cursor along the time axis to the required point 
to start measurement of Aorta root diameter.
See the Status bar 
to get the next step 
to perform.6. Press SELECT.
The starting point for the measurement is anchored.
7. Trackball to the end point...

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8. Press SELECT.
The IVSd measurement end point is anchored and the 
value is displayed in the Measurement result table.
The end point of the IVSd is also the start point for the LVIDd.
1. Trackball to the end point of the LVIDd measurement.
2. Press 
SELECT.
The LVIDd measurement end point is anchored and the 
value is displayed in the Measurement result table.
The end point of the LVIDd is also the start point for the...

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The RVIDs value is displayed in the Measurement result 
table. 

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Doppler Measurements
The following measurements may be calculated on Doppler 
mode spectra:
For measurement 
formulae, refer to 
the Reference 
Manual.•  Maximum (peak) and mean velocity
•  Maximum and mean pressure gradient
• Pressure half-time (PHT)
•  Velocity time integral (VTI)
•  Mitral valve area (MVA), derived from PHT
Velocity and Pressure point measurements
1. Generate the spectrum to be measured.
2. Press 
FREEZE to...

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•  Time difference (dT) between anchored points position
The measurement 
display on the spec-
trum and the corre-
sponding result are 
numbered.9. To assign a label to the measurement, see page 227.
10. Repeat steps 5 through 8 to make additional 
measurements.
Manual Doppler trace measurements
Adjust Compress 
and reject controls 
to optimize the 
Doppler signal.1. Generate the spectrum to be measured.
2. Press 
FREEZE to...

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7. Trackball to the end trace position.
8. Press 
SELECT to anchor the end point of the trace.
The trace is automatically generated and the following 
measurements are displayed in the Measurement result 
table:
•  Maximum and mean Velocities
•  Maximum and mean pressures
• Env. Ti 
•  Velocity time integral (VTI)
9. Trackball the cursor to the next heart beat.
10. Press 
SELECT to anchor the next heart beat starting point....