GE Voluson Swift, Инструкция по эксплуатации

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3. Accept the result (Peak Systolic/Diastolic Velocity, Min./End/Mean Diastolic Velocity,
Velocity Time Integral, TAmax) . The measurement is finished and Auto Trace is
switched off.
Manual Trace
To use this manual trace tool:
1.
Select Manual Trace . The measurement cursor appears.
2. Position the starting point and fix it with
Set
.
3. Trace the envelope boundary and enter the end point to finish the measurement. The
values (Peak Systolic/Diastolic Velocity, Min./End/Mean Diastolic Velocity, Velocity Time
Integral, Heart Rate, Slope, Pressure Gradient Mean, Time, TAmean, PeakA) are
calculated and displayed.
Accel.
To measure the acceleration:
1.
Select Accel . The measurement cursor appears.
2. Position the first point with the trackball and press
Set
. A second cursor appears.
3. Position the second point of the measurement and press Set .
PS/ED Velocity Ratio
To calculate the Peak Systolic Velocity and the End Diastolic Velocity Ratio:
1.
Select
PS/ED
. The measurement cursor appears.
2. Move the cursor to the peak systolic velocity and press Set . A second cursor appears.
3. Position the second cursor at the end diastolic velocity and press
Set
.
RI (Resistance Index)
To measure the RI:
1.
Select RI . The measurement cursor appears.
2. Move the cursor to the peak systolic velocity and press
Set
. A second cursor appears.
3. Move the second cursor to the end diastolic velocity and press Set .
PI (Pulsatility Index)
To measure the PI:
1.
Select
PI
. The measurement cursor appears.
2. Move the cursor to the start of the measurement and press Set .
3. Trace the curve.
4. Move the second cursor to the end of the measurement and press Set .
Note To readjust the traced line press Undo repeatedly.
PG (Pressure Gradient) Measurements: PG mean/PG max
To measure PGmax:
1.
Select
PGmax
. The measurement cursor appears.
2. Move the cursor to the pressure gradient point and press Set to fix the marker.
To measure PGmean:
1.
Select PGmean . The measurement cursor appears on the screen.
Measurements and Calculations
10-12
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4