GE Logiq P5 User Manual

Generic Measurements
LOGIQ 5 Basic User Manual 7-81
Direction 2300002-100 Rev. 2
Angle
This function measures the angle between two intersecting 
planes.
1.  From the Generic Touch Panel, select Angle. 
The system displays an active caliper. 
2.  To position the caliper, move the Trackball.
3.  To fix the position of the first caliper, press Set.
The system displays a second active caliper.
4.  To position the second caliper at the apex of the angle, 
move the Trackball.
5.  To fix the position of the...

General Measurements and Calculations
7-82 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
A/B Ratio
In B-Mode and M-Mode, you can calculate A/B ratio by diameter 
or by area.
DiameterTo calculate A/B ratio by diameter:
1.  From the Generic Touch Panel, select A/B Ratio. 
2. Select ratio(Diam). 
The system displays an active caliper.
3.  Make a distance measurement of the first velocity. 
The system displays an active caliper for the second 
distance measurement.
4.  Make a distance measurement of...

Generic Measurements
LOGIQ 5 Basic User Manual 7-83
Direction 2300002-100 Rev. 2
M-Mode Measurements
 Figure 7-37. M-Mode Generic Study
% Stenosis
See ‘% Stenosis’ for more information.
A/B Ratio
See ‘A/B Ratio’ for more information. 

General Measurements and Calculations
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Direction 2300002-100 Rev. 2
Heart Rate
To calculate the heart rate:
1.  From the Generic Touch Panel, select HR. 
The system displays an active caliper. 
2.  To position the caliper at a recognizable point in the first 
cycle, move the Trackball.
3.  To fix the first caliper, press Set.
The system displays a second active caliper.
4.  To position the caliper at the identical point in the second or 
third cycle, move the Trackball....

Generic Measurements
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Direction 2300002-100 Rev. 2
Doppler Mode Measurements
In Doppler Mode, the Generic study includes the following 
measurements:
•  PI (Pulsatility Index)
•  RI (Resistive Index)
• S/D Ratio
• D/S Ratio
• A/B Ratio
•  Max PG (Pressure Gradient)
•  Mean PG (Pressure Gradient)
•  SV (Stroke Volume)
•  HR (Heart Rate)
 Figure 7-39. Doppler Mode Generic Study
NOTE:  The following instructions assume that you do the following:
1.  In the B-Mode part of the...

General Measurements and Calculations
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Direction 2300002-100 Rev. 2
Pulsatility Index (PI)
1.  From the Doppler Generic Touch Panel, select PI. 
The system displays a trace caliper.
2.  To position the caliper at the beginning of the waveform 
(V
max), move the Trackball.
3.  To fix the start point, press Set.
The system displays a second active caliper.
4.  To trace the waveform from V
max to Vd move the Trackball.
5.  To complete the measurement, press Set.
The system...

Generic Measurements
LOGIQ 5 Basic User Manual 7-87
Direction 2300002-100 Rev. 2
Resistive Index (RI)
1.  From the Doppler Generic Touch Panel, select RI. 
The system displays an active caliper with vertical and 
horizontal dotted lines.
2.  To position the caliper at the peak systolic velocity, move the 
Trackball.
3.  To fix the measure point, press Set.
The system displays a second active caliper.
4.  To position the second caliper at the end diastolic velocity, 
move the Trackball.
5.  To complete...

General Measurements and Calculations
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Direction 2300002-100 Rev. 2
S/D or D/S Ratio
To calculate the Peak Systole/End Diastole ratio or End 
Diastole/Peak Systole ratio:
1. Select S/D or D/S. 
The system displays an active caliper with vertical and 
horizontal dotted lines.
2.  To position the caliper at peak systole (PS) or end diastole 
(ED), move the Trackball.
3.  To fix the measure point, press Set.
The system displays a second active caliper.
4.  To position the...

Generic Measurements
LOGIQ 5 Basic User Manual 7-89
Direction 2300002-100 Rev. 2
A/B Ratio
In Doppler Mode you can measure A/B ratio by velocity, time, or 
acceleration.
Ve l o c i tyTo measure AB ratio by velocity:
1. Select A/B. 
2. Select ratio(Velocity). 
The system displays an active caliper with vertical and 
horizontal dotted lines.
3.  To position the caliper at the A velocity, move the Trackball.
4.  To fix the measure point, press Set.
The system displays a second active caliper.
5.  To...

General Measurements and Calculations
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Direction 2300002-100 Rev. 2
A/B Ratio (continued)
AccelerationTo measure A/B ratio by acceleration:
1. Select A/B. 
2. Select ratio(Acc). 
The system displays an active caliper.
3.  Make a distance measurement of the A acceleration point. 
a.  To position the active caliper at the start point, move the 
Trackball.
b.  To fix the start point, press Set.
The system fixes the first caliper and displays a second 
active caliper.
c.  To...