GE Logiq P5 User Manual

							Mode Measurements
LOGIQ 5 Basic User Manual 7-61
Direction 2300002-100 Rev. 2
Circumference and area (trace) measurement
To trace the circumference of a portion of the anatomy and 
calculate its area: 
Measure• Press Measure twice; a trace caliper displays.
• To position the trace caliper at the start point, move the Trackball.
Set• To fix the trace start point, press Set. The trace caliper changes to an active 
caliper. 
• To trace the measurement area, move the Trackball around the anatomy. A 
dotted line shows the traced area.
Set• To complete the measurement, press Set. The system displays the 
circumference and the area in the Results Window.
HINTSBefore you complete the trace measurement:
•  To erase the line (bit by bit) back from its current point, 
move the Trackball or adjust the Ellipse control 
counterclockwise.
•  To erase the dotted line but not the trace caliper, press 
Clear once.
•  To clear the trace caliper and the current data measured, 
press Clear twice. 
						

							General Measurements and Calculations
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Direction 2300002-100 Rev. 2
Doppler Mode Measurements
Four basic measurements can be made in Doppler Mode.
• Velocity
•  TAMAX, TAMIN, and TAMEAN (Manual or Auto Trace)
•  Two Velocities with the Slope and Time Interval between 
them
• Time Interval
NOTE:  The following instructions assume that you do the following:
1.  In the B-Mode part of the display, scan the anatomy you 
want to measure.
2.  Go to the Doppler Mode part of the display.
3. Press Freeze.
Ve lo c it y
To measure velocity: 
Measure• Press Measure; an active caliper with a vertical dotted line displays.
• To position the caliper at the desired measurement point, move the Trackball.
Set• To complete the measurement, press Set. The system displays the velocity 
measurement in the Results Window. 
						

							Mode Measurements
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Direction 2300002-100 Rev. 2
TAMAX and TAMEAN (manual)  [TAMIN is not available at this time.] 
The value measured depends upon a preset selection in the... 
The three selections available are: Peak (TAMAX), Floor 
(TAMIN), and Mean (TAMEAN).
To do a manual trace of TAMAX, TAMIN or TAMEAN: 
Measure• Press Measure twice; a trace caliper displays. 
• To position the caliper at the trace start point, move the Trackball.
Set• To fix the start point, press Set.
• To trace the maximum values of the desired portion of the spectrum, move the 
Trackball.
NOTE: To edit the trace line, move the Trackball.
Set• To complete the measurement, press Set. The system displays the 
measurement values in the Results Window.  
						

							General Measurements and Calculations
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Direction 2300002-100 Rev. 2
TAMAX and TAMEAN (auto trace)  [TAMIN is not available at this time.] 
The value measured depends upon a preset selection in the... 
The three selections available are: Peak (TAMAX), Floor 
(TAMIN), and Mean (TAMEAN).
To auto trace TAMAX, TAMIN, or TAMEAN: 
Measure• Press Measure twice; an active caliper with a vertical dotted line displays.
• To position the caliper at the trace start point in the Doppler spectrum, move 
the Trackball.
Set• To fix the start point, press Set.
• To position the vertical caliper at the end point, move the Trackball.
Set• To complete the measurement, press Set. The system automatically fixes 
both calipers and traces the maximum value between the two points. The 
system displays this value in the Results Window.  
						

							Mode Measurements
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Direction 2300002-100 Rev. 2
Slope and time interval
To measure two velocity values, the time interval (sec), and 
slope (m/s2):
Measure• Press Measure three times; an active caliper with vertical and horizontal 
dotted lines displays.
• To position the caliper at the start point, move the Trackball.
Set• To fix the start point, press Set. The system fixes the first caliper and displays 
a second active caliper.
• To position the second caliper at the end point, move the Trackball.
Set• To complete the measurement, press Set. The system displays the two peak 
end point velocities, the time interval, and the slope in the Results Window. 
						

							General Measurements and Calculations
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Direction 2300002-100 Rev. 2
Time interval
To measure a horizontal time interval: 
Measure• Press Measure four times; an active caliper with a vertical dotted line 
displays.
• To position the active caliper at the start point, move the Trackball.
Set• To fix the start point, press Set. The system fixes the first caliper and displays 
a second active caliper.
• To position the second caliper at the end point, move the Trackball.
Set• To complete the measurement, press Set. The system displays the time 
interval between the two calipers in the Results Window. 
						

							Mode Measurements
LOGIQ 5 Basic User Manual 7-67
Direction 2300002-100 Rev. 2
M-Mode Measurements
Basic measurements that can be taken in the M-Mode portion of 
the display are:
• Tissue Depth (Distance)
• Time Interval
•  Time Interval and Slope
NOTE:  The following instructions assume that you do the following:
1.  In the B-Mode part of the display, scan the anatomy you 
want to measure.
2.  Go to the M-Mode part of the display.
3. Press Freeze.
Tissue depth
Tissue depth measurement in M-Mode functions the same as 
distance measurement in B-Mode. It measures the vertical 
distance between calipers.
MeasurePress Measure once; an active caliper with a vertical and horizontal dotted line 
displays.
To position the active caliper at the most anterior point you want to measure, 
move the Trackball.
SetTo fix the start point, press Set.
The system fixes the first caliper and displays a second active caliper.
To position the second caliper at the most posterior point you want to measure, 
move the Trackball.
SetTo complete the measurement, press Set.
The system displays the vertical distance between the two points in the Results 
Window. 
						

							General Measurements and Calculations
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Direction 2300002-100 Rev. 2
Time interval
To measure a horizontal time interval: 
Measure• Press Measure twice; an active caliper with a vertical dotted line displays.
• To position the caliper at the start point, move the Trackball.
Set• To fix the first caliper, press Set. The system fixes the first caliper and 
displays a second active caliper.
• To position the second caliper at the end point, move the Trackball.
Set• To complete the measurement, press Set. The system displays the time 
interval between the two calipers in the Results Window. 
						

							Mode Measurements
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Direction 2300002-100 Rev. 2
Time and slope
To measure time and slope between two points: 
MeasurePress Measure three times; an active caliper with a vertical and horizontal 
dotted line displays.
To position the active caliper at the start point, move the Trackball.
SetTo fix the start point, press Set.
The system fixes the first caliper and displays a second active caliper.
To position the second caliper at the end point, move the Trackball.
SetTo complete the measurement, press Set.
The system displays time(s) and slope between the two points in the Results 
Window. 
						

							General Measurements and Calculations
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Direction 2300002-100 Rev. 2
Viewing and Editing Worksheets
As you complete measurements, the system puts measurement 
data in the appropriate worksheets. 
To view a worksheet
To view a worksheet, select the Worksheet Display key on the 
Touch Panel.
 Figure 7-32. OB-General Study