GE Logiq P5 User Manual

OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-45
Direction 2300002-100 Rev. 2
Heart Rate
To calculate the heart rate:
1.  From the Generic Touch Panel, select Heart Rate. 
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....

OB/GYN
9-46 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
Doppler Mode Measurements
You can use Doppler mode to study fetal blood flow in the heart, 
umbilical cord, placenta, and middle cerebral arteries. OB/GYN 
Doppler mode also allows you to study uterine and ovarian 
blood flow.
The OB/GYN vessel study includes the following vessels:
• Aorta
• Desc. Aorta
•  Middle Cerebral Artery (MCA) (right and left)
•  Ovarian (right and left)
• Placenta
• Umbilical
•  Uterine (right and left)
For each...

OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-47
Direction 2300002-100 Rev. 2
To select OB/GYN vessel measurements
OB/GYN Vessel measurements use the auto sequence feature. 
With this feature, when you select a folder for the vessel you 
want to measure, the system automatically starts the first 
measurement. It then continues with each of the other 
measurements in that study.
1.  Select the folder for the vessel you want to measure.
The system shows all the measurements for that vessel....

OB/GYN
9-48 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
Acceleration
1. Select Accel. 
The system displays an active caliper with vertical and 
horizontal dotted lines.
2.  To position the caliper at the onset of systole, 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 early systolic peak, move 
the Trackball.
5.  To complete the measurement, press Set.
The system displays the acceleration time and...

OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-49
Direction 2300002-100 Rev. 2
Heart Rate
This measurement is available in the Fetal Heart study and the 
OB/GYN Vessel study.
To calculate the heart rate:
1. Select Heart Rate. 
The system displays an active caliper and a vertical dotted 
line. 
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...

OB/GYN
9-50 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
Peak Systole (PS), End Diastole (ED), or Mid Diastole (MD)
To calculate the peak systole, end diastole, or mid diastole:
1. Select PS, ED, or MD. 
The system displays an active caliper with vertical and 
horizontal dotted lines.
2.  To position the caliper at the measurement point, move the 
Trackball.
3.  To complete the measurement, press Set.
The system displays the peak systole, end diastole, or mid 
diastole in the Results Window....

OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-51
Direction 2300002-100 Rev. 2
PS/ED or ED/PS Ratio
To calculate the Peak Systole/End Diastole ratio or End 
Diastole/Peak Systole ratio:
1. Select PS/ED or ED/PS. 
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...

OB/GYN
9-52 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
TA M A X
1. Select TA M A X. 
The system displays a trace caliper and a vertical dotted 
line.
2.  To position the caliper, move the Trackball.
3.  To fix the start point, press Set.
The system displays a second active caliper.
4.  To trace the waveform, move the Trackball.
5.  To complete the measurement, press Set.
The system displays VTI, Time, and TAMAX in the Results 
Window.  

OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-53
Direction 2300002-100 Rev. 2
OB Worksheet
The OB Worksheet lists patient information, and all 
measurement and calculation data.
To view the OB Worksheet:
1. Press Measure.
2. Select Worksheet Display. 
 Figure 9-6. OB Worksheet
The OB Worksheet has three sections of information:
1. Patient data
2. Measurement information
3. Calculation information
2
3
1 

OB/GYN
9-54 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
Patient data
The Patient data section, at the top of the worksheet, lists 
information from the Patient Data Entry screen. 
You can select the following fields:
•  FetusNo – if this is a multi-gestational patient, you can 
select the fetus in this field. You can also adjust the Fetus 
knob to select the fetus.
•  CUA/AUA – select the ultrasound age calculation method
•  Composite Ultrasound Age (CUA) – regression 
calculation
•  Average...