GE Logiq P5 User Manual

							OB Exam
LOGIQ 5 Basic User Manual 9-5
Direction 2300002-100 Rev. 2
To Start an Obstetrics Exam (continued)
NOTE:  To fill in the following information, move the Trackball to 
highlight the Detail button and press Set. Table 9-1: Obstetric fields
FieldDescription
LMP Last Menstrual Period; enter the date that the patient 
started her last menstrual period, in mm/dd/yyyy format. 
You must enter 4 digits for the year. When you type the 
month and day, the system fills in the /. 
BBT Basal Body Temperature.
EDD by LMP Estimated Delivery Date by LMP; the system fills in the 
date after you enter the LMP. 
GA by LMP Gestational Age by LMP; the system fills in the age after 
you enter the LMP. 
Gravida Number of pregnancies.
Para Number of births.
AB Number of abortions.
Ectopic Number of ectopic pregnancies.
Fetus # Number of fetuses; default is 1. Can be 1-4.
Accession # Exam number used with hospital information system 
(DICOM). This is a tracking number from the worklist.
Exam 
DescriptionDescribe the type of exam.
Perf Physician The physician who performs the exam. Choose from the 
list or type the name.
Ref. Physician The physician who requested the exam. Choose from the 
list or type the name.
Operator The person (not a physician) who performs the scan. 
Choose from the list.
Table 9-2: Obstetric fields: Detail
FieldDescription
Indications  Why the patient needs the ultrasound exam.
Comments Comments about the exam. 
						

							OB/GYN
9-6 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
To Start an Obstetrics Exam (continued)
After you complete the patient information, you can begin the 
scan. 
1.  To change from the Patient Data Entry screen to the Scan 
screen, do one of the following:
•  On the keyboard, press Esc or Patient.
•  On the Touch Panel, select Scan.
•  On the Control Panel, press the B-Mode key.
The system displays the Scan screen.
2.  To choose the appropriate probe, select the probe icon on 
the Touch Panel.
3.  On the Control Panel, press Measure.
The default Obstetrics study is displayed on the 
Touch 
Panel
. Figure 9-1 shows the OB-General study.
 Figure 9-1. OB-General Study 
						

							OB Exam
LOGIQ 5 Basic User Manual 9-7
Direction 2300002-100 Rev. 2
To choose a study
1.  To change the study, on the Touch Panel, select Study.
The Obstetrics exam category allows you to choose from 
the following studies:
• Generic
• OB-1
• OB-2/3
• OB-General
• Fetal Heart
• OB/GYN Vessel
2.  To select a study, press the study folder on the Touch Panel.
 Figure 9-2. OB Study Touch Panel
NOTE:  The folders you see on the Touch Panel may be different if your 
system has been customized.  
						

							OB/GYN
9-8 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
OB Measurements and Calculations
Introduction
Measurements and calculations derived from ultrasound images 
are intended to supplement other clinical procedures available 
to the attending physician. The accuracy of measurements is not 
only determined by the system accuracy, but also by use of 
proper medical protocols by the user. When appropriate, be sure 
to note any protocols associated with a particular measurement 
or calculation. Formulas and databases used within the system 
software that are associated with specific investigators are so 
noted. Be sure to refer to the original article describing the 
investigators recommended clinical procedures. 
						

							OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-9
Direction 2300002-100 Rev. 2
Introduction (continued)
When you make measurements, you can select the calculation 
before you make the measurement or after you make it. If you 
select the calculation before you make the measurement, the 
Results Window shows the estimated fetal age as you make the 
measurement. If you select the calculation after you make the 
measurement, the estimated fetal age is displayed after you 
complete the measurement. The measurements steps in this 
section tell you to select the calculation before you make the 
measurement.
The following pages describe how to make OB measurements 
and calculations. The measurements are organized by mode, 
and within mode are listed in alphabetical order.
Out of Range – If the system indicates that a measurement is 
out of range (OOR), it means one of the following:
•  The measurement is out of the normal range based on the 
gestational age that is calculated from the LMP. The system 
determines OOR from the ultrasound age compared to the 
gestational age. The gestational age is calculated from the 
last menstrual period or the estimated delivery date.
•  The measurement is outside of the range for the data used 
in the calculation. That means that the measurement is 
either less than or more than the range of measurements 
used to determine fetal age based on the measurement.
NOTE:  Calculation formulas are listed in the Advanced Reference 
Manual. 
						

							OB/GYN
9-10 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
B-Mode Measurements
This section describes all B-Mode measurements that you 
typically find in OB studies.
Abdominal Circumference (AC)
To calculate abdominal circumference, you make an ellipse, 
trace, or two distance measurements.
Ellipse1. Select AC; an active caliper displays.
2.  If necessary, select AC until Ellipse is displayed above the 
key.
3.  To position the active caliper, move the Trackball.
4.  To fix the start point, press Set.
The system fixes the first caliper and displays a second 
active caliper.
5.  To position the second caliper, move the Trackball.
6. Adjust the Ellipse control; an ellipse with an initial circle 
shape displays.
•  To position the ellipse and to size the measured axes 
(move the calipers), move the Trackball.
•  To increase the size, adjust the Ellipse control in a 
clockwise direction. 
•  To decrease the size, adjust the Ellipse control in a 
counterclockwise direction.
•  To toggle between active calipers, press Measure.
7.  To complete the measurement, press Set.
The system displays the circumference in the Results 
Window. USAEuropeTokyoOsakaASUM
HINTSBefore you complete the ellipse measurement:
•  To erase the ellipse and the current data measured, press 
Clear once. The original caliper is displayed to restart the 
measurement.
•  To exit the measurement function without completing the 
measurement, press Clear a second time. 
						

							OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-11
Direction 2300002-100 Rev. 2
Abdominal Circumference (AC) (continued)
Trace1. Select AC; an active caliper displays.
2.  If necessary, select AC until Trace is displayed above the 
key.
3.  To position the trace caliper, move the Trackball.
4.  To fix the trace start point, press Set.
The trace caliper changes to an active caliper.
5.  To trace the measurement area, move the Trackball around 
the anatomy.
6.  To complete the measurement, press Set.
The system displays the circumference in the Results 
Window.
HINTSBefore you complete the ellipse 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. 
						

							OB/GYN
9-12 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
Abdominal Circumference (AC) (continued)
Two distances1. Select AC; an active caliper displays.
2.  If necessary, select AC until Trace is displayed above the 
key.
3.  To make the first distance measurement:
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 position the second active caliper at the end point, 
move the Trackball.
A dotted line connects the measurement points.
d.  To complete the measurement, press Set.
The system displays the distance value in the Results 
Window. After the first measurement, the system 
displays an active caliper.
4.  To make the second distance measurement, repeat steps 
a–d above.
The system displays the abdominal circumference in the 
Results Window. 
HINTS•  Before you complete a measurement (press Set):
•  To toggle between active calipers, press Measure.
•  To erase the second caliper and the current data 
measured and start the measurement again, press 
Clear once.
•  To rotate through and activate fixed calipers from other 
measurements, adjust Cursor Select.
•  After you complete the measurement, to erase all data that 
has been measured to this point, but not data entered onto 
worksheets, press Clear. 
						

							OB Measurements and Calculations
LOGIQ 5 Basic User Manual 9-13
Direction 2300002-100 Rev. 2
A/B Ratio
In B-Mode you can calculate A/B ratio by diameter or by area.
DiameterTo calculate A/B ratio by diameter:
1. Select A/B Ratio. 
2. Select ratio(Diam). 
The system displays an active caliper.
3.  Make a distance measurement of the first velocity.
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 position the second active caliper at the end point, 
move the Trackball.
A dotted line connects the measurement points.
d.  To complete the measurement, press Set.
The system displays the distance value in the Results 
Window and displays an active caliper for the second 
distance measurement.
4.  To make a distance measurement of the second velocity, 
repeat steps a–d.
The system displays each distance measurement and the  
A/B ratio in the Results Window. 
						

							OB/GYN
9-14 LOGIQ 5 Basic User Manual
Direction 2300002-100 Rev. 2
A/B Ratio (continued)
AreaTo calculate A/B ratio by area:
1. Select A/B Ratio. 
2. Select ratio(Area). 
The system displays a trace caliper.
3.  Make a trace measurement of the A velocity:
a.  To position the trace caliper at the start point, move the 
Trackball.
b.  To fix the trace start point, press Set.
The trace caliper changes to an active caliper.
c.  To trace the measurement area, move the Trackball.
A dotted line shows the traced area.
NOTE:  To erase an open trace, move the Trackball.
d.  To complete the measurement, press Set.
After the first measurement, the system displays a 
second trace caliper. 
4.  To make a trace measurement of the B velocity, repeat 
steps a–d.
The system displays the two area measurements and the  
A/B ratio in the Results Window.