GE LOGIQ A100, Technical Publication

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OB Report Page
180
LOGIQ
t α
100 User Manual
2211157–100 Rev 0
U.S. Version Report Page (cont’d)
S
BPD, HC, AC and FL measurements, if
completed, are by default used in CUA
calculation.
S
Measurements other than BPD, HC, AC and FL
are not used in CUA calculation. If they are forced
to be used (by selecting “Y” in their field) then
CUA is calculated using the formula:
CUA
+
G
1
) G
2
) G
3
) ... ) G
n
n
where G
1
, G
2
, ... G
n
are the Gestational Ages obtained
from the corresponding measurements selected for use
in CUA calculations and n is the total number of such
measurements used.
AUA: AUA is the mean of the gestational ages obtained
from various measurements. By default, all completed
measurements are used in AUA calculation. To execute
a measurement in AUA calculation, choose “N” in the
appropriate field.
LMP (EGA): The Last Menstrual Period calculated from
Estimated Ultrasound age. It is calculated from the
formula:
LMP (EGA) = {Exam date} – {Estimated Gestational Age}
LMP (CUA or AUA): The Last Menstrual Period
calculated from CUA or AUA as selected in the Setup
Menu. It is calculated from the formula:
LMP (CUA or AUA) = {Exam date} – {CUA or AUA as
selected in setup}
EDD (EGA): It is the estimated delivery date computed
from the estimated gestational age at the time of the
exam. This is dependent on the value entered above and
is calculated using the formula:
EDD (EGA) = {Exam date} – {EGA} + {40 weeks or 41
weeks as selected in setup}
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