GE LOGIQ A100, Technical Publication

Page: 193 / 408

OB Report Page
177
LOGIQ
t α
100 User Manual
2211157–100 Rev 0
U.S. Version Report Page (cont’d)
BPD: The Biparietal Diameter in mm last measured or
averaged. The EGA as per Hadlock table is given in
weeks and days.
HC: The Head Circumference in mm last measured or
averaged. The EGA as per Hadlock table is given in
weeks and days.
OFD: The Occipito Frontal Diameter calculated from HC.
AC: The Abdominal Circumference last measured or
averaged in mm. The EGA as per Hadlock table is given
in weeks and days.
TAD and APD: The Transverse Abdominal Diameter
and Abdominal Anterior–Posterior Diameter. Both the
TAD and APD are obtained only when the abdominal
circumference is measured by the two-diameter method.
TAD is the first distance measured and APD is the
second.
FL: The Femur Length last measured or averaged. The
EGA as per Hadlock table is given in weeks and days.
CRL: The Crown Rump Length last measured or
averaged. The EGA as per Hadlock table is given in
weeks and days.
UTn: Refer to the OB User Section Table on page 209
for details of this field.
CI: Cephalic IndexThe ratio of BPD to OFD (Occipito
Frontal Diameter).
Cephalic Index (%) = 100 BPD / OFD
Cephalic index’s normal value is 79
"
8%.
The HC should have been measured for calculation of
Cephalic Index. The OFD is taken as the long axis of HC.
If HC has been measured by trace method, then, the
Cephalic Index will not be calculated.
.