User's Manual

Acclarix AX3 Series Diagnostic Ultrasound System User Manual Measurements and Reports
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8.2.3. Obstetrics Measurements
Obstetric measurements are used to calculate the GA (Gestation Age), EDD (Estimated Delivery Date)
and EFW (Estimated Fetus Weight).
Multiple fetuses
The Obstetric package supports measurements and reports on up to four fetuses. If you know the
number of fetuses at the start of the exam then you can enter this in the Patient page (see section 4.4).
When the number of fetuses is known the system adjusts the user interface to optimize for that
number. If no information is entered about the number of fetuses the system will assume there is one.
Except where noted below, every measurement and calculation supports multiple fetuses.
The system supports the B/D/M obstetric measurements.
No.
OB Measurement
Description
Tool
Section 1: B-mode Measurements
1.1
GS
Gestational Sac
Caliper
1.2
YS
Yolk Sac
1.3
CRL
Crown Rump Length
1.4
NT
Nuchal Translucency
1.5
NF
Nuchal Fold
1.6
BPD
Biparietal Diameter
1.7
OFD
Occipital Frontal Diameter
1.8
HC
Head Circumference
Ellipse*
Trace*
1.9
AC
Abdominal Circumference
1.10
FL
Femur Length
Caliper
1.11
TAD
Transverse Abdominal Diameter
1.12
APAD
Anteroposterior Abdominal Diameter
1.13
CER
Cerebellum Diameter
1.14
HUM
Humerus Length
1.15
ULNA
Ulna Length
1.16
RAD
Radius Length
1.17
TIB
Tibia Length
1.18
FIB
Fibula Length
1.19
APTD
Anteroposterior Trunk Diameter
1.20
TTD
Transverse Trunk Diameter
1.21
FTA
Fetal Trunk Area
Ellipse*
Trace*
1.22
THD
Thoracic Diameter
Caliper
1.23
Foot
Foot Length