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OB Measurements and Formulas
LOGIQ 500 Basic Users Manual
2276612–100 Rev. 0
9–8
Osaka University Method
PLI
Vmax
HEART
RATE
OB
Graph
OB
Report
ANATOMY
SURVEY
BPD
CRL
FTA
FL
HL
EFBW
OB
Report
USER1
EF
CTAR
USER2
USER3
USER4
OB
Graph
OB
Report
USER5
Select
Locatn
S/D
Ratio
RI
A/B
Ratio
TRACE
AUTO
Transf
CALCs
PI
1
Transf CALCS is only available with Realtime Doppler Calculation option installed
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Figure 9–2. Osaka University Sub-Menus
Calc
Mnemonic
Calc Name
Input Measurements
Formula
Author
Reference
HR
Heart Rate
(beats/minute)
one 2 beat time
(measured manually or
automatically)
HR[BPM]=120[sec]/
2beat time[sec]
n/a
CRL
Crown Rump
Length
one distance
Curve data is available in
the Advanced Reference
Manual
Osaka University
Method 1989,
3 by Univ of
FL
Femur Length
one distance
Manual
3 by Univ. of
Osaka
BPD
Biparietal
Diameter
one distance
HL
Humerus Length
one distance
FTA
Fetal Trunk Cross
Sectional Area
one area
APTD = input
Osaka University
Method 1989,
3 by Univ. of
Osaka
Table 9–2. OB Calculation Formulas—Osaka University Factory Defaults
Summary of Contents for 500
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