Crown Rump Length (Crl) - GE LOGIQ A100 Technical Publication

OB Measurements

Crown Rump Length (CRL)

Crown Rump Length measures the distance from the
head to the rump (gluteal region) of the fetal body to
estimate the fetal age.
+ +
Select [1] in Main Menu of the Osaka University version.
1
Select [2] in the Main Menu of the European version.
2
Select [3] in Main Menu of the Tokyo University version.
3
.
Select [5] in the U.S. and Australian versions.
5
If the relevant Distance Measurement is already
available, the Gestational Age is calculated and appears
in the Calculation Result Area of the display.
Use the TRACKBALL to position the open ended
TB
' ' cursor at the start point of the measurement.
Press SET to fix the start point. A second open ended
' ' cursor appears.
Use the TRACKBALL to move the cursor to the end point
of the measurement.
TB
Press SET to fix the end point. The Gestational Age
appears in the Calculation Result Area of the display.
Should further measurements need to be taken, press
SET again to invoke the second cursor and follow the
procedure as indicated above. Four calculations can be
taken at the same time.
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