Chapter 4: Measurements and Calculations 51
Measurements
a Fromthecalculationsmenu,selectthe
measurementname.
Thecalipertoolmaychangedependingon
themeasurementselected,buttheposition
remainsconstant.
b Positionthecalipers.(See“Workingwith
calipers”onpage 33.)
c Savethecalculation.(See“Tosavea
calculation”onpage 38.)
To measure fetal heart rate (M Mode)
1 OnafrozenMModetrace,press Calcs.
2 SelectFHRfromthecalculationsmenu.
Averticalcaliperappears.
3 Usingthetouchpad,positionthevertical
caliperatthepeakoftheheartbeat,andthen
click.
Asecondverticalcaliperappears.
4 Usingthetouchpad,positionthesecond
verticalcaliperatthepeakofthe
next
heartbeat.
5 Savethecalculation.(See“Tosavea
calculation”onpage 38.)
Volume calculations
To calculate volume
Thevolumecalculationinvolvesthree2D
distancemeasurements:D
1
,D
2
,andD
3
.Afterall
measurementsaresaved,theresultappears
on‐screenandinthepatientreport.
Dothefollowingforeachimageyouneedto
measure:
a Onthefrozen2Dimage,press Calcs.
b Dothefollowingforeachmeasurement
youneedtotake:
WARNING:
To avoid incorrect calculations,
verify that the patient information,
date, and time settings are accurate.
To avoid misdiagnosis or harming
the patient outcome, start a new
patient information form before
starting a new patient exam and
performing calculations. Starting a
new patient information form clears
the previous patient’s data. The
previous patient’s data will be
combined with the current patient
if the form is not first cleared. See
“To create a new patient
information form” on page 27.
Systems and Exam Types for Volume
Calculations
Exam Types S Series System
Bre S-Cath
S-GYN
S-Women’s Health
Gyn S-FAST
S-GYN
S-Women’s Health
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