User's Manual
Table Of Contents
- M-Turbo Ultrasound System User Guide
- Contents
- Introduction
- Chapter 1: Getting Started
- Chapter 2: System Setup
- Displaying the setup pages
- Restoring default settings
- A & B Key, Footswitch setup
- Administration setup
- Annotations setup
- Audio, Battery setup
- Cardiac Calculations setup
- Connectivity setup
- Date and Time setup
- Display Information setup
- IMT Calculations setup
- Network Status setup
- OB Calculations setup
- OB Custom Measurements setup
- OB Custom Tables setup
- Presets setup
- System Information setup
- USB Devices setup
- Chapter 3: Imaging
- Chapter 4: Measurements and Calculations
- Chapter 5: Troubleshooting and Maintenance
- Chapter 6: Safety
- Ergonomic safety
- Electrical safety classification
- Electrical safety
- Equipment safety
- Battery safety
- Clinical safety
- Hazardous materials
- Electromagnetic compatibility
- ALARA principle
- Acoustic artifacts
- Guidelines for reducing MI and TI
- Output display
- Transducer surface temperature rise
- Acoustic output measurement
- Acoustic output tables
- Labeling symbols
- Chapter 7: References
- Chapter 8: Specifications
- Glossary
- Index
Chapter 4: Measurements and Calculations 63
Measurements
a. The Gestational Age is automatically calculated and displayed
next to the OB measurement you selected. The average of the
results is the AUA.
b. For Tokyo U., APTD and TTD are used only to calculate EFW. No
age or growth tables are associated with these
measurements.
c. The Estimated Fetal Weight calculation uses an equation that
consists of one or more fetal biometry measurements. The
author for the OB tables, which you choose on a system setup
page, determines the measurements you must perform to
obtain an EFW calculation. (See “OB Calculations setup” on
page 20.)
Individual selections for Hadlock’s EFW equations 1, 2, and 3
are not determined by the user. The selected equation is
determined by the measurements that have been saved to
the patient report with priority given to the order listed
above.
d. The Growth Analysis tables are used by the Report Graphs
feature. Three growth curves are drawn using the table data
for the selected growth parameter and published author.
Growth tables are only available with a user-entered LMP or
Estab. DD.
To measure gestational growth (2D)
Foreach2DOBmeasurement(exceptAFI),the
systemsavesuptothreeindividual
measurementsandtheiraverage.Ifyoutake
morethanthreemeasurements,the earliest
measurementisdeleted.
1 Inthepatientinformationform,selectOB
examtype,andselectLMPorEstab.DD.Select
Twinsifappropriate.
2 Ona
frozen2Dimage,presstheCALCSkey.
3 Dothefollowingforeachmeasurementyou
wanttotake:
a Fromthecalculationsmenu,selectthe
measurementname.Fortwins,select
Twin AorTwin B,andthenselectthe
measurementname.
Thecalipertoolmaychangedependingon
themeasurementselected,butthe position
remainsconstant.
b Positionthecalipers.(See
“Workingwith
calipers”onpage 41.)
c Savethecalculation.(See“Tosavea
calculation”onpage 45.)
To measure fetal heart rate (M Mode)
1 OnafrozenMModetrace,presstheCALCS
key.
2 SelectFHRfromthecalculationsmenu.
Averticalcaliperappears.
Estimated Fetal
Weight (EFW)
c
HC, AC, FL Hadlock 1
BPD, AC, FL Hadlock 2
AC, FL Hadlock 3
BPD, TTD Hansmann
BPD, FTA, FL Osaka U.
BPD, AC Shepard
BPD, TTD, APTD, FL Tokyo U.
Ratios HC/AC Campbell
FL/AC Hadlock
FL/BPD Hohler
FL/HC Hadlock
Amniotic Fluid
Index
Q
1
, Q
2
, Q
3
, Q
4
Jeng
Growth Analysis
Tables
d
BPD Chitty,
Hadlock,
Jeanty
HC Chitty,
Hadlock,
Jeanty
AC Chitty,
Hadlock,
Jeanty
FL Chitty,
Hadlock,
Jeanty
EFW Hadlock,
Jeanty
HC/AC Campbell
Calculation
Result
Gestational OB
Measurements
Table
Authors