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
56 Exam-based calculations
Tomakeacorrection,selectUndo
on‐screen,backtrackwiththetouchpad,or
pressthe
BACKSPACEkey.
d Pressthe
SETkeytocompletethetrace.
e Savethecalculation.
Forinformationontheautomatictracetool,see
“Totraceautomatically(Doppler)”onpage 44.
To calculate Isovolumic Relaxation Time
(IVRT)
1 OnafrozenDopplerspectraltrace,pressthe
CALCSkey.
2 Fromthecalculationsmenu,selectMVand
thenselectIVRT.
Averticalcaliperappears.
3 Usingthetouchpad,positionthecaliperatthe
aorticvalveclosure.
4 Pressthe
SELECTkey.
Asecondverticalcaliperappears.
5 Usingthetouchpad,positionthesecond
caliperatonsetofmitralinflow.
6 Savethecalculation.(See“Tosavea
calculation”onpage 45.)
To calculate Delta Pressure: Delta Time
(dP:dT)
ToperformthedP:dTmeasurements,theCW
Dopplerscalemustincludevelocitiesof300 cm/s
orgreateronthenegativesideofthebaseline.
(See“Spectraltraceoptions”onpage 29.)
1 OnafrozenCWDopplerspectraltrace,press
the
CALCSkey.
2 Fromthecalculationsmenu,selectMV,and
thenselectdP:dT.
Ahorizontaldotted linewithanactivecaliper
appearsat100cm/s.
3 Positionthefirstcaliperalongthewaveform
at100cm/s.
4 Pressthe
SELECTkey.
Asecondhorizontaldottedlinewith an active
caliperappearsat300cm/s.
5 Positionthesecondcaliperalongthe
waveformat300cm/s.
6 Savethecalculation.(See“Tosavea
calculation”onpage 45.)
To calculate Aortic Valve Area (AVA)
TheAVAcalculationrequiresameasurementin
2DandtwomeasurementsinDoppler.Afterthe
measurementsaresaved,theresultappearsin
thepatientreport.
1 MeasurefromLVOT(2D):
a Onafrozen2Dimage,pressthe
CALCSkey.
b Fromthecalculationsmenu,selectLVOT D.
c Positionthecalipers.(See“Workingwith
calipers”onpage 41.)
d Savethecalculation.(See“Tosavea
calculation”onpage 45.)
2 MeasurefromLVOT,andthenmeasurefrom
AV(Doppler):
•ForVmax,see“Tomeasurepeakvelocity”
onpage 54.Fromthecalculationsmenu,
selectAV
,selectsamplesite,andthen
selectVmax.
•ForVTI,see“TocalculateVelocityTime
Integral(VTI)”onpage 54.Fromthe
calculationsmenu,selectAV,selectsample
site,andthenselectVTI.
To calculate Qp/Qs
TheQp/Qscalculationrequirestwo
measurementsin2Dandtwomeasurementsin
Doppler.Afterthemeasurementsaresaved,the
resultappearsinthepatientreport.
1 Onafrozen2Dimage,pressthe
CALCSkey.
2 DothefollowingtomeasurefromLVOTD
andagaintomeasurefromRVOT D: