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
142 Measurement publications and terminology
Delta Pressure: Delta Time (dP:dT) in
mmHg/s
Otto,C.M.TextbookofClinicalEchocardiography.
2nded.,W.B.SaundersCompany,(2000),117,
118.
32 mmHg/timeinterval inseconds
E:A Ratio in cm/sec
E:A=velocityE/velocityA
E/Ea Ratio
Reynolds,Terry.TheEchocardiographer’sPocket
Reference.2nded.,SchoolofCardiacUltrasound,
ArizonaHeartInstitute,(2000),225.
EVelocity/Eavelocity
where: Evelocity=MitralValveEvelocity
Ea=annularEvelocity,alsoknown
as:Eprime
Effective Regurgitant Orifice (ERO) in mm
2
Reynolds,Terry.TheEchocardiographer’sPocket
Reference.2nded.,SchoolofCardiacUltrasound,
ArizonaHeartInstitute,(2000),455.
ERO=6.28(r
2
)*Va/MRVel
where: r=radius
Va=aliasingvelocity
Ejection Fraction (EF), percent
Oh,J.K.,J.B.Seward,A.J.Tajik.TheEchoManual.
2nded.,Lippincott,Williams,andWilkins,
(1999),40.
EF=((LVEDV–LVESV)/LVEDV)*100%
where: EF=EjectionFraction
LVEDV=LeftVentricularEnd
DiastolicVolume
LVESV=LeftVentricularEnd
SystolicVolume
Elapsed Time (ET) in msec
ET=timebetweenvelocitycursorsin
milliseconds
Heart Rate (HR) in bpm
HR=3digitvalueinpu tbyuserormeasuredon
MModeand Dopplerimageinoneheartcycle
Interventricular Septum (IVS) Fractional
Thickening, percent
Laurenceau,J.L.,M.C.Malergue.TheEssentialsof
Echocardiography.LeHague:MartinusNijhoff,
(1981),71.
IVSFT=((IVSS–IVSD)/IVSD)*100%
where: IVSS=InterventricularSeptal
ThicknessatSystole
IVSD=InterventricularSeptal
ThicknessatDiastole
Isovolumic Relaxation Time (IVRT) in msec
Reynolds,Terry.TheEchocardiographer’sPocket
Reference.SchoolofCardiacUltrasound,Arizona
HeartInstitute,(1993),146.
|timea‐timeb|
Left Atrium/Aorta (LA/Ao)
Feigenbaum,H.Echocardiography.Philadelphia:
LeaandFebiger,(1994),206,Figure4‐49.
Left Ventricular End Volumes (Teichholz) in
ml
Teichholz,L.E.,T.Kreulen,M.V.Herman,et.al.
“Problemsinechocardiographicvolume
determinations:echocardiographic‐angiographic
correlationsinthepresenceorabsenceof
asynergy.”AmericanJournalofCardiology,(1976),
37:7.
LVESV=(7.0*LVDS
3
)/(2.4+LVDS)
where: LVESV=LeftVentricularEnd
SystolicVolume