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 6: Safety 103
Safety
EvenwhenMIislessthan1.0,thesystemprovidesacontinuousreal‐timedisplayofMIinall
imagingmodes,inincrementsof0.1.
ThesystemmeetstheoutputdisplaystandardforTIandprovidesacontinuousreal‐time
displayofTIinallimagingmodes,inincrementsof0.1.
The
TIconsistsofthreeuser‐selectableindices,andonlyoneoftheseisdisplayedatanyone
time.InordertodisplayTIproperlyandmeettheALARAprinciple,theuserselectsan
appropriateTIbasedonthe specificexambeingperformed.SonoSiteprovidesacopyofAIUM
MedicalUltrasound
Safety,whichcontainsguidanceondeterminingwhichTIisappropriate (See
“Relatedguidancedocuments”onpage 104).
MI and TI output display accuracy
Theaccuracy resultfortheMIisstatedstatistically.With95%confidence,95%ofthemeasured
MIvalueswillbewithin+18%to‐25%ofthedisplayedMIvalue,or+0.2ofthedisplayedvalue,
whichevervalueislarger.
TheaccuracyresultfortheTIisstatedstatistically.With95%confidence,
95%ofthemeasured
TIvalueswillbewithin+21%to‐40%ofthedisplayedTIvalue,or+0.2ofthedisplayedvalue,
whichevervalueislarger.Thevaluesequateto+1dB to‐3dB.
Adisplayedvalueof0.0forMIorTImeansthatthecalculatedestimatefortheindex
islessthan
0.05.
Factors that contribute to display uncertainty
Thenetuncertaintyofthedisplayedindicesisderivedbycombiningthequantifieduncertainty
fromthreesources:measurementuncertainty,systemandtransducervariability,and
engineeringassumptionsandapproximationsmadewhencalculatingthedisplayvalues.
Measurementerrorsoftheacousticparameterswhentakingthereferencedataarethemajor
sourceoferror
thatcontributestothedisplayuncertainty.Themeasurementerrorisdescribed
in“A c o u s t i c measurementprecisionanduncertainty”onpage 133.
ThedisplayedMIandTIvaluesarebasedoncalculationsthatuseasetofacousticoutput
measurementsthatweremadeusingasinglereferenceultrasoundsystemwithasingle
referencetransducer
thatisrepresentativeofthepopulationoftransducersofthattype.The
referencesystemandtransducerarechosenfromasamplepopulationofsystemsand
transducerstakenfromearlyproductionunits,andtheyareselectedbasedonhavingan
acousticoutputthatisrepresentativeofthenominalexpectedacousticoutputfor
all
transducer/systemcombinationsthatmightoccur.Ofcourseeverytransducer/system
TEEx/8-3 MI No No No No
TIC, TIB, or TIS No No Yes Yes
Table 5: TI or MI ≥ 1.0 (Continued)
Transducer Model Index
2D/
MMode
CPD/
Color
PW
Doppler
CW
Doppler