Mindray XP8-2TU - Control Settings, Temperature; Temperature Calibration Test

TransducerControlsandInspection
26 Operator's Manual
WARNING
To avoid the risk of esophageal burn for adult patients, reduce the time spent
imaging at distal tip temperatures in excess of 42 °C (107.6 °F). At 42 °C (107.6 °F) or
higher, the exposure time of the P7-3T/P7-3Ts/P7-3TE/P7-3TU/P8-2Ts/P8-2TU/P8-3Ts/
XP8-2TU probe for adult applications should be limited to 10 minutes or less. There
is no sufficient data to prove the thermal tolerance of the esophagus in neonate and
pediatric patients, but it is apparently these patients are more vulnerable than adults.
For neonatal or pediatric applications, the P8-3Ts probe should reduce the time spent
imaging at distal tip temperatures in excess of 41 °C (105.8 °F).
3.4.2 Control Settings, Temperature
Thefollowingaregeneralguidelinesforreducingtemperaturein2DorDopplermodes.
•
Ingeneral,imagingin2Dmoderesultsinthelowesttransducersurfacetemperature.
•
Whenimagingin2Dmode,increasingtheimagedepthgenerallyreducesthe
transducersurfacetemperature.
•
Whenimagingincolormode,therearenoimagingchangesthatreducethetransducer
surfacetemperature.
•
WhenimaginginPWDopplermode,decreasingthePRFand/orpositioningthe
Dopplersamplegatetoashallowerdepthgenerallyreducesthetransducersurface
temperature.
•
WhenimaginginCWDopplermode,increasingthedepthoftheCWDopplersample
line(2DimagedepthpriortoturningonDopplertracemode)generallyreducesthe
transducersurfacetemperature.
•
Inanyimagingmode,freezingtheimagewilltemporarilyreducethetransducer
surfacetemperature.
3.4.3 Temperature Calibration Test
Thetemperaturemeasurementfunctionshouldbeverifiedtothespecificationsatleast
onceayear.
Test Setup
Assemblethefollowingitemsforthetest.
•
Temperaturestabilizedwaterbath
•
Temperaturegaugewithaccuracyof±0.1°C
Temperature Calibration Test
1.
Adjustthewaterbathtemperatureto41°±0.1°Candmonitorthetemperaturewiththe
gauge.
Ifanaccurateandstablewaterbathisnotavailable,theaddedinaccuracymustbe
takenintoaccountwhenthetemperatureisreadfromtheultrasoundsystem.Deviation
ofmorethan±0.5°Cisnotacceptable.Maintainingthisaccuracywithouttemperature
regulationmaybedi󰀩cult.
2.
ConnecttheTEEtransducertotheultrasoundsystem.
3.
Press<Freeze>andsetpatienttemperaturetobe41°Conultrasoundsystem.
4.
Putthetransducertipinthewaterbath.