Philips Expression MR400 - Using the Gating Feature; Using ECG Gating

D‐2GatingFeatureExpressionMR400InstructionsforUse
Symphony,SiemensAlvanto,Phi lipsIntera,etcetera;seepage1‐35).Fordetailedsignal
characteristicsofthegatingoutputs,seeA‐28.
Using the Gating Feature
ThegatingfeatureprovidesfacilitiesforlowlatencyMRItriggeringandsynchronizationbasedon
themeasuredECGorSPO2signal.DatameasuredandtransmittedbythewECGorwSpO2
moduleisprocessedbytheMR400andoutputatthegatingconnector;seepage1‐19forthe
location,andseethe
tableattheendofthisappendixforsignaldetails.(Signalscanalso
transmittedbytheoptionalwBTU.)
Using ECG Gating
ToreceiveECGgatingsignals
Step Action
1CheckthebatteryindicatorsonthewECGmoduletoensurethat
enoughchargeexistsinatleastoneoftheinstalledbatteries:
• Greenbatteryindicator=Charge sufficient;proceedtostep3.
•Redbatteryindicator=Chargelow;proceedtostep2.
Seepage2‐9for
details.(Also,youcanreferencethestatus
informationpane;seepage2‐16.)
2 Accordingtotheredbatteryindicator(s)presentonthewECG
module,insertachargedmodulebatteryintothecorresponding
batterybay(s) andthenrecheckthebatteryindicator(s)toensurea
sufficientchargebeforeproceeding;seepage1‐24.

3CheckthenetworkchannelindicatoronthewECGmoduleto
ensurecommunicationisestablishedwiththeMR400:
• Steady=Goodcommunication;proceedtostep5.
• Flashing=Nocommunication;proceedtostep4.
Seepage2‐10fordetails.(Also,youcanreferencethestatus
informationpane;seepage2‐16.)
4Ensure
thatthewECGmoduleiswithin9.1m(30feet)ofthe
MR400,inthesameMRIroomorinthesameshieldedroom,andis
settothesamewirelessnetworkchannelusedbytheMR400;see
page1‐29.
5Ensurethatthelead cableisproperlyattachedto
thepatient;see
AttachingtheECGLeadCableonpage5‐12.
(ECGoutputsareenabledbydefault;seepage5‐29.)
6ItmaybenecessarytouseT‐WaveSuppression,seepage5‐33.