Philips Expression MR400 - References

ExpressionMR400InstructionsforUse GuidelinesandReferencesE‐3
12. Donotpositionelectricallyconductivematerialsacrossanexternalmetallicprosthesis
(e.g.,externalfixationdevice,cervicalfixationdevice,etcetera)orsimilardevicethatisin
directcontactwiththepatient.
13. Al lowonlyproperlytrainedindividualstooperatedevices(e.g.,monitoring
equipment)in
theMRenvironment.
14. Followallmanufacturerinstructionsfortheproperoperationandmaintenanceof
physiologicmonitoringorothersimilarelectronicequipmentintendedforuseduringMR
procedures.
15. ElectricaldevicesthatdonotappeartobeoperatingproperlyduringtheMRprocedure
shouldberemovedfromthepatientimmediately.
16. Closely
monitorthepatientduringtheMRprocedure.Ifthepatientreportssensationsof
heatingorotherunusualsens ation,discontinuetheMRprocedureimmediatelyand
performathoroughassessmentofthesituation.
17. RFsurfacecoil decouplingfailurescancauselocalizedRFpowerdepositionlevelstoreach
excessivelevels.TheMRsystemoperator
willrecognizesuchafailureasasetofconcentric
semicirclesinthetissueontheassociatedMRimageorasanunusualamountofimage
non‐uniformityrelatedtothepositionoftheRFcoil.
Theadoptionoftheseguidelineswillhelptoensurethatpatientsafetyismaintained,especially
asmoreconductivematerialsandelectronically‐activateddevicesareusedinassociationwith
MRprocedures.
References
BasheinG,SyroryG.Burnsassociatedwithpulseoximetryduringmagneticresonanceimaging.
Anesthesiology1991;75:382‐3.
BrownTR,GoldsteinB,LittleJ.Severeburnsresultingfrommagneticresonanceimagingwith
cardiopulmonarymonitoring.Risksandrelevantsafetyprecautions.AmJPhysMedRehabil
1993;72:166‐7.
ChouC‐K,McDougallJA,ChanKW.Absence
ofradiofrequencyheatingfromauditoryimplants
duringmagneticresonanceimaging.Bioelectromagnetics1997;44:367‐372.
DempseyMF,CondonB.ThermalinjuriesassociatedwithMRI.ClinRadiol2001;56:457‐65.
DempseyMF,CondonB,HadleyDM.Investigationofthefactorsresponsibleforburnsduring
MRI.JMagnResonImaging2001;13:627‐631.
ECRI,HealthDevicesAlert.A
newMRIcomplication?HealthDevicesAlert.May27,pp.1,1988.
ECRI.ThermalinjuriesandpatientmonitoringduringMRIstudies.HealthDevicesAlert.1991;20:
362‐363.