NEMA MS 1:2008

NEMA MS 1:2008 Determination Of Signal-to-noise Ratio (snr) In Diagnostic Magnetic Resonance Imaging Defines methods for measuring the signal-to-noise ratio of magnetic resonance images obtained under a specific set of conditions, and using single-channel volume receiver coils.

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Table of Contents

Preamble
Foreword
Rationale
Scope
Section1-DEFINITIONS
1.1SpecificationVolume
1.2SpecificationArea
1.3MeasurementRegionofInterest(MROI)
1.4ImageSignal
1.5ImageNoise
1.6ImageSignal-to-NoiseRatio
1.7ImageArtifact
1.8VoxelDimensions
1.9RealImage
1.10MagnitudeImage
Section2-METHODSOFMEASUREMENT
2.1TestHardware
2.1.1SizeoftheSignalProducingVolume
2.1.2RFCoilLoadingCharacteristics
2.1.3MRCharacteristicsoftheSignalProducingVolume
2.2ScanConditions
2.3MeasurementProcedure
2.3.1ImageSignalDetermination
2.3.2ProcedurestoEvaluateImageNoise
2.3.3ProceduretoDetermineSNR
Section3-RESULTS
3.1ReportingofResults
3.1.1GeometricandPhantomInformation
3.1.2DataAcquisitionParameters
3.1.3SNRResults
3.1.4ReconstructionParameters
3.1.5AdditionalData
3.1.6RepeatabilityData
3.1.7SourcesofError
Appendices
AAnAlternativeMeasureofNoiseStandardDeviation
BChangestoStandard

Abstract

Defines methods for measuring the signal-to-noise ratio of magnetic resonance images obtained under a specific set of conditions, and using single-channel volume receiver coils.

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