NEMA MS 3:2008 (R2014)

Preamble
Foreword
Rationale
Scope
Section 1 - DEFINITION
  1.1 Measurement Region of Interest (MROI)
  1.2 Measurement Subregion of Interest (SROI)
  1.3 Image Non-uniformity
  1.4 Normalized Absolute Average Deviation
  1.5 Peak Deviation Non-uniformity
  1.6 Gray-Scale Uniformity Map
  1.7 Maximum Selectable Volume
  1.8 Specification Volume
  1.9 Specification Area
Section 2 - METHODS OF MEASUREMENT
  2.1 Test Hardware
      2.1.1 Size of the Signal Producing Volume
      2.1.2 MR Characteristics of the Signal Producing Volume
  2.2 Scan Conditions
  2.3 Measurement Procedure
      2.3.1 Pre-processing of the Image
      2.3.2 Peak Deviation Non-uniformity
      2.3.3 Gray-Scale Uniformity Map
      2.3.4 ACR MR Accreditation Program (ACR-MRAP) Uniformity
      2.3.5 Normalized Absolute Average Deviation Uniformity
Section 3 - SOURCES OF ERROR AND REPORTING OF RESULTS
  3.1 Sources of Error
  3.2 Reporting of Results
      3.2.1 Scan Parameters
Annex A - CHANGES TO STANDARD

Defines a method for measuring image-uniformity performance of diagnostic magnetic resonance imaging systems using single channel volume coils and performing proton imaging. This document does not address the use of surface coils, chemical shift imaging, or spectroscopy.