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Table 2 Mean infarct size by quantification method

From: Sources of variability in quantification of cardiovascular magnetic resonance infarct size - reproducibility among three core laboratories

Method   Overall Mean Core Lab 1 Core Lab 2 Core Lab 3
AUTOSegment % LV 18.5 ± 9.5 17.8 ± 8.1 18.9 ± 10.8 18.7 ± 10.3
AUTO-UCSegment % LV 20.2 ± 10.2 20.6 ± 10.4 20.0 ± 10.2 20.0 ± 10.5
AUTOFWHM % LV 18.8 ± 10.3 18.9 ± 9.8 19.9 ± 11.7 17.6 ± 10.1
AUTO-UCFWHM % LV 20.6 ± 11.4 20.5 ± 11.0 20.5 ± 12.4 20.7 ± 11.4
MANUAL % LV 27.2 ± 13.0 30.6 ± 14.7 26.8 ± 12.9 24.1 ± 12.3
MANUAL-ISI % LV 19.3 ± 11.0 19.8 ± 10.9 19.7 ± 11.6 18.4 ± 11.1
VISUAL % LV 20.4 ± 8.0 18.6 ± 7.4 21.0 ± 8.7 21.5 ± 8.8
VISUAL-ISI % LV 16.8 ± 7.4 16.3 ± 7.1 17.8 ± 7.9 16.4 ± 7.8
AUTOSegment gram 32.8 ± 22.1 32.4 ± 19.1 35.8 ± 28.1 30.1 ± 20.4
AUTO-UCSegment gram 35.6 ± 24.3 37.2 ± 24.2 37.3 ± 27.9 32.1 ± 22.0
AUTOFWHM gram 33.1 ± 24.8 34.0 ± 24.5 37.2 ± 32.0 28.0 ± 20.3
AUTO-UCFWHM gram 35.6 ± 26.9 36.1 ± 24.8 38.3 ± 34.2 32.3 ± 23.2
MANUAL gram 49.9 ± 30.6 54.4 ± 36.0 47.1 ± 29.8 42.3 ± 27.5
MANUAL-ISI gram 34.1 ± 25.6 35.7 ± 24.0 37.1 ± 31.3 29.5 ± 22.7
  1. Values ± standard deviation
  2. AUTOSegment = automated infarct quantification without user correction (Segment)
  3. AUTO-UCSegment = automated infarct quantification with user correction (Segment)
  4. AUTOFWHM = automated infarct quantification without user correction (FWHM)
  5. AUTO-UCFWHM = automated infarct quantification with user correction (FWHM)
  6. MANUAL = manual planimetry including the entire area of hyperenhanced myocardium (all bright and grey regions)
  7. MANUAL-ISI = manual planimetry with adjustment for regions with intermediate signal intensity (all bright and half of grey regions included)
  8. VISUAL = visual scoring of the extent of hyperenhancement (both bright and grey regions are considered hyperenhanced). Data are available only for infarct size as %LV
  9. VISUAL-ISI = visual scoring of the extent of hyperenhancement weighted by the degree of hyperenhancement. Data are available only for infarct size as %LV