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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