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Table 21 Normal left atrial and right atrial volume in girls; LMS parameters to calculate z-scores and percentiles relative to age according to reference [47]

From: Reference ranges (“normal values”) for cardiovascular magnetic resonance (CMR) in adults and children: 2020 update

Agea

Left atrium

Right atrium

LMS-parameters

Percentiles (ml/m2)

LMS-parameters

Percentiles (ml/m2)

L

M

S

P3

P50

P97

L

M

S

P3

P50

P97

4

− 1.100

37.566

0.248

22

34

44

0.889

47.196

0.328

18

47

79

5

− 0.956

38.333

0.242

23

36

46

0.774

47.386

0.318

20

47

80

6

− 0.717

39.568

0.234

25

39

50

0.587

47.733

0.302

23

48

80

7

− 0.478

40.739

0.225

26

41

53

0.421

48.181

0.284

25

48

80

8

− 0.239

41.934

0.217

28

43

55

0.266

48.837

0.265

28

49

80

9

0.000

43.072

0.208

28

44

56

0.106

49.868

0.244

30

50

80

10

0.239

43.953

0.199

28

44

56

-0.033

51.098

0.221

33

51

80

11

0.478

44.548

0.191

29

44

57

-0.071

52.283

0.197

35

52

78

12

0.717

45.080

0.182

29

45

58

0.029

53.388

0.175

38

53

76

13

0.956

45.636

0.173

30

45

59

0.262

54.329

0.157

39

54

73

14

1.195

46.118

0.165

30

46

60

0.595

55.205

0.147

40

55

72

15

1.434

46.070

0.156

30

47

60

0.991

55.815

0.145

40

56

72

16

1.673

45.343

0.148

30

46

59

1.419

56.153

0.148

38

56

72

17

1.912

44.258

0.139

29

44

57

1.852

56.470

0.155

36

56

72

18

2.151

43.116

0.130

28

42

55

2.276

57.000

0.164

31

57

73

  1. LMS, L = Lambda (skewness of the distribution), M = Mu (median), S = Sigma (variance)
  2. Standard deviation score (SDS) = [(X/M)L – 1] / (L*S), where X is the measured atrial volume in ml/m2 and L, M and S are the values interpolated for the child’s age; lower and upper limits correspond to a score of -2 and 2 and to the 3rd and 97th percentile, respectively
  3. aAge in years
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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