Skip to main content

Table 2 Friedman test results of pairwise comparison of different methods for measuring the left atrium (LA) diameters on the computed tomography (CT) image

From: Evaluating the consistency in different methods for measuring left atrium diameters

Dimension

Measurement methods

Measurement methods

q value

P value

Name

mean ± SD/ P50 (P25, P75)

Name

mean ± SD/ P50 (P25, P75)

Anteroposterior diameter

MPR④

35.88 ± 6.93

MPR①

43.59 ± 9.21

5.95

< 0.001

  

VR②

45.03 ± 9.34

7.53

< 0.001

  

MPR③b

44.86 ± 9.51

7.67

< 0.001

  

MPR③a

44.85 ± 9.41

8.05

< 0.001

  

VR①

45.51 ± 10.17

8.21

< 0.001

  

MPR②

51.45 ± 9.08

14.14

< 0.001

MPR①

43.59 ± 9.21

VR②

45.03 ± 9.34

1.58

1.000

  

MPR③b

44.86 ± 9.51

-1.72

1.000

  

MPR③a

44.85 ± 9.41

-2.11

0.740

  

VR①

45.51 ± 10.17

2.26

0.496

  

MPR②

51.45 ± 9.08

-8.72

< 0.001

VR②

45.03 ± 9.34

MPR③b

44.86 ± 9.51

-0.14

1.000

  

MPR③a

44.85 ± 9.41

-0.53

1.000

  

VR①

45.51 ± 10.17

0.68

1.000

  

MPR②

51.45 ± 9.08

-7.14

< 0.001

MPR③b

44.86 ± 9.51

MPR③a

44.85 ± 9.41

0.39

1.000

  

VR①

45.51 ± 10.17

0.54

1.000

  

MPR②

51.45 ± 9.08

7.00

< 0.001

MPR③a

44.85 ± 9.41

VR①

45.51 ± 10.17

0.16

1.000

  

MPR②

51.45 ± 9.08

6.62

< 0.001

VR①

45.51 ± 10.17

MPR②

51.45 ± 9.08

-6.46

< 0.001

Long diameter

VR②

63.05 ± 8.65

MPR③a

64.71 ± 8.03

-0.041

1.000

  

MPR②

64.84 ± 10.49

-2.48

0.202

  

MPR③b

66.97 ± 8.99

-3.06

0.033

   

MPR①

66.09 ± 10.80

-3.57

0.005

  

VR①

67.89 ± 7.40

4.24

< 0.001

MPR③a

64.71 ± 8.03

MPR②

64.84 ± 10.49

2.43

0.226

  

MPR③b

66.97 ± 8.99

-3.02

0.038

  

MPR①

66.09 ± 10.80

3.53

0.006

  

VR①

67.89 ± 7.40

4.19

< 0.001

MPR②

64.84 ± 10.49

MPR③b

66.97 ± 8.99

-0.59

1.000

  

MPR①

66.09 ± 10.80

1.09

1.000

  

VR①

67.89 ± 7.40

1.76

1.000

MPR③b

66.97 ± 8.99

MPR①

66.09 ± 10.80

0.51

1.000

  

VR①

67.89 ± 7.40

1.12

1.000

MPR①

66.09 ± 10.80

VR①

67.89 ± 7.40

0.67

1.000

Transverse diameter

VR②

49.30 (45.20, 54.50)

MPR②

50.10 (44.10, 56.70)

-1.67

1.000

  

MPR①

49.30 (46.60, 58.50)

-3.90

0.002*

  

VR①b

55.50 (49.10, 62.30)

5.91

< 0.001*

  

VR①a

54.70 (50.10, 60.00)

6.56

< 0.001*

  

MPR④

58.50 (51.10, 64.90)

-8.49

< 0.001*

Transverse diameter

  

MPR③

77.30 (70.80, 81.90)

-14.99

< 0.001*

MPR②

50.10 (44.10, 56.70)

MPR①

49.30 (46.60, 58.50)

0.026

0.543

  

VR①b

55.50 (49.10, 62.30)

4.25

< 0.001*

  

VR①a

54.70 (50.10, 60.00)

4.90

< 0.001*

  

MPR④

58.50 (51.10, 64.90)

-6.83

< 0.001*

  

MPR③

77.30 (70.80, 81.90)

-13.32

< 0.001*

MPR①

49.30 (46.60, 58.50)

VR①b

55.50 (49.10, 62.30)

2.02

0.916

  

VR①a

54.70 (50.10, 60.00)

2.67

0.161

  

MPR④

58.50 (51.10, 64.90)

-4.60

< 0.001*

  

MPR③

77.30 (70.80, 81.90)

-11.09

< 0.001*

VR①b

55.50 (49.10, 62.30)

VR①a

54.70 (50.10, 60.00)

0.65

1.000

  

MPR④

58.50 (51.10, 64.90)

-2.58

0.208

  

MPR③

77.30 (70.80, 81.90)

-9.07

< 0.001*

VR①a

54.70 (50.10, 60.00)

MPR④

58.50 (51.10, 64.90)

-1.93

1.000

  

MPR③

77.30 (70.80, 81.90)

-8.42

< 0.001*

MPR④

58.50 (51.10, 64.90)

MPR③

77.30 (70.80, 81.90)

6.49

< 0.001*

  1. (Note VR① refers to the measurement on the VR image of an independent LA remodeling; VR② refers to the measurements on the VR image of the cardiac valves pattern; MPR① refers to the measurement at the ultrasonic plane; MPR② refers to the measurement at the apical two-chamber and four-chamber plane; MPR③ refers to the measurement at the orthogonal plane; MPR④ refers to the measurement at the oblique axis plane; MPR③a of the anteroposterior diameter means measurement at the orthogonal axis plane; MPR③b of the anteroposterior diameter refers to the measurement at the orthogonal sagittal plane; MPR③a of the long diameter refers to the measurement at the coronal plane; MPR③b of the long diameter refers to the measurement at the sagittal plane; VR①a of the transverse diameter refers to the distance between the inner and outer lateral walls of LA; VR①b of the transverse diameter suggests that the minimum distance of the extension line between the left and right PV orifices represents the transverse diameter.)
Back to article page

BMC Medical Imaging

ISSN: 1471-2342

Contact us