Background
Data and methods
Participants
Inclusion and exclusion criteria
CT examination method
Image processing methods
Image processing time recording method
Image processing
Statistical processing
Results
Baseline data
Consistency evaluation of LA diameter measurement by two physicians
Parameters | Measurement 1 by physician 1 | Measurement 2 by physician 1 | Measurement by physician 2 | Consistency of two measurements by physician 1 | physician 1-physician 2 Consistency | Consistency of 3 measurements | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ICC value | F value | P value | ICC value | F value | P value | ICC value | F value | P value | |||||
Anteroposterior diameter | |||||||||||||
VR① | 46.34 ± 10.66 | 45.51 ± 10.17 | 45.86 ± 10.24 | 0.94(0.90 ~ 0.96) | 29.72 | < 0.001 | 0.95(0.92 ~ 0.97) | 38.52 | < 0.001 | 0.95(0.93 ~ 0.97) | 59.77 | < 0.001 | |
VR② | 44.30 ± 8.62 | 45.03 ± 9.34 | 44.47 ± 8.32 | 0.83(0.75 ~ 0.88) | 10.57 | < 0.001 | 0.84(0.76 ~ 0.89) | 11.32 | < 0.001 | 0.86(0.81 ~ 0.90) | 19.33 | < 0.001 | |
MPR① | 44.39 ± 9.00 | 43.59 ± 9.21 | 44.12 ± 8.25 | 0.90(0.85 ~ 0.94) | 19.49 | < 0.001 | 0.90(0.86 ~ 0.94) | 19.86 | < 0.001 | 0.92(0.89 ~ 0.94) | 35.13 | < 0.001 | |
MPR② | 53.24 ± 9.26 | 51.45 ± 9.08 | 54.19 ± 9.58 | 0.75(0.64 ~ 0.83) | 7.03 | < 0.001 | 0.81(0.72 ~ 0.87) | 9.26 | < 0.001 | 0.82(0.76 ~ 0.87) | 14.71 | < 0.001 | |
MPR③a | 44.56 ± 9.20 | 44.85 ± 9.41 | 45.00 ± 9.78 | 0.98(0.96 ~ 0.98) | 79.12 | < 0.001 | 0.97(0.96 ~ 0.98) | 62.72 | < 0.001 | 0.97(0.96 ~ 0.98) | 115.29 | < 0.001 | |
MPR③b | 44.50 ± 9.26 | 44.86 ± 9.51 | 45.00 ± 9.42 | 0.96(0.94 ~ 0.98) | 52.64 | < 0.001 | 0.97(0.95 ~ 0.98) | 60.52 | < 0.001 | 0.97(0.96 ~ 0.98) | 95.83 | < 0.001 | |
MPR④ | 35.75 ± 7.91 | 35.88 ± 6.93 | 35.19 ± 7.08 | 0.78(0.68 ~ 0.85) | 8.06 | < 0.001 | 0.80(0.71 ~ 0.87) | 9.08 | < 0.001 | 0.81(0.75 ~ 0.87) | 13.98 | < 0.001 | |
Long diameter | |||||||||||||
VR① | 66.38 ± 7.50 | 67.89 ± 7.40 | 66.93 ± 7.48 | 0.93(0.89 ~ 0.95) | 27.04 | < 0.001 | 0.92(0.88 ~ 0.95) | 24.50 | < 0.001 | 0.93(0.91 ~ 0.95) | 42.91 | < 0.001 | |
VR② | 62.99 ± 9.56 | 63.05 ± 8.65 | 64.09 ± 8.80 | 0.77(0.66 ~ 0.84) | 7.51 | < 0.001 | 0.78(0.68 ~ 0.85) | 7.98 | < 0.001 | 0.81(0.74 ~ 0.86) | 13.52 | < 0.001 | |
MPR① | 64.33 ± 10.64 | 66.09 ± 10.80 | 64.43 ± 10.45 | 0.83(0.76 ~ 0.89) | 11.01 | < 0.001 | 0.76(0.65 ~ 0.83) | 7.17 | < 0.001 | 0.82(0.75 ~ 0.87) | 14.28 | < 0.001 | |
MPR② | 64.78 ± 11.47 | 64.84 ± 10.49 | 64.90 ± 11.25 | 0.91(0.87 ~ 0.94) | 21.67 | < 0.001 | 0.92(0.89 ~ 0.95) | 25.13 | < 0.001 | 0.93(0.91 ~ 0.95) | 43.28 | < 0.001 | |
MPR③a | 63.30 ± 8.21 | 64.71 ± 8.03 | 64.86 ± 7.87 | 0.87(0.81 ~ 0.91) | 14.30 | < 0.001 | 0.88(0.82 ~ 0.92) | 15.83 | < 0.001 | 0.94(0.91 ~ 0.96) | 47.97 | < 0.001 | |
MPR③b | 67.77 ± 9.82 | 66.97 ± 8.99 | 69.80 ± 9.32 | 0.89(0.84 ~ 0.93) | 17.82 | < 0.001 | 0.87(0.80 ~ 0.91) | 13.83 | < 0.001 | 0.89(0.85 ~ 0.93) | 26.27 | < 0.001 | |
Transverse diameter | |||||||||||||
VR①a | 54.70(48.90,58.00) | 54.70(50.10,60.00) | 54.00(48.70,58.30) | 0.93(0.90 ~ 0.96) | 28.37 | < 0.001 | 0.94(0.92 ~ 0.96) | 34.96 | < 0.001 | 0.94(0.92 ~ 0.96) | 49.04 | < 0.001 | |
VR①b | 57.00(50.50,62.10) | 55.50(49.10,62.30) | 54.00(48.80,60.00) | 0.94(0.92 ~ 0.96) | 34.98 | < 0.001 | 0.86(0.79 ~ 0.90) | 12.77 | < 0.001 | 0.90(0.86 ~ 0.93) | 27.04 | < 0.001 | |
VR② | 50.20(44.40,56.20) | 49.30(45.20,54.50) | 50.90(46.60,57.20) | 0.84(0.77 ~ 0.90) | 11.76 | < 0.001 | 0.82(0.74 ~ 0.88) | 9.94 | < 0.001 | 0.86(0.81 ~ 0.90) | 19.22 | < 0.001 | |
MPR① | 52.88 ± 9.34 | 52.75 ± 8.33 | 52.52 ± 8.09 | 0.87(0.81 ~ 0.92) | 14.43 | < 0.001 | 0.81(0.72 ~ 0.84) | 9.33 | < 0.001 | 0.84(0.78 ~ 0.88) | 16.38 | < 0.001 | |
MPR② | 50.00 ± 9.59 | 50.50 ± 9.18 | 50.94 ± 8.82 | 0.94(0.90 ~ 0.96) | 29.93 | < 0.001 | 0.93(0.90 ~ 0.95) | 27.663 | < 0.001 | 0.94(0.92 ~ 0.96) | 48.77 | < 0.001 | |
MPR③ | 78.00(72.10,83.80) | 77.30(70.80,81.90) | 79.20(73.70,85.00) | 0.92(0.88 ~ 0.95) | 24.84 | < 0.001 | 0.94(0.92 ~ 0.96) | 34.51 | < 0.001 | 0.94(0.91 ~ 0.96) | 45.18 | < 0.001 | |
MPR④ | 57.10(51.70,64.60) | 58.50(51.10,64.90) | 58.10(52.00,64.80) | 0.94(0.91 ~ 0.96) | 33.38 | < 0.001 | 0.94(0.91 ~ 0.96) | 34.172 | < 0.001 | 0.95(0.93 ~ 0.96) | 55.34 | < 0.001 |
Homogeneity of variance analysis of LA diameter measurement by different methods
Difference in LA diameter measurement by different methods
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* |
Difference in time consumed by different methods for LA diameter measurement
Anteroposterior diameter | Subsets | Long diameter | Subsets | Transverse diameter | Subsets | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 1 | 2 | ||||||||||
MPR④ | 1.56 | VR② | 2.87 | VR② | 2.06 | |||||||||
MPR① | 3.51 | MPR③a | 2.88 | MPR② | 2.60 | |||||||||
VR② | 4.03 | MPR② | 3.57 | 3.57 | MPR① | 3.33 | ||||||||
MPR③a | 4.07 | MPR③b | 3.74 | VR①b | 3.99 | |||||||||
MPR③b | 4.20 | MPR① | 3.88 | VR①a | 4.21 | |||||||||
VR① | 4.25 | VR① | 4.07 | MPR④ | 4.84 | |||||||||
MPR② | 6.37 | MPR③ | 6.97 | |||||||||||
q value | 9.48 | q value | 5.59 | 2.70 | q value | 0.74 | ||||||||
P value | 0.070 | P value | 0.118 | 0.581 | P value | 0.824 |