Table 1. Patient selection criteria for EVAR and morphological characteristics of AAA not selected for EVAR
Inclusion clinical criteria
|
Non revascularizable coronary arterial disease
|
Cardiac insufficiency with clinical signs
|
Non-operable aortic stenosis
|
Left ventricular ejection fraction <40%
|
Severe chronic respiratory insufficiency
|
Plasmatic creatinine >200 uL/L
|
Hostile abdomen
|
Exclusion morphological criteria
|
Neck diameter >32mm
|
Neck length<15 mm
|
Circular thrombus or calcifications at stent graftfixation sites
|
Bony sharp neck>=60°
|
Iliac tortuosity>= 80°
|
Table 2. Intra-observer correlation, variation, and absolute differences.
|
ICC
|
Mean difference(mm)
|
Lower agreement limit
|
Upper agreement limit
|
Absolute
difference ≤2mm
|
Absolute difference ≤5mm
|
Standard
deviation
|
D1a min
|
0.982
|
0.348
|
-0.087
|
0.242
|
98.39%
|
100.00%
|
0.551
|
D1a max
|
0.984
|
0.456
|
-0.127
|
0.240
|
96.77%
|
100.00%
|
0.562
|
D1a eff
|
0.979
|
0.495
|
-0.175
|
0.211
|
96.77%
|
100.00%
|
0.574
|
D1b min
|
0.995
|
0.361
|
-0.096
|
0.147
|
100.00%
|
100.00%
|
0.311
|
D1b max
|
0.989
|
0.468
|
-0.026
|
0.342
|
95.16%
|
100.00%
|
0.572
|
D1b eff
|
0.993
|
0.398
|
-0.139
|
0.148
|
100.00%
|
100.00%
|
0.397
|
D1c min
|
0.984
|
0.535
|
-0.109
|
0.303
|
96.77%
|
100.00%
|
0.614
|
D1c max
|
0.980
|
0.692
|
-0.009
|
0.483
|
93.55%
|
100.00%
|
0.712
|
D1c eff
|
0.968
|
0.758
|
-0.254
|
0.338
|
93.55%
|
98.39%
|
0.881
|
D2LP min
|
0.970
|
0.645
|
0.000
|
0.516
|
95.16%
|
100.00%
|
0.823
|
D2LP max
|
0.980
|
0.674
|
-0.051
|
0.393
|
98.39%
|
100.00%
|
0.577
|
D2LP eff
|
0.980
|
0.594
|
-0.017
|
0.404
|
96.77%
|
100.00%
|
0.608
|
D3RP min
|
0.995
|
0.529
|
-0.085
|
0.310
|
98.39%
|
100.00%
|
0.578
|
D3RP max
|
0.994
|
0.663
|
-0.242
|
0.239
|
93.55%
|
100.00%
|
0.673
|
D3RP eff
|
0.997
|
0.547
|
-0.130
|
0.223
|
100.00%
|
100.00%
|
0.425
|
D2LD min
|
0.978
|
0.573
|
-0.378
|
-0.006
|
100.00%
|
100.00%
|
0.491
|
D2LD max
|
0.972
|
0.584
|
-0.251
|
0.200
|
96.77%
|
100.00%
|
0.665
|
D2LD eff
|
0.981
|
0.469
|
-0.165
|
0.181
|
98.39%
|
100.00%
|
0.492
|
D3RD min
|
0.976
|
0.721
|
-0.050
|
0.421
|
96.77%
|
100.00%
|
0.605
|
D3RD max
|
0.980
|
0.705
|
-0.379
|
0.143
|
96.77%
|
100.00%
|
0.753
|
D3RD eff
|
0.976
|
0.640
|
-0.472
|
0.062
|
93.55%
|
98.39%
|
0.856
|
DAAA
|
0.980
|
1.102
|
-0.201
|
1.095
|
91.94%
|
96.77%
|
2.341
|
Lmin
|
0.916
|
0.369
|
-0.091
|
0.167
|
100.00%
|
100.00%
|
0.347
|
Rmin
|
0.953
|
0.372
|
-0.068
|
0.189
|
100.00%
|
100.00%
|
0.347
|
L1
|
0.985
|
1.984
|
-1.317
|
0.940
|
77.42%
|
96.77%
|
3.974
|
L2
|
0.997
|
1.630
|
-0.678
|
0.644
|
77.42%
|
96.77%
|
2.018
|
L3
|
0.996
|
1.642
|
-0.662
|
0.921
|
82.26%
|
100.00%
|
2.644
|
NL
|
0.998
|
1.065
|
-0.102
|
0.668
|
83.87%
|
100.00%
|
1.109
|
Normally distributed continuous data are presented as the mean; categorical data are given as the percentage.
Abbreviations: AAA, abdominal aortic aneurysm; min, smallest diameter; max, largest diameter; eff perimeter-based effect diameters, ICC, intraclass correlation coefficient.
D1a Distal to the lowest renal artery (including minimum, maximum, effective diameter).
D1b 15 mm below the D1a (including minimum, maximum, effective diameter).
D1c Healthy neck end (including minimum, maximum, effective diameter).
D2LP Left proximal primitive iliac artery (including minimum, maximum, effective diameter).
D2LD Left distal primitive iliac artery (including minimum, maximum, effective diameter).
D3RP Right proximal primitive iliac artery (including minimum, maximum, effective diameter).
D3RD Right distal primitive iliac artery (including minimum, maximum, effective diameter).
DAAA Maximum diameter of the AAA.
Lmin Minimum diameter of the left external iliac artery.
Rmin Minimum diameter of the right external iliac artery.
L1 Lowermost renal artery to the aortic bifurcation.
L2 Lowermost renal artery to the right common illiac artery (D1a-D3RD).
L3 Lowermost renal artery to the left common illiac artery (D1a-D2LD).
NL Proximal aortic neck length.
Table 3. Inter-observer correlation, variation, and absolute differences.
|
ICC
|
Mean difference(mm)
|
Lower agreement limit
|
Upper agreement limit
|
Absolute difference ≤2mm
|
Absolute difference ≤5mm
|
Standard deviation
|
D1a min
|
0.987
|
0.365
|
-0.134
|
0.147
|
98.39%
|
100.00%
|
0.414
|
D1a max
|
0.986
|
0.424
|
-0.128
|
0.215
|
98.39%
|
100.00%
|
0.522
|
D1a eff
|
0.979
|
0.579
|
-0.100
|
0.278
|
98.39%
|
100.00%
|
0.470
|
D1b min
|
0.991
|
0.413
|
-0.159
|
0.146
|
100.00%
|
100.00%
|
0.431
|
D1b max
|
0.990
|
0.458
|
-0.232
|
0.129
|
96.77%
|
100.00%
|
0.544
|
D1b eff
|
0.981
|
0.492
|
-0.139
|
0.200
|
98.39%
|
100.00%
|
0.448
|
D1c min
|
0.988
|
0.513
|
-0.229
|
0.133
|
98.39%
|
100.00%
|
0.493
|
D1c max
|
0.984
|
0.585
|
-0.151
|
0.284
|
96.77%
|
100.00%
|
0.624
|
D1c eff
|
0.970
|
0.765
|
-0.282
|
0.295
|
95.16%
|
98.39%
|
0.832
|
D2LP min
|
0.965
|
0.694
|
-0.484
|
0.072
|
95.16%
|
98.39%
|
0.868
|
D2LP max
|
0.978
|
0.671
|
-0.246
|
0.226
|
96.77%
|
100.00%
|
0.638
|
D2LP eff
|
0.980
|
0.587
|
-0.257
|
0.173
|
98.39%
|
100.00%
|
0.606
|
D3RP min
|
0.995
|
0.465
|
-0.117
|
0.278
|
98.39%
|
100.00%
|
0.625
|
D3RP max
|
0.995
|
0.660
|
-0.108
|
0.344
|
96.77%
|
100.00%
|
0.604
|
D3RP eff
|
0.997
|
0.547
|
-0.236
|
0.110
|
100.00%
|
100.00%
|
0.406
|
D2LD min
|
0.977
|
0.521
|
-0.243
|
0.137
|
98.39%
|
100.00%
|
0.534
|
D2LD max
|
0.975
|
0.610
|
-0.107
|
0.320
|
96.77%
|
100.00%
|
0.584
|
D2LD eff
|
0.975
|
0.485
|
-0.193
|
0.197
|
95.16%
|
100.00%
|
0.591
|
D3RD min
|
0.979
|
0.666
|
-0.293
|
0.148
|
96.77%
|
100.00%
|
0.555
|
D3RDmax
|
0.971
|
0.873
|
-0.069
|
0.563
|
90.32%
|
100.00%
|
0.915
|
D3RD eff
|
0.978
|
0.644
|
-0.277
|
0.235
|
98.39%
|
98.39%
|
0.771
|
DAAA
|
0.981
|
1.063
|
-0.657
|
0.608
|
93.55%
|
96.77%
|
2.248
|
Lmin
|
0.886
|
0.468
|
-0.351
|
-0.058
|
100.00%
|
100.00%
|
0.392
|
Rmin
|
0.923
|
0.596
|
-0.577
|
-0.256
|
98.39%
|
100.00%
|
0.463
|
L1
|
0.983
|
1.892
|
-1.901
|
0.251
|
67.74%
|
96.77%
|
3.875
|
L2
|
0.997
|
1.716
|
-0.252
|
1.126
|
75.81%
|
96.77%
|
2.138
|
L3
|
0.996
|
1.582
|
0.009
|
1.562
|
80.65%
|
96.77%
|
2.725
|
NL
|
0.998
|
1.181
|
-0.114
|
0.693
|
82.26%
|
98.39%
|
1.091
|
Normally distributed continuous data are presented as the means; categorical data are given as the percentage.
Abbreviations: AAA, abdominal aortic aneurysm; min, smallest diameter; max, largest diameter; eff perimeter-based effect diameters, ICC, intraclass correlation coefficient.
D1a Distal to the lowest renal artery (including minimum, maximum, effective diameter).
D1b 15 mm below the D1a (including minimum, maximum, effective diameter).
D1c Healthy neck end (including minimum, maximum, effective diameter).
D2LP Left proximal primitive iliac artery (including minimum, maximum, effective diameter).
D2LD Left distal primitive iliac artery (including minimum, maximum, effective diameter).
D3RP Right proximal primitive iliac artery (including minimum, maximum, effective diameter).
D3RD Right distal primitive iliac artery (including minimum, maximum, effective diameter).
DAAA Maximum diameter of the AAA.
Lmin Minimum diameter of the left external iliac artery.
Rmin Minimum diameter of the right external iliac artery.
L1 Lowermost renal artery to the aortic bifurcation .
L2 Lowermost renal artery to the right common illiac artery (D1a-D3RD).
L3 Lowermost renal artery to the left common illiac artery (D1a-D2LD).
NL Proximal aortic neck length.
Table 4. Correlation, variation, and absolute differences between the two methods of measurements (syngo. CT Vascular Analysis /Dongmai).
|
ICC
|
Mean difference(mm)
|
Lower agreement limit
|
Upper agreement limit
|
Absolute difference ≤2mm
|
Absolute difference ≤5mm
|
Standard deviation
|
D1a min
|
0.956
|
0.815
|
0.062
|
0.438
|
93.55%
|
100.00%
|
0.717
|
D1a max
|
0.978
|
0.751
|
0.390
|
0.686
|
94.35%
|
100.00%
|
0.645
|
D1a eff
|
0.976
|
0.743
|
0.374
|
0.663
|
95.97%
|
100.00%
|
0.611
|
D1b min
|
0.967
|
0.902
|
0.065
|
0.499
|
91.13%
|
100.00%
|
0.865
|
D1b max
|
0.983
|
0.942
|
0.579
|
0.902
|
93.55%
|
100.00%
|
0.698
|
D1b eff
|
0.984
|
0.825
|
0.482
|
0.781
|
95.97%
|
100.00%
|
0.649
|
D1c min
|
0.971
|
0.853
|
0.195
|
0.579
|
91.13%
|
100.00%
|
0.766
|
D1c max
|
0.983
|
0.827
|
0.418
|
0.732
|
95.16%
|
100.00%
|
0.654
|
D1c eff
|
0.978
|
0.829
|
0.310
|
0.654
|
91.94%
|
100.00%
|
0.693
|
D2LP min
|
0.955
|
0.813
|
-0.388
|
0.021
|
95.16%
|
99.19%
|
0.832
|
D2LP max
|
0.978
|
0.782
|
0.289
|
0.611
|
95.16%
|
100.00%
|
0.642
|
D2LP eff
|
0.982
|
0.623
|
0.056
|
0.331
|
98.39%
|
100.00%
|
0.498
|
D3RP min
|
0.986
|
0.897
|
-0.186
|
0.295
|
92.74%
|
98.39%
|
1.012
|
D3RP max
|
0.971
|
1.154
|
0.333
|
1.101
|
91.94%
|
96.77%
|
1.958
|
D3RP eff
|
0.980
|
0.909
|
0.105
|
0.710
|
96.77%
|
96.77%
|
1.493
|
D2LD min
|
0.970
|
0.665
|
-0.094
|
0.205
|
99.19%
|
100.00%
|
0.511
|
D2LD max
|
0.976
|
0.676
|
0.184
|
0.474
|
97.58%
|
100.00%
|
0.557
|
D2LD eff
|
0.983
|
0.527
|
0.088
|
0.320
|
100.00%
|
100.00%
|
0.431
|
D3RD min
|
0.975
|
0.783
|
-0.369
|
-0.029
|
98.39%
|
100.00%
|
0.582
|
D3RDmax
|
0.972
|
0.938
|
-0.349
|
0.073
|
91.94%
|
100.00%
|
0.734
|
D3RD eff
|
0.979
|
0.643
|
-0.366
|
-0.036
|
95.97%
|
99.19%
|
0.699
|
DAAA
|
0.987
|
1.159
|
0.247
|
0.961
|
87.90%
|
98.39%
|
1.744
|
Lmin
|
0.841
|
0.506
|
-0.202
|
0.043
|
97.58%
|
100.00%
|
0.473
|
Rmin
|
0.907
|
0.568
|
-0.329
|
-0.062
|
97.58%
|
100.00%
|
0.528
|
L1
|
0.989
|
1.765
|
-0.655
|
0.612
|
75.00%
|
95.97%
|
3.090
|
L2
|
0.993
|
2.843
|
-1.397
|
0.032
|
49.19%
|
86.29%
|
2.911
|
L3
|
0.997
|
2.091
|
-1.767
|
-0.808
|
61.29%
|
93.55%
|
2.129
|
NL
|
0.996
|
1.383
|
-0.825
|
-0.016
|
75.81%
|
95.97%
|
1.853
|
Normally distributed continuous data are presented as the means; categorical data are given as the percentage.
Abbreviations: AAA, abdominal aortic aneurysm; min, smallest diameter; max, largest diameter; eff perimeter-based effect diameters, ICC, intraclass correlation coefficient.
D1a Distal to the lowest renal artery (including minimum, maximum, effective diameter).
D1b 15 mm below the D1a (including minimum, maximum, effective diameter).
D1c Healthy neck end (including minimum, maximum, effective diameter).
D2LP Left proximal primitive iliac artery (including minimum, maximum, effective diameter).
D2LD Left distal primitive iliac artery (including minimum, maximum, effective diameter).
D3RP Right proximal primitive iliac artery (including minimum, maximum, effective diameter).
D3RD Right distal primitive iliac artery (including minimum, maximum, effective diameter).
DAAA Maximum diameter of the AAA.
Lmin Minimum diameter of the left external iliac artery.
Rmin Minimum diameter of the right external iliac artery.
L1 Lowermost renal artery to the aortic bifurcation .
L2 Lowermost renal artery to the right common illiac artery (D1a-D3RD).
L3 Lowermost renal artery to the left common illiac artery (D1a-D2LD).
NL Proximal aortic neck length.
Table 5. The processing time of comparison between Syngo via test and Dongmai test.
|
Syngo. via Test
(min)
|
Dongmai Test (min)
|
|
|
Intra-observer
|
interobserver
|
|
|
Surgeon 1
|
Surgeon 2
|
p
|
Surgeon 1
|
Surgeon 2
|
p
|
Mean Time
|
14.30
|
3.80
|
3.76
|
0.716
|
3.94
|
3.83
|
0.410
|
SD
|
3.08
|
1.06
|
0.89
|
|
0.79
|
0.97
|
|
SD: Standard Deviation.