Automatic Detection and Quantification of Acute Cerebral Infarct by Fuzzy Clustering and Histographic Characterization on Diffusion Weighted MR Imaging and Apparent Diffusion Coefficient Map
Table 1
Demographics and the statistics of the computer-assisted cerebral infarct segmentation results of individual patients after repeating the proposed method for 10 times.
Patient
Sex
Age
Demar.
Total infarct volume (mL)
Vol.
SI (%)
Kappa (%)
Sen. (%)
Spe. (%)
PPV (%)
NPV (%)
Semi-auto.
Auto.
1
M
73
0.27
0.155
0.212
36.6%
84.661
84.661
100.000
99.999
73.529
100.000
2
M
80
0.19
0.358
0.377
5.3%
97.438
97.438
100.000
100.000
95.014
100.000
3
F
69
0.21
0.399
0.381
−4.4%
97.716
97.716
95.556
100.000
100.000
100.000
4
F
84
0.22
0.474
0.378
−20.3%
86.835
86.834
78.037
100.000
98.349
99.998
5
F
70
0.2
0.501
0.337
−32.7%
91.662
91.662
93.398
100.000
91.723
100.000
6
M
63
0.19
0.545
0.451
−17.2%
90.413
90.412
82.764
100.000
100.000
99.999
7
M
55
0.2
0.612
0.471
−22.9%
82.684
82.683
73.190
100.000
95.072
99.998
8
F
66
0.15
0.644
0.479
−25.6%
85.332
85.331
74.436
100.000
100.000
99.998
9
M
61
0.21
0.796
0.895
12.5%
94.143
94.142
100.000
99.999
88.938
100.000
10
M
64
0.19
1.003
1.019
1.6%
98.927
98.927
99.710
100.000
98.171
100.000
11
F
75
0.25
1.675
1.794
7.1%
94.373
94.372
97.619
99.998
91.568
99.999
12
F
56
0.19
1.966
1.497
−23.9%
86.438
86.434
76.140
100.000
100.000
99.992
13
F
74
0.31
2.141
3.232
51.0%
79.722
79.715
100.000
99.984
66.312
100.000
14
F
86
0.14
3.749
2.228
−40.6%
74.359
74.349
59.444
100.000
100.000
99.977
15
M
76
0.19
4.143
3.448
−16.8%
85.827
85.819
78.898
99.997
95.789
99.987
16
F
87
0.17
10.108
8.351
−17.4%
90.453
90.440
82.621
100.000
100.000
99.975
17
F
83
0.16
12.657
10.088
−20.3%
88.603
88.582
79.662
100.000
99.952
99.958
18
F
57
0.19
13.063
13.492
3.3%
97.656
97.652
99.254
99.992
96.124
99.999
19
M
72
0.19
15.014
11.611
−22.7%
87.181
87.159
77.332
100.000
99.992
99.955
20
M
80
0.24
46.828
54.497
16.4%
92.426
92.374
99.990
99.894
85.933
100.000
21
M
74
0.22
56.517
59.147
4.7%
97.526
97.503
99.793
99.956
95.365
99.998
22
M
91
0.1
482.939
429.534
−11.1%
94.147
93.675
88.942
100.000
100.000
99.056
Mean
72.5
0.20
−6.2%
89.933
89.904
88.036
99.992
94.174
99.949
STDEV
10.4
0.04
22.3%
6.460
6.446
12.117
0.024
8.886
0.200
Note: Demar.: the lowest intensity, above , of the infarcts demarcated by the neurologist; SI: similarity index; Sen.: sensitivity; Spe.: specificity; PPV: positive predictive value; NPV: negative predictive value; STDEV: standard deviation;
