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Table 1 The results of Ki-67 evaluation grouped according to their range and no of hot-spot fields

From: Content-based analysis of Ki-67 stained meningioma specimens for automatic hot-spot selection

    Ki-67 index  
System: no of artifacts FOV per case No of cases System Expert A Expert B Remarks
0 20 52 10.25 % 8.87 % 9.27 %  
15–16 3 5.84 % 5.58 % 5.61 %  
1 20 16 8.35 % 6.02 % 6.62 % Focal background staining, artifact
8–15 3 4.80 % 3.24 % 3.67 % Artifact
2 20 7 4.14 % 3.02 % 3.17 % Focal background staining, blurred, alterations of the structure, e.g. coagulation
8–13 3 5.72 % 4.89 % 6.91 % Artifact
3 20 10 3.48 % 2.67 % 2.70 % Artifact
12–14 3 3.54 % 1.63 % 1.52 % Artifact
2 20 1 17.19 % 6.12 % 5.83 % Artifact
4 20 1 5.85 % 5.11 % 6.15 % Stained vessels
5 20 2 4.58 % 3.51 % 4.72 % Hemorrhages
6 20 1 6.01 % 4.47 % 4.86 % Stained vessels
9 20 1 10.49 % 5.68 % 5.92 % Focal background staining, alterations of the structure, e.g. coagulation, other artifacts
12 20 1 3.89 % 2.40 % 2.89 % Stained vessels