Biomedical Engineering Reference
In-Depth Information
Table 2.
Classification of Breast Tumors by SVM with the
Proposed Features (
C
d
,
M
d
,
A
d
, and
S
o
) for the Noncon-
tinuous and Continuous Strain Imaging Methods
Benign*
Malignant*
Classification
Non-cont.
Cont.
Non-cont.
Cont.
Benign
TN 50
TN 53
FN 10
FN 6
Malignant
FP 10
FP 7
TP 30
TP 34
Total
60
40
Note:
Noncont. = noncontinuous strain imaging;
Cont. = continuous strain imaging;
TP = true positive; TN: true negative;
FP = false positive;
FN = false negative.
An asterisk denotes a histological finding.
Table 3.
Result of Performance Items for Non-
continuous and Continuous Strain Imaging
Methods Based on the Proposed Features
Performance
Items
Noncont.
Cont.
Accuracy
80.00%
87.00%
Sensitivity
75.00%
85.00%
Specificity
83.33%
88.33%
PPV
75.00%
82.93%
NPV
83.33%
89.83%
Note: Noncont. = noncontinuous strain imaging
Cont. = continuous strain imaging
Accuracy = (TP + TN)/(TP + TN + FP + FN)
sensitivity = TP/(TP + FN)
specificity = TN/(TN + FP)
PPV = TP/(TP + FP)
NPV = TN/(TN + FN)
