To research the influence factors of false positive results and false negative re
sults of S-Detect in breast lesions diagnosis.
Methods:
697 breast lesions of 613 patients in the First Affiliated Hospital of Nanjing Medical University from May 2019 to March 2022 were retrospectively analyzed. They all underwent preoperative breast ultrasound
S-Detect examination data and surgery for postoperative pathology. According to postoperative pathological
the diagnostic efficacy of S-Detect was evaluated. The age of patients
size
shape
margin
orientation
calcification
posterior feature and vascularity of lesions were included in the analysis. The t test and Mann-Whitney
U
rank sum test were used to compare the continuous variable of false negative and true negative group
false positive and true positive group. The
2
test and Fisher exact test were used to compare the classified variable. The logistic regression was used to analysis the significant risk factors.
Results:
The mean age of the patients was (47.113.6) years. Among the 697 lesions
350 were benign and 347 were malignant. The area under curve (AUC) of S-Detect was 0.835 and Kappa value was 0.670. Age 45 and over (OR=2.898
P
=0.002)
margin not circumscribed (OR=4.778
P
<0.001)
vascularity of 2 or 3 grade (OR=2.447
P
=0.009) were significantly correlated with false negative results. The false positive results weresignificantly associated with age under 45 (OR=9.735
P
<0.001)
the maximum diameter less than 20 mm (OR=2.480
P
=0.015)
shape regular (OR=4.097
P
=0.003)
margin circumscribed (OR=8.175
P
<0.001) and vascularity of 0 or 1 grade (OR=3.351
P
=0.001).
Conclusion:
Among benign lesions diagnosed by S-Detect
the patients with older age
the lesions with not circumscribed margin and higher grade of vascularity are likely in the false negative group. In the malignant lesions diagnosed by S-Detect
the patients in the false positive group were younger in age
smaller i
n size
regular in shape
circumscribed in margin and lower grade of vascularity.