NGHIÊN CỨU GIÁ TRỊ SIÊU ÂM ĐÀN HỒI BÁN ĐỊNH LƯỢNG (SEMI-QUANTITATIVE) TRONG CHẨN ĐOÁN U VÚ

Abstract

Objective: Combined B-mode ultrasound and Strain Elastography Imaging (Semi-quantitative) which calculates the cutoff
value of Strain Elastography in diagnosis of benign /malignant breast tumor.
Method: Patients with breast tumors were combined B-mode breast ultrasound, using the WS80A equipment (Samsung), and
Strain Elastography (Semi-quantitative), followed by Tsukuba-score and Ratio (B/A) (A= tumor lesion, B = fatty tissue above the lesion). From that, evaluated the accuracy, specificity, positive predictive value, accuracy and cut-off values of the Strain Elastography for diagnosis of benign/malignant breast tumors.
Results: 93 women with breast tumors (67 benign tumors, 26 breast cancers), diagnosed by cytology and histopathology. The
average rate of semi-quantitative in malignant and benign tumors compared to fat tissue respectively was (4.73 +/- 2.45) and (1.85 +/- 0.92). The area under the ROC curve is 0.92. The cut-off value was (2.43) has the highest sensitivity (88.5%) and the specificity (82.1%) in the diagnosis of malignant tumors. Positive predictive value (92.8%), accuracy (82.3%).
Conclusion: Using Strain Elastography to measure the elasticity ratio of the breast tumor compared to fat tissue, with a cutoff
values (2.43), with high sensitivity and specificity in diagnosis of benign /malignant breast tumor, which complements the breast Birads categories classification.