Nghiên cứu giá trị siêu âm đàn hồi bán định lượng (SEMI-QUANTITATIVE) trong chẩn đoán u vú

Research Value of Strain Elastography (Semi-quantitative) in Breast Tumor Diagnosis.

SUMMARY

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.

Key words: Strain Elastography (SE), Semi-quantitative, benign /malignant breast tumor, Tsukuba-score , Ratio (B/A).