Supersonic shear waves quantitative elastography and kinetic magnetic resonance dynamic curve in discriminating BI-RADS 4 breast masses: A comparative study

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• 作者：Ghada A. Elmoneam^a ; ^{ghada12009@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Rania M. Almolla^a ; ^{ranyaalmola@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Ayman F. Ahmed^a ; ^{aym_fathy720@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Mohammad Ahmad Al Ekrashy^b ; ^{Yehiaekrashy_2003@yahoo.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Shear wave elastography ; Contrast enhanced MRI ; BI-RADS4 breast lesions
• 刊名：The Egyptian Journal of Radiology and Nuclear Medicine
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：47
• 期：4
• 页码：1773-1782
• 全文大小：2534 K

文摘

The purpose of this study was to evaluate the usefulness of shear wave elastography (SWE) versus MRI dynamic curve in discriminating BI-RADS 4 breast masses to detect which modality is more sensitive and specific.

Patients and methods

Sixty-three patients presented by breast masses and categorized as BI-RADS 4 by mammography and ultrasound over the study period for 1 year were included. We analyzed and compared the quantitative dynamic MRI curve types with E-maximum (E-Max) shear wave (SW) velocity values.

Results

Histopathological evaluation revealed 41.3% of the cases had benign lesions and 58.7% had a malignant lesion. The mean E-max SW value of each pathology and its corresponding dynamic MRI curve were analyzed.

At a cutoff value 45.3 kPa ± 41.1 for benign lesions and 146.6 kPa ± 40.05 for malignant lesions, the recorded sensitivity, specificity and accuracy of quantitative SWE in differentiating between the benign and malignant BI-RADS 4 breast lesions were 89.5%, 88%, and 88.9%, respectively and those for DC-MRI curve were 100%, 92.3%, and 96.8%, respectively.

Conclusion

Quantitative measurements are more vulnerable in detecting and differentiating BI-RADS 4 lesions. Type of the dynamic MRI curve is more sensitive, specific and accurate than SWE.