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- Title
Avaliação de parâmetros morfométricos calculados a partir do contorno de lesões de mama em ultrassonografias na distinção das categorias do sistema BI-RADS.
- Authors
Calas, Maria Julia Gregorio; Alvarenga, Andre Victor; Gutfilen, Bianca; de Albuquerque Pereira, Wagner Coelho
- Abstract
To assess the performance of morphometric parameters calculated from breast lesion contours at ultrasonography, in the quantification of morphological features and in the distinction among BI-RADS categories 2, 3, 4 and 5. Materials and Methods: The present casuistry included 40 cases, with orthogonal imaging of patients submitted to surgery. Based on the lesions segmentation, the following five morphometric parameters were calculated: area ratio, overlap ratio, normalized residual value, circularity and depth-to-width ratio. Linear discriminant analysis was applied to select the best parameters, and ROC curve was utilized as figure of merit. Results: Overlap ratio was able to statistically distinguish breast lesions classified as BI-RADS 3 from others classified as BI-RADS 4 (α = 5%; p = 0.015). Additionally, such parameter presented the best performance in the differentiation between malignant and benign breast lesions. Conclusion: These results indicate that morphometric analysis of breast lesions at ultrasonography seems to be helpful in distinguishing patients who should undergo biopsy from those to be followed-up only with imaging methods.
- Subjects
PRECANCEROUS conditions; ULTRASONIC imaging; MELANOMA; FUNGATING wounds; BIOPSY
- Publication
Radiologia Brasileira, 2011, Vol 44, Issue 5, p289
- ISSN
0100-3984
- Publication type
Article
- DOI
10.1590/S0100-39842011000500006