OBJECTIVES:To evaluate the feasibility of qualitative and quantitative analysis using sonoelastography (SE) for differentiating between benign and malignant superficial soft-tissue lesions. METHODS: For this prospective study, 32 patients with superficial soft-tissue lesions detected with grey-scale ultrasound and colour and/or power Doppler ultrasound were evaluated between October 2011 and December 2012. Qualitative analysis: visual grading system was adopted according to colour variation (red-soft, green-medium, blue-hard). Quantitative analysis: median and fraction area of each colour were computed within a region of interest. Differences between fraction areas and median values in compression and decompression phases were calculated. Reference standard: histological findings. RESULTS: Twelve out of 32 lesions (37.5 %) were malignant. Intraclass correlation coefficient (ICC) was 0.989 (95 % confidence interval [CI] 0.980-0.994, P < 0.01) with optimal reliability. Area under the curve was 0.823 (95 % CI 0.677-0.969) and 0.958 (95 % CI 0.989-1.019) for blue and blue area differences, and 0.777 (95 % CI 0.615-0.939) and 0.629 (95 % CI 0.426-0.833) for red and red area differences, respectively. Blue variations predicted malignancy more accurately (variation ≥0.431: 100 % sensitivity, 80 % specificity); the blue area difference was highly accurate. CONCLUSIONS: Preliminary results showed good correlations between SE and reference standards. SE could be useful in the evaluation of superficial soft tissue lesions.

Magarelli, N., Carducci, C., Bucalo, C., Filograna, L., Rapisarda, S., De Waure, C., Dell'Atti, C., Maccauro, G., Leone, A., Bonomo, L., Sonoelastography for qualitative and quantitative evaluation of superficial soft tissue lesions: a feasibility study, <<EUROPEAN RADIOLOGY>>, 2013; 2013 (Novembre): N/A-N/A. [doi:DOI 10.1007/S00330-013-3069-6] [http://hdl.handle.net/10807/50486]

Sonoelastography for qualitative and quantitative evaluation of superficial soft tissue lesions: a feasibility study

Magarelli, Nicola;Carducci, Chiara;Filograna, Laura;Rapisarda, Santi;De Waure, Chiara;Dell'Atti, Claudia;Maccauro, Giulio;Leone, Antonio;Bonomo, Lorenzo
2013

Abstract

OBJECTIVES:To evaluate the feasibility of qualitative and quantitative analysis using sonoelastography (SE) for differentiating between benign and malignant superficial soft-tissue lesions. METHODS: For this prospective study, 32 patients with superficial soft-tissue lesions detected with grey-scale ultrasound and colour and/or power Doppler ultrasound were evaluated between October 2011 and December 2012. Qualitative analysis: visual grading system was adopted according to colour variation (red-soft, green-medium, blue-hard). Quantitative analysis: median and fraction area of each colour were computed within a region of interest. Differences between fraction areas and median values in compression and decompression phases were calculated. Reference standard: histological findings. RESULTS: Twelve out of 32 lesions (37.5 %) were malignant. Intraclass correlation coefficient (ICC) was 0.989 (95 % confidence interval [CI] 0.980-0.994, P < 0.01) with optimal reliability. Area under the curve was 0.823 (95 % CI 0.677-0.969) and 0.958 (95 % CI 0.989-1.019) for blue and blue area differences, and 0.777 (95 % CI 0.615-0.939) and 0.629 (95 % CI 0.426-0.833) for red and red area differences, respectively. Blue variations predicted malignancy more accurately (variation ≥0.431: 100 % sensitivity, 80 % specificity); the blue area difference was highly accurate. CONCLUSIONS: Preliminary results showed good correlations between SE and reference standards. SE could be useful in the evaluation of superficial soft tissue lesions.
2013
Inglese
Magarelli, N., Carducci, C., Bucalo, C., Filograna, L., Rapisarda, S., De Waure, C., Dell'Atti, C., Maccauro, G., Leone, A., Bonomo, L., Sonoelastography for qualitative and quantitative evaluation of superficial soft tissue lesions: a feasibility study, <<EUROPEAN RADIOLOGY>>, 2013; 2013 (Novembre): N/A-N/A. [doi:DOI 10.1007/S00330-013-3069-6] [http://hdl.handle.net/10807/50486]
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