A computerized method of classifying at least one suspicious region of interest (ROI) in an ultrasonic attenuation image mapping tissue of a patient. The method comprises receiving an US image of an tissue, identifying a suspicious region of interest (ROI) in the US image, generating an attenuation map of the suspicious ROI, measuring, according to an analysis of the attenuation map, at least one attenuation feature of at least one of the suspicious ROI and at least one sub region in the suspicious ROI, and classifying the suspicious ROI according to the at least one attenuation feature.一種對在繪製一患者之組織的一超音波衰減影像中之至少一可疑關注區域(ROI)分類之電腦化方法。該方法包含：接收一組織之一超音波(US)影像；識別該US影像中之一可疑關注區域(ROI)；產生該可疑ROI之一衰減圖；根據該衰減圖之一分析，量測該可疑ROI及該可疑ROI中之至少一子區域中的至少一者之至少一衰減特徵；及根據該至少一衰減特徵對該可疑ROI分類。
