Microcalcification Detection in Breast Ultrasound - A New Perspective?
نویسندگان
چکیده
The prime task of diagnostic breast ultrasound is the focused rapid assessment of new findings on palpation, particularly in young women with dense mammary tissue. Optimization of the devices for this modality has resulted in high-resolution breast ultrasound which over the last few years has led to marked improvements in image quality, detail recognition and spatial resolution of the sonographic image. Techniques such as Tissue Harmonic Imaging (THI) and Spatial/Frequency Compounding (FC) have made it possible to visualize even the smallest changes in tissue (Thomas A et al. Ultraschall in Med 2007; 28:387-393). The precursors of breast cancer, such as the ductal carcinoma in situ (DCIS), are increasingly moving into the center of attention. DCIS is characterized by attenuation of the echo akin that of fat, primarily horizontal spread and dilated arborescent mammary ducts with changes in gland substrate and architecture. Usually, the typical criteria of malignancy such as posterior acoustic shadowing, spiculation and echogenic halo can not be visualized in these masses (Hille H et al. Ultraschall in Med 2007; 28(3):307-12). Another char ac teristic finding are so-called hyperechoic spots. They may indicate microcalcification as well as detritus and are considered a further criterion of malignancy (Fischert T et al. RöFo 2006;178:1224-1234).
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