Anthropomorphic breast phantoms for assessing ultrasonic imaging system performance and for training ultrasonographers: Part II

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Abstract
Three prototype anthropomorphic breast phantoms are discussed. The phantoms were constructed using ultrasonically tissue‐mimicking materials; these materials mimic various tissue parenchymae in terms of attenuation, speed of sound, density, and scatter level. Realistic artifacts related to refraction and reflection at interfaces between different simulated parenchymae are produced. The phantoms represent premenopausal breasts, and they complement one another. Two of them represent the dense breasts of women under 30 years of age, and one represents that of a woman between 35 and 40 years of age. Of the former two, one produces what is apparently above‐average refraction effects in the region of the peripheral fat layer; the other produces more typical refraction effects. Simulated tumors, cysts, and calcifications of various sizes are suspended in the glandular regions. Such phantoms are valuable for use in developmental testing of state‐of‐the‐art ultrasound machines, quality assurance testing of clinical machines, and training of sonographers in breast imaging.

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