This Breast Biopsy Phantom simulates the look and feel of a human breast. The ultrasonic appearance of the Model 429 is similar to soft tissue to allow the use of normal scanner control settings. Embedded in the phantom are 11 test objects on three different levels, allowing you to practice identification, aspiration and biopsy procedures on cysts, high density and low density lesions. There are three fluid-filled cysts, four high density lesions and four low density lesions. The materials in the solid lesions are colored to differentiate them from surrounding tissue. This provides the user with immediate feedback on the success of the core biopsy. With this variety and number of lesions, most users become proficient in ultrasound-guided needle biopsies in a single training session. The same eye and hand coordination skills required to perform ultrasound-guided biopsies of other body organs can be learned using this phantom.