Training aids and methods for needle biopsy

The present invention pertains to models and devices used to train manual needle biopsy procedures. In particular, the present invention pertains to manual needle biopsy training methods and systems that use models of the human female breast. Breast cancer is among the most common malignant forms of cancer and is a leading cause of death from cancer among women in the United States. Various methods have evolved for breast examination and detection of early stage cancerous growths. Manual breast examination has been found to be a highly effective method of early breast cancer detection. Tactually accurate breast models have been developed to train the palpation techniques used in effective manual examination. Training success in breast palpation and self-examination is dependent in part on providing a realistic breast model that produces accurate tactile responses in the user. For this reason, breast models have been designed with lifelike texture and tactile properties. A training aid for teaching needle biopsy of the human breast. The inventive methods use breast models having lifelike properties providing accurate tactile sensation during palpation of the breast that enable a trainee to learn to locate modeled internal lesions and similar tissues in the breast. These same properties allow learning of tactile sensations indicating relative position and motion of biopsy needles during biopsy needling procedures. To facilitate tactile learning, the breast model includes an opaque skin that blocks the trainee view of a breast cavity containing modeled lesions, ensuring that needling procedures are performed based solely on "feel". The present invention also includes alternative training methods using a second breast model that is sufficiently transparent to allow viewing of modeled lesions from any relative position. The present invention includes training systems incorporating breast models and viewing stands and methods of training using these aids.