求翻译：In lay terms, breast specific gamma imaging is a diagnostic tool used to detect breast cancer. What makes this technology different from current diagnostic methodologies is that rather than taking an image of the anatomy and any anomalies within the breast tissue, it images the activity of anomalies within the breast. Normal cells act a certain way; cancerous cells act a different way. An injectable radio pharmaceutical is used to absorb abnormal cells at a high rate. The abnormal cells then give off gamma rays, which are detected by the camera. An image is made to detect abnormal cell activity.是什么意思？

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