Although mammography is the gold standard for screening for breast cancer, 10 to 15% of lesions are missed, and this is higher with dense breasts. Alternative diagnostic modalities are being developed. One of these, breast specific gamma imaging (BSGI), which is not effected by dense tissue, utilizes the increased metabolic activity of tumors to localize and distinguish benign from malignant processes in the breast. The test can be used for screening and diagnostic purposes
