Koning Breast Computed Tomography Guided Biopsy

Inclusion Criteria: * Female at least 35 years of age of any ethnicity * Lesion seen on mammography * Diagnostic report read as BI-RADS 4 or 5 * Will undergo biopsy no later than four weeks from date of mammogram * Is able to undergo informed consent Exclusion Criteria: * Pregnancy * Lactation * Subjects with breast implants * Subjects with physical limitations that may prohibit resting prone on the exam table, such as, but not limited to: frozen shoulder, recent heart surgery, pacemaker. * Subjects who are unable to tolerate study constraints. * Subjects who have received radiation treatments to the thorax for malignant and nonmalignant conditions, such as (but not limited to) * Treatment for enlarged thymus gland as an infant * Irradiation for benign breast conditions, including breast inflammation after giving birth * Treatment for Hodgkins disease * Subjects who have participated in a prior breast clinical trial that gave additional radiation dose, such as an additional mammogram. * Subjects who have received large numbers of diagnostic x-ray examinations for monitoring of disease such as (but not limited to) * Tuberculosis * Severe scoliosis