A device to distance a breast of a patient between a breast support plate and a compression plate while undergoing a stereotactic biopsy comprises a platform distanced from the breast support plate by a distancing structure connected with the platform when the device is mounted on the breast support plate. The device can be bound to the breast support plate to resist movement of the platform relative to the breast support plate. The platform is formed of a material that permits x-rays to pass through the platform substantially unobstructed such that no artifacts are introduced by the platform during imaging.