Abstract
Sonography of the breast is a rapidly expanding specialty area. It is routinely used in conjunction with mammography. The role of sonography in breast examinations primarily consists of a targeted study focusing on a specific abnormality seen on a mammogram. Sonography is also used to evaluate palpable breast masses, dense breast tissue, and breast implants. Sonographic guidance is often used in interventional procedures such as core needle biopsies, fine needle aspirations, needle wire localizations, and handheld mammotomes. Recently, the role of sonography in breast care has expanded. Breast brachy-therapy (internal radiation therapy) is a type of radiotherapy that can be used in breast conservation therapy (BCT). This article is limited to the role of sonography in BCT breast brachy-therapy. The surgical technique, radiation do-simetry, computed tomography, and mammo-graphic roles are not discussed in detail.