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  • Cone-beam computed tomography (CBCT) scanning systems designed to obtain breast (mammographic) images. These systems typically consist of: 1) an x-ray subsystem that utilizes a cone beam (i.e., a beam which radiates from the x-ray source in a cone shape) which encompasses a large volume with a single rotation about the patient\'s breast thus applying a relatively low dose of radiation; 2) a flat planar detector rather than a curve-shaped detector mounted on the gantry; 3) image display monitors; 4) a data storage unit; and 5) a computerized subsystem for image processing that is capable of producing high-resolution two- and three-dimensional (3-D) images reconstructed using dedicated software (algorithms). Mammographic CT scanning systems may include a dedicated patient table; some tables include holes for breast placement with the patient in a prone position. CBCT systems are mainly used to assess breast lesions and tumors.
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