an implement consisting of a broad blade or scoop attached to a long handle, used for taking up, removing, or throwing loose matter, as earth, snow, or coal. 2. any fairly large contrivance or machine with a broad blade or scoop for taking up or removing loose matter: a steam shovel. 3. a shovelful.
Cone beam computed tomography. Cone beam computed tomography. MeSH. Cone beam computed tomography (or CBCT, also referred to as C-arm CT, cone beam volume CT, or flat panel CT) is a medical imaging technique consisting of X-ray computed tomography where the X-rays are divergent, forming a cone.
Cones. A cone is a solid with a circular base. It has a curved surface which tapers (i.e. decreases in size) to a vertex at the top. The height of the cone is the perpendicular distance from the base to the vertex. A right cone is a cone in which the vertex is vertically above the center of the base. When the vertex of a cone is not vertically above the center of the base, it is called an oblique cone. The following diagrams show a right cone and an oblique cone. In common usage, cones are assumed to be right and circular.