A stabilization device includes a base, a column, and a table support structure, wherein the column is disposed within the base and is movable within the base along a vertical axis. The table support structure is connected to the column and comprises a substantially planar top surface. The stabilization device may be positioned under an extension of a patient support table and adjusted along the vertical axis so that a substantially planar top surface of the table support structure is disposed flush against a substantially planar bottom surface of the extension.