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Gantry driving units designed for direct coupling a gantry and/or patient table of a radiographic, imaging, or radiotherapy unit which is capable of movements only in one axis (i.e., single axis) to the driving motors used to move the gantry. These devices usually consist of a mechanism that couples the driving motors to the gantry; the mechanism typically includes integral electronic controls to regulate the speed and direction of the movement of the gantry following one axis. Single-axis direct coupling driving units are intended to improve the characteristics of the gantry system (e.g., by permitting faster acceleration/deceleration and increasing the speed of operation). Dedicated driving units for single-axis movements at various speeds and/or resolutions are available.
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