| 摘要 |
A device that automatically aligns laser beams to corresponding targets to establish a frame of reference for radiation oncology or diagnostic imaging. The device is comprised of one or more lasers and corresponding laser alignment targets, two motors for each laser to control its direction, a laser imaging device or devices, a wireline or wireless network, a computer for controlling each laser's motors, and a central computer connected to the laser imaging device(s). Each laser alignment target has crosshairs to align the laser beam to, and each laser alignment target also has unique identifying marks to distinguish it from the other lasers' targets. Each laser has two means for automatic alignment, one to adjust the laser beam positive or negative along X coordinates, and another to adjust the laser beam positive or negative along Y coordinates. The laser imaging device(s) is used to measure how accurately the laser beam is aligned, and the images are fed to the central computer which calculates the laser alignment error for each laser, and sends feedback across the network to each laser's alignment computer. The computer for each laser uses the error feedback to control the laser's automatic alignment means so as to minimize the alignment error.
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