Laser measuring apparatus and method for radiosurgery/stereotactic radiotherapy alignment
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United States of America Patent
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Jan 4, 2000
Issued Date -
N/A
app pub date -
Nov 3, 1998
filing date -
Jun 6, 1995
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Abstract
An apparatus and method for aligning a radiosurgery/stereotactic radiotherapy system. The system includes a linear accelerator, including a gantry and a collimator, a couch, and a stereotactic reference system mounted on the couch. The apparatus includes a laser measuring device mounted on the gantry, the laser measuring device having a laser generator element for generating a laser light beam and a laser displacement sensor. The apparatus also includes a reference fixture, attached to the stereotactic reference system, having at least one reflective surface for reflecting the laser light beam to the laser displacement sensor, upon which the laser displacement sensor measures the distance between the reflective surface and the laser measuring device.
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