| 摘要 |
In various exemplary embodiments, a targeting device providing a visible indication of an invisible beam is disclosed. The invisible beam, such as an x-ray beam, is emitted by a radiation source on a medical imaging system. The targeting device includes, for example, an illumination source to produce a visible beam and operate at one or more wavelengths. The illumination source, which is opaque to the x-ray beam and would ordinarily cause shadows on the imaging system, is arranged to be mounted outside of a field-of-view of the invisible beam. A beam reflector is mounted next to the illumination source. The beam reflector is fabricated from a material invisible to x-rays and is arranged to be mounted within the field-of-view of the invisible beam. The beam reflector redirects the visible beam produced by the illumination source such that the visible beam is parallel to the field-of-view of the invisible beam.
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