Means for localizing target coordinates in a body relative to a guidance system reference frame in any arbitrary plane as viewed by a tomographic image through the body
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United States of America Patent
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Oct 21, 1986
Grant Date -
N/A
app pub date -
Oct 21, 1983
filing date -
Oct 21, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A localizer system is described which enables determination of the coordinates of a target located inside the human body and visualized on a tomographic scan image for essentially any arbitrary scan plane through the body. It involves a means of fixing a frame in a known relationship to the body and placing the localizer system in a fixed position relative to the frame. There is an axial axis defined for the localizer, and there are both parallel and transverse (perpendicular) rod elements as well as diagonal rod elements on the localizer. These appear as spot images on the scan plane image and are sufficient in number and location to enable accurate calculation of a target image on the scan and determination of the target coordinates in space relative to the localizer. This applies to plane scan cuts which are substantially parallel or perpendicular to the localizer axis.
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