Method for relating the data of an image space to physical space
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United States of America Patent
Stats
-
Sep 3, 1996
Issued Date -
N/A
app pub date -
Jun 2, 1995
filing date -
Feb 12, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for determining the location of the center of the imageable portion of a fiducial marker is disclosed. The method includes the use of a detachable cap. The lower portion of the cap has three arms and a boss for providing a detachable connection with an implanted base portion to which an imaging marker can be attached. The upper portion of the cap includes a divot--like depression that is configured to mate with a ball whose center can be determined. The ball, marker, and divot are configured so that the center of the ball, when mated to the divot, is coincident with the center of the marker when it is attached to the base in place of the cap. Knowledge of the location of the center of the ball when it is brought into engagement with the divot of the cap can be used to determine the location of the center of the marker when it is attached to the base.
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