Apparatus for providing markers on an image, for use in conjunct

Details Apparatus for providing markers on an image, for use in conjunct Apparatus for providing markers on an image, for use in conjunct

1997-12-31

2000-03-28

Porta, David P.

X-ray or gamma ray systems or devices

Auxiliary data acquisition or recording

Distance or dimension marker

378207, A61B 604

Patent

active

060441321

ABSTRACT:
Apparatus for providing markers on an image, for use in conjunction with C-arm calibration apparatus for 3D reconstruction in an imaging system, comprises a plurality of radiation transparent planes intersecting at a line; and radiation opaque markers disposed on said transparent planes and arranged in respective patterns such that detection of coplanar markers on an image is possible without ambiguity even though said patterns be superimposed on a radiographic images.

REFERENCES:
patent: 4618978 (1986-10-01), Cosman
patent: 5442674 (1995-08-01), Picard et al.
patent: 5706324 (1998-01-01), Wiesent et al.

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