System for determining target positions in the body observed in

Details System for determining target positions in the body observed in System for determining target positions in the body observed in

1997-11-12

2000-09-19

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 63, 378205, A61D 608

Patent

active

061223417

ABSTRACT:
This invention relates to the quantitative determination of a target or volume in the living body relative to external apparatus based on CT (computer tomography) or other image data. The invention describes a means of taking CT image data of the anatomy and of natural or implanted index positions on the patient's body, and relating the CT data to a coordinate system related to external apparatus which may be in fixed position relative to the patient. One implementation uses a transformation between the CT image data coordinate system and the second coordinate system. This makes it possible to do frame-based or frameless stereotactic target identification and approaches without the need for attaching a frame to the patient at the time of CT scanning.

REFERENCES:
patent: 4319136 (1982-03-01), Jinkins
patent: 4341220 (1982-07-01), Perry
patent: 4991579 (1991-02-01), Allen
patent: 5052035 (1991-09-01), Krupnick

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