Method and apparatus for acquiring a uniform distribution of rad

Details Method and apparatus for acquiring a uniform distribution of rad Method and apparatus for acquiring a uniform distribution of rad

1991-07-29

1994-11-15

Dzierzynski, Paul M.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 378 14, 36441315, 36441316, G01N 23083

Patent

active

053655605

ABSTRACT:
A method and apparatus for acquiring scanning cone beam projection data along a three dimensional scanning trajectory is disclosed. The technique ensures acquisition of a substantially uniform distribution of Radon data that is sufficiently complete for exact image reconstruction of an object irradiated by a scanning cone beam source. By choosing a scanning trajectory whose planar projection onto a plurality of coaxial planes, when taken together, forms a continuous, convex, closed curve about a corresponding projection of the object being scanned; the Radon information obtained therefrom is complete and information coverage is uniform over the region of support of the object. Accordingly, this condition provides a practical, easy to implement, visual method for evaluating candidate three dimensional scanning trajectories.

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