Method and apparatus for piece-wise radiographic scanning

X-ray or gamma ray systems or devices – Beam control – Scanner

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378 62, 378196, G21K 510

Patent

active

053053680

ABSTRACT:
A scanning radiographic densitometer constructs a broad area, two dimensional projection image from a combination of a set of smaller fan beam scans by tilting the axis of each such smaller scan to construct an effective larger fan beam to reduce artifacts caused by height dependant overlap of the multiple fan beams. The data is projected to a non-planar image surface to eliminate local area distortion such as may cause error in density measurements and to permit some overlap without height sensitive effects.

REFERENCES:
patent: 4709382 (1987-11-01), Sones
patent: 4811373 (1989-03-01), Stein
patent: 5132995 (1992-07-01), Stein
patent: 5132996 (1992-07-01), Moore et al.
patent: 5177776 (1993-01-01), Ohmari et al.

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