Methods and apparatus for three-dimensional and maximum intensit

Details Methods and apparatus for three-dimensional and maximum intensit Methods and apparatus for three-dimensional and maximum intensit

1996-11-18

1998-10-06

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, A61B 603

Patent

active

058188967

ABSTRACT:
The present invention, in one form, is a system for reducing noise artifacts in three-dimensional image reconstruction using data acquired in a helical scan. More specifically, a standard deviation ratio of reconstructed images with and without helical weighting is identified. Such standard deviation ratio is then used to generate filter coefficients, which are then applied to the data in an adaptive smoothing algorithm.

REFERENCES:
patent: 5454019 (1995-09-01), Migita et al.
patent: 5530731 (1996-06-01), Polacin et al.
patent: 5625660 (1997-04-01), Tuy

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