Methods and apparatus for single slice helical image reconstruct

Details Methods and apparatus for single slice helical image reconstruct Methods and apparatus for single slice helical image reconstruct

1996-11-20

2000-07-18

Chang, Jon

Image analysis

Applications

Biomedical applications

378 15, 378901, G06K 900

Patent

active

060918403

ABSTRACT:
The present invention, in one form, is a system for performing image reconstruction using data acquired from a single detector row in a helical scan. More specifically, a modified weighting factor W.sub.f (.beta.,.gamma.), which is a shifted and weighted average version of the single slice helical weighting factor, is generated. The modified weighting factor is then applied to data to reduce image noise and artifacts and/or increase image sharpness.

REFERENCES:
patent: 5216601 (1993-06-01), Crawford et al.
patent: 5270923 (1993-12-01), King et al.
patent: 5513236 (1996-04-01), Hu
patent: 5515409 (1996-05-01), Hsieh
patent: 5606585 (1997-02-01), Hu
Bresler et al., "Optimal Interpolation in Helical Scan 3D Computerized Tomography." ICAS SP-89, vol. 3, pp. 1472-1475, May 1989.
Kudo et al. "Helical-Scan Computed Tomography Using Cone-beam Projections." 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference, vol. 3, pp. 1958-1962, Nov. 1991.

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