Method for operating a medical imaging apparatus using an improv

Details Method for operating a medical imaging apparatus using an improv Method for operating a medical imaging apparatus using an improv

1992-09-29

1994-10-11

Hayes, Gail O.

Boots, shoes, and leggings

G06F 1542

Patent

active

053553101

ABSTRACT:
An improved filtered back-projection technique for operating a medical imaging apparatus as disclosed wherein image noise and artifacts are reduced. In the improved method, back-projection image contributions are obtained from regions which lie outside the primary examination region. Correction projections are produced from these outside regions. The image produced by back-projection of the correction projections in the examination region is subtracted from an original, uncorrected image. The integrations which are undertaken when producing the correction projections are made along respective straight lines which are also used to characterize the projection values in the original, uncorrected image.

REFERENCES:
patent: 4707786 (1987-11-01), Dehner
"Direct Fourier Reconstruction in Fan-Beam Tomography," Peng et al., IEEE Trans. on Med. Imag., vol. MI-6, No. 3, Sep. (1987) pp. 209-219.

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