CT system with twin fan beam helical scan

Details CT system with twin fan beam helical scan CT system with twin fan beam helical scan

1993-12-30

1995-11-21

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 15, 378901, A61B 603, G01N 23083

Patent

active

054694876

ABSTRACT:
A method of producing a tomographic image from x-ray projection data acquired during a helical scan with two fan beams, includes weighting selected data in each projection data array to account for data redundancy and distance from the image plane. Each weighted array of projection data is back projected and combined to form the desired slice image.

REFERENCES:
patent: 4725963 (1988-02-01), Taylor et al.
patent: 5170346 (1992-12-01), Crawford et al.
patent: 5216601 (1993-06-01), Crawford et al.
patent: 5265142 (1993-11-01), Hsieh
Optimization of Short Scan Convolution Reconstruction In Fan Beam CT, Dept of Radiation Oncology, Univ. of Calif. at San Francisco, 1982, pp. 199-202, Dennis L. Parker.
Computed Tomography Scanning With Simultaneous Patient Translation, Med. Phys. 17(6), Nov/Dec 1990, pp. 967-982, Carl R. Crawford, et al.

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