Image reconstruction method and arithmetic unit for a computed t

Details Image reconstruction method and arithmetic unit for a computed t Image reconstruction method and arithmetic unit for a computed t

1997-04-17

1998-07-14

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 600425, A61B 603

Patent

active

057816050

ABSTRACT:
In a computed tomography apparatus with a volume reconstruction by a three-dimensional gridding algorithm an arithmetic unit and method for operating same are provided for efficiently implementing the three-dimensional gridding algorithm. In this arithmetic unit and method, randomly-distributed supporting points SP are weighted in the frequency space in order to be able to apply a 3D gridding algorithm for a three-dimensional Fourier reconstruction for a computed tomography apparatus. An ASIC is provided wherein the supporting point weighting and the 3D gridding algorithm are efficiently implemented.

REFERENCES:
patent: 4707786 (1987-11-01), Dehner
patent: 5654995 (1997-08-01), Flohr
patent: 5701360 (1997-12-01), Flohr
patent: 5703920 (1997-12-01), Wohlrab

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