X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1997-03-21
1998-12-08
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378901, A61B 603
Patent
active
058481141
ABSTRACT:
A computerized tomography system including an X-ray source for emitting X-rays in a cone-beam shape, a two-dimensional X-ray image acquirer which is arranged so as to face the X-ray source and acquires an image of an object by using the X-rays; and rotator for rotating the X-ray source and the two-dimensional x-ray image acquirer around the object, wherein a three-dimensional reconstructed image is formed from the projection images acquired by the two-dimensional X-ray image acquirer while rotating the rotator. An iterative reconstruction calculator for forming the three-dimensional reconstructed image from the projection images is provided. The three-dimensional reconstructed image without artifacts can be acquired from a small amount of projection data.
REFERENCES:
patent: 5210421 (1993-05-01), Gullberg et al.
patent: 5253171 (1993-10-01), Hsiao et al.
patent: 5338936 (1994-08-01), Gullberg et al.
Kawai Hiroyuki
Obi Takashi
Ohyama Nagaaki
Sekihara Kensuke
Yamaguchi Masahiro
Bruce David Vernon
Hitachi Medical Corporation
Porta David P.
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