Tomodensitometry image acquisition and reconstruction process an

Details Tomodensitometry image acquisition and reconstruction process an Tomodensitometry image acquisition and reconstruction process an

1984-10-19

1987-07-14

Howell, Janice A.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 19, A61B 600

Patent

active

046807829

ABSTRACT:
An image acquisition and reconstruction process for increasing the definition of the radiological image obtained by tomodensitometry. The invention consists in taking two series of data or "views" and in arranging this data by causing the views W.sub.i of the second series to undergo a translation of --.pi..theta. and a symmetry --.gamma., in the space [.theta.,.gamma.], .theta. being equal to .beta.+.gamma.; .gamma. designates the angle between the different detectors and the straightline joining the origin of the fan-shaped X ray beam to the center of rotation of the source-detectors assembly and .beta. represents the different angles of the source-detectors assembly at which acquisition of the views is made.

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patent: 3940626 (1976-02-01), Hounsfield
patent: 3944833 (1976-03-01), Hounsfield
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patent: 4555760 (1985-11-01), Op de Beek et al.
Kowalski et al., "New Means for Picture Formation in Computer Tomography", Optik, vol. 55, No. 1, Feb. 1980, pp. 67-86.
IEEE Transactions on Nuclear Science, vol. NS-26, No. 2, Apr. 1979, IEEE New York (US) G. Kowalski: "Multislice Reconstruction from . . . ".

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