Computed tomography apparatus

Details Computed tomography apparatus Computed tomography apparatus

1993-08-27

1996-06-04

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378907, 36441318, A61B 603

Patent

active

055241301

ABSTRACT:
A tomographic image at a given slice position is normally reconstructed by executing convolution and back projection calculations of virtual view data obtained by interpolating projection data in a range of 360.degree.+a double fan angle before and after the slice position, and their reflection beam data. A tomographic image at a slice position adjacent to the given position is calculated in such a manner that the convolution and back projection calculations of the difference between data used in reconstruction of the tomographic image at the first slice position, and data necessary for normally reconstructing a tomographic image to be reconstructed at a current slice position are executed, and the calculation result is added to the already reconstructed tomographic image.

REFERENCES:
patent: 4495645 (1985-01-01), Ohhashi
patent: 5046003 (1991-09-01), Crawford
patent: 5208746 (1993-05-01), King et al.
patent: 5216601 (1993-06-01), Crawford et al.
patent: 5233518 (1993-08-01), King et al.
patent: 5315665 (1994-05-01), Ohhashi

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