Computed tomography apparatus

Details Computed tomography apparatus Computed tomography apparatus

1995-12-01

1996-12-10

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

36441315, A61B 603, G01N 23083

Patent

active

055839037

ABSTRACT:
In a computed tomography apparatus which irradiates an X-ray ray fan beam to a slice of a subject body from various directions around the slice, detects the image data of the X-ray ray that has passed the subject body to obtain projection data, and performs reconstruction computation on the projection data to acquire the tomographic image of the slice of the subject body, a main detector which has a plurality of rows of detection elements are aligned in association with a plurality of slices of the subject body and detects projection data of a plurality of slices at a time, a profile detector which has the same number of rows of detection elements as the main detector and measures a profile in the slice direction of the amount of X-ray ray incident to the main detector, and a data processing device for compensating the projection data output from the main detector in accordance with the output of the profile detector.

REFERENCES:
patent: 4075484 (1978-02-01), Meyer-Ebrecht et al.
patent: 4995107 (1991-02-01), Klingenbeck
patent: 5253170 (1993-10-01), Kanamori et al.
patent: 5430785 (1995-07-01), Pfoh et al.

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