X-ray CT scanner and method of collecting image data in the same

Details X-ray CT scanner and method of collecting image data in the same X-ray CT scanner and method of collecting image data in the same

1995-01-24

1996-06-18

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, 36441319, A61B 603

Patent

active

055286445

ABSTRACT:
In an X-ray CT scanner, a first field of view corresponding to a reconstructed area of an image to be displayed is set. An original image data are reconstructed on the basis of a plurality of projection data in a patient in response to the first field of view. Whether or not an imaged region in the patient is larger than the first field of view is judged according to referring the original image data. A second field of view including the imaged region wholly is set in case that the imaged region is larger in area than the first field of view. Beam hardening correction data are produced on the basis of the projection data in the second field of view. The projection data are processed into the image corresponding to the first field of view with an aid of the correction data.

REFERENCES:
patent: 5043890 (1991-08-01), King
patent: 5457724 (1995-10-01), Toth

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