X-ray image correction apparatus

Details X-ray image correction apparatus X-ray image correction apparatus

1984-05-04

1987-01-13

Smith, Jerry

Boots, shoes, and leggings

382 42, 358111, H04N 532

Patent

active

046369538

ABSTRACT:
An X-ray image correction apparatus has a subtraction processing circuit for subtracting image signals read out from the memories which store X-ray image signals corresponding to X-ray images taken before and after the injection of a contrast medium. An interest area is specified in the part which does not vary readily from the injection of the medium and this interest area is divided into a plurality of sections for each of which a position correction valve is calculated by a position correction valve calculator. The most common correction value of all the sections is used to correct misalignment between the before- and after-injection images.

REFERENCES:
patent: 4049958 (1977-09-01), Hartmann
patent: 4084255 (1978-04-01), Casasent et al.
patent: 4188640 (1980-02-01), Dittrich et al.
patent: 4558462 (1985-12-01), Horiba et al.
patent: 4564861 (1986-01-01), Hishinuma et al.
European Search Report 11/14/84 0125130.

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