X-ray diagnostic apparatus

Details X-ray diagnostic apparatus X-ray diagnostic apparatus

1985-06-12

1990-05-15

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378 99, 358111, H05G 164

Patent

active

049264540

ABSTRACT:
X-ray diagnostic apparatus is disclosed which includes a video camera; at least one image memory (12); one subtraction stage (13) for producing subtraction images by forming the difference from a stored video signal and a video signal chronologically following the stored video signal; an evaluation circuit (14 to 21) for evaluating the time of the difference signal; and a color video monitor (7). The evaluation circuit (14 to 21) contains a time stage (15) and a color converter (14). The color converter (14) is directly coupled to the subtraction stage (13) and converts the subtraction image into a black and white (monochrome) intensity image whose image color is controlled by the time stage (15) in dependence upon the chronological occurrence of the subtraction image. The color converter (14) has one output for each of the primary colors (red, green, blue). One memory (16 to 18) is coupled to each of these outputs for the storing of the output signals of the color converter (14) by summation.

REFERENCES:
patent: 4398213 (1983-08-01), Haendle et al.
patent: 4536790 (1985-08-01), Kruger et al.
patent: 4581635 (1986-04-01), Franke

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