Apparatus and method for fluoroscopic imaging of a body

Details Apparatus and method for fluoroscopic imaging of a body Apparatus and method for fluoroscopic imaging of a body

1982-11-26

1985-08-20

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

378 99, 128654, 128691, H04N 718

Patent

active

045367906

ABSTRACT:
The disclosure is directed to a method and apparatus for generating a processed video image of a fluid-carrying vessel in a body, and can also be used to obtain information concerning the flow rate of blood in the vessel. In the disclosed method, a contrast medium is injected into the body, typically into the vessel to be imaged or leading into the vessel to be imaged. A source of X-radiation is directed at the body, and radiation which passes through the body is detected and converted into a series of frames of electronic video signals, preferably in digital form. The frames represent images of the radiation transmission characteristics of the body at a series of successive times. Each frame includes an array of pixels, the video level at each pixel of a frame being determined by the radiation transmissivity of the body through an elemental region thereof. A processed video image can then be displayed which has a video parameter, such as luminance, that depends, at each pixel, on a time-representative value for the pixel. This processed image shows the progress of the contrast material, as a function of time, through the vessel of interest.

REFERENCES:
patent: 4335427 (1982-06-01), Hunt et al.
patent: 4467352 (1984-08-01), Saalfrank

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