X-ray diagnostic system for angiographic radiographs

Details X-ray diagnostic system for angiographic radiographs X-ray diagnostic system for angiographic radiographs

1982-09-28

1984-10-16

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

Object responsive control

378 99, G03B 4116

Patent

active

044779232

ABSTRACT:
An exemplary embodiment comprises a patient support, an x-ray tube supplied by an x-ray generator, an x-ray image intensifier with a series connected television chain, a control loop for the controlling the mean image brightness, a syringe for contrast medium injection, and a program memory for storing several radiographic exposure programs. A time measuring device is present which is started by the syringe and is stopped by an evaluation unit when the mean image brightness varies to a predetermined extent. A computer calculates the contrast medium velocity from the measured time and the distance (x) between the injection location and the measuring location. On the basis of the calculated contrast medium velocity, an optimum program calculation, or program selection, respectively, is possible.

REFERENCES:
patent: 4185198 (1980-01-01), Fujimoto
Holik, V. B. "Methode zur Vermeidung der Fehlprogrammierung bei der Becken-Bein-Angiographie mit schrittweiser Tischplattenverschiebung", Electromedica, 1/1977, pp. 2 through 6.

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