Method and system for displaying X-ray images of blood-vessel st

Details Method and system for displaying X-ray images of blood-vessel st Method and system for displaying X-ray images of blood-vessel st

1989-11-01

1990-07-24

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

378 62, 358111, H04N 532

Patent

active

049439871

ABSTRACT:
X-ray mask images of a subject are acquired by a TV camera before a contrast media injected by a injector reaches a region of interest of the subject, the acquired X-ray mask images are stored in a mask image memory in accordance with a frame counter and a memory controller. X-ray contrast images of the subject are acquired by the TV camera after the contrast media reaches the region of interest of the subject, the acquired X-ray contrast images are stored in a contrast image memory in accordance with a frame counter and a memory controller. The mask images and contrast images are subtracted by a subtraction processor, and X-ray subtraction images are obtained. The X-ray images of the subject acquired by the TV camera and the X-ray subtraction images are superimposed by a superimposition processor, and then are displayed on a TV monitor.

REFERENCES:
patent: 4433428 (1984-02-01), Haendle et al.
patent: 4542459 (1985-09-01), Riederer
patent: 4559557 (1985-12-01), Keyes et al.
patent: 4692864 (1987-09-01), Shimoni et al.
patent: 4706268 (1987-11-01), Onodera
patent: 4709385 (1987-11-01), Pfeiler et al.
W. Seyferth et al., "Pfadfindertechnik: eine Erganzung der Digitalen Subtraktionsangiographie im fluoroskopischen Betrieb," Electromedica, 53, (1985), pp. 39-45.

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