X-ray television apparatus

Details X-ray television apparatus X-ray television apparatus

1988-07-18

1989-11-14

Fields, Carolyn E.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

378 99, H05G 164

Patent

active

048811246

ABSTRACT:
An X-ray television apparatus in which an X-ray image which is obtained by an X-ray image intensifier is converted to an electrical signal by a television camera. This electrical signal is converted to a digital signal and stored into an image memory, and the angiographic imaging can be performed due to a differential process of data between two X-ray images. Either one of first, second, and third operating modes in which the scanning periods and the numbers of scanning lines of the television camera differ and a fourth operating mode to obtain the X-ray images by a further low X-ray dose and to simultaneously monitor the X-ray images can be selected. Thus, proper time resolution and spatial resolution according to a desired purpose can be obtained and the beam current of the image pickup tube of the television camera which is optimum in each operating mode is set.

REFERENCES:
patent: 4204225 (1980-05-01), Mistretta
patent: 4442537 (1984-04-01), Haendle
patent: 4543605 (1985-09-01), Verhoeven
patent: 4555728 (1985-11-01), Fenster
REFERENCE DATA FOR RADIO ENGINEERS, 4th Ed., 1957, p. 22.

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