X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1984-09-07
1989-02-07
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Specific application
Absorption
378108, 378146, G01N 2304
Patent
active
048037141
ABSTRACT:
There is disclosed a method for forming a radiogram of an object comprising the steps of energizing an X-ray source at a low level of radiation intensity wherein the X-ray source includes a slit diaphragm, pivoting the X-ray source during a first scanning of the object, moving an elongated X-ray detector in respect to the pivoting of the X-ray source to generate an output signal of intensity of the object during the first scanning thereof, measuring the output signal during at least a portion of said first scanning, energizing the X-ray source to a higher level of radiation intensity as determined by the output signal from the X-ray detector during the first scanning, pivoting the X-ray source during a second scanning of the object, moving the X-ray detector during the second scanning to generate a second output of radiation intensity and forming a radiogram from the second output signals.
REFERENCES:
patent: 2837657 (1958-06-01), Craig et al.
patent: 3766387 (1973-10-01), Heffan et al.
patent: 3832546 (1974-08-01), Morsell et al.
patent: 3924133 (1975-12-01), Reiss
patent: 4433430 (1984-02-01), Fredzell
B. V. Optische Industrie "De Oude Delft"
Fields Carolyn E.
Marn Louis E.
Porta David P.
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