X-ray or gamma ray systems or devices – Beam control – Scanner
Patent
1982-09-22
1984-12-25
Smith, Alfred E.
X-ray or gamma ray systems or devices
Beam control
Scanner
378147, G03B 4116
Patent
active
044908350
ABSTRACT:
An X-ray examination device has an X-ray tube, a primary X-ray diaphragm attached to the X-ray tube and disposed close to the focus thereof, a patient support bed, and an X-ray exposure device disposed behind the patient's support bed in the radiation direction having an X-ray image carrier and a stray radiation screen. The primary X-ray diaphragm includes a first slit beam collimator for generating a fan-shaped radiation beam and the X-ray exposure device has a second slit beam collimator in the form of two displaceable diaphragm plates and an adjustment device for moving the plates relative to one another to achieve a slit opening therebetween of desired width. The examination device further includes synchronized drive units for moving the X-ray tube and the second beam collimator in fixed alignment for sweeping the radiation beam across a patient on the support bed.
REFERENCES:
patent: 4097748 (1978-06-01), Monvoisin
patent: 4203037 (1980-05-01), Gur et al.
"Slit Radiography Method Comprising a Co-Guided Radiator," R. Moore and K. Amplatz, Electromedica, vol. 49, No. 1, pp. 34-41, Jan. 1981 (plus translation).
Moore et al., "A Method to Absorb Scattered Radiation Without Attenuation," Radiology, vol. 120, 1976, pp. 713-717.
Grigsby T. N.
Siemens Aktiengesellschaft
Smith Alfred E.
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