Apparatus for reduction of scatter in diagnostic radiology

Details Apparatus for reduction of scatter in diagnostic radiology Apparatus for reduction of scatter in diagnostic radiology

1990-05-22

1992-05-05

Howell, Janice A.

X-ray or gamma ray systems or devices

Beam control

Scanner

378154, 378155, 2505051, G21K 510, G21K 100

Patent

active

051114950

ABSTRACT:
Scanning slit radiography apparatus with a radiographic grid of the invention makes possible the X-ray imaging at an enhanced primary radiation transmission, yet at a reduced scatter transmission. By orienting long axes A of radiopaque strips 12 obliquely to the sweep S of the grid 1, the strips 12 being separated by air interspaces 13 can be performed with a sufficient own stiffness that no aluminum top and bottom covers are needed. The planes of downward lateral faces 12' intersect each other in an upward decentration line D.sub.+ and the planes of upward lateral faces 12" intersect each other in a downward decentration line D.sub.-. In a preferred embodiment of the invention the grid 1 is inclined during the sweep S so that the convergent line of the grid continues to pass through the tube focus.

REFERENCES:
patent: 4096391 (1978-06-01), Barnes
patent: 4264824 (1981-04-01), Tosswill
patent: 4677652 (1987-06-01), Duinker et al.

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