Method of and device for positioning an X-ray cassette

Details Method of and device for positioning an X-ray cassette Method of and device for positioning an X-ray cassette

1995-08-28

1996-05-14

Church, Craig E.

X-ray or gamma ray systems or devices

Accessory

Alignment

378205, A61B 608

Patent

active

055175465

ABSTRACT:
A method of, and a device for positioning an X-ray cassette (5 or 10) in relation to a source (1) of X-rays that emits radiation in a specific preferred direction (A). Another beam of radiation is emitted parallel to that direction at a specific distance (d) therefrom. The other beam is intercepted by a positioning device (20) secured to the cassette. The device produces a signal as long as the angle of incidence of the other beam does not exceed a specific threshold angle (.theta.) with respect to the normal to the cassette.

REFERENCES:
patent: 5241578 (1993-08-01), MacMahon
Laser Alignment System for High-Quality Portable Radiography, H. MacMahon, MD, Nicholas J. Yasillo & Michael Carlin, RT, Radiographics 1992; 12:111-120.

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