X-ray or gamma ray systems or devices – Nonphotographic detector support
Patent
1987-12-03
1989-12-26
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Nonphotographic detector support
378190, 378 65, H01J 3150
Patent
active
048903132
ABSTRACT:
An x-ray imager system of the type that indicates alignment of patient treatment field with x-ray field, using fluorescence screen and imaging sensor, has a cabinet that permits selection of two pre-determinable orientations of cabinet parts mounting the fluorescence screen and sensor (1) at 90.degree. to each other and (2) in linear alignment with each other, by pivoting of upper and lower portions of the cabinet relative to each other. For this, any axially aligned ring-bearing fixed at 45.degree. to the vertical rotatively joins together respective 45.degree. diagonal ends of the cabinet parts, and a detent holds the diagonal ends in either of the two pre-determinable positions of the cabinet parts to each other. A mirror that relays the image at one orientation can be retracted from position in the light path to avoid the beam, when not used.
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Lam Veronica Y.
Lam Wing-Chee
Fields Carolyn E.
Johns Hopkins University
Porta David P.
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