Image plane indicator

X-ray or gamma ray systems or devices – Specific application – Tomography

Patent

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Details

378 25, 378 20G, G03B 4116

Patent

active

044425333

ABSTRACT:
An indicator for visibly defining the image plane located at the movable fulcrum of a tomography X-ray machine. The indicator includes a laser beam light source mounted for vertical movement along a rack and pinion assembly. As the fulcrum of the X-ray machine is raised or lowered with respect to the patient to take X-ray images along different horizontal planes, a pulse generator generates a signal responsive to the movement. The signal operates a servo-drive mechanism that moves the light source a corresponding vertical distance along the rack and pinion assembly.

REFERENCES:
patent: 4117337 (1978-09-01), Saats
patent: 4315156 (1982-02-01), Sell

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