X-ray calipers

Details X-ray calipers X-ray calipers

1976-04-15

1978-07-04

Aegerter, Richard E.

Geometrical instruments

Miscellaneous

Light direction

33143C, 33148E, 128 2S, 235 88R, G06G 102, G01B 506, A61B 510

Patent

active

040979970

ABSTRACT:
An X-ray caliper is disclosed having upper, intermediate, and lower discs movable relative to each other, the upper and lower discs have arms extending therefrom between which the part of the anatomy to be x-rayed is positioned, the upper disc has a chart thereon of electrical current versus time and the intermediate disc has on the top surface thereof scales of peak kilovoltages and on the lower surface thereof a listing of various parts of the anatomy. When the part of the anatomy to be x-rayed has been measured and that part listed on the intermediate disc has been positioned relative to the lower disc, the peak kilovoltage range will appear opposite the chart on the upper disc and values of time, electrical current and the product thereof for various kilovoltages can be read therefrom for setting an x-ray machine. The chart can also be moved relative to the upper disc.

REFERENCES:
patent: 2533580 (1950-12-01), Hall
patent: 2663086 (1953-12-01), Gardner
patent: 3058653 (1962-10-01), Des Granges
patent: 3333343 (1967-08-01), Elfast, Jr.
patent: 3604622 (1971-09-01), Yamada

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