There has been a large increase in the number of three-phase
diagnostic x-ray systems installed in hospital special-procedure rooms
during the last decade. The reason for this is the capability of three-phase
systems of making possible the very short exposure times and
increased tube loading required for some of the...
The objective of this study was to determine the relative speeds
of available medical x-ray films exposed directly to x-rays and exposed
in combination with various types of intensifying screens. The
information obtained from this sensitometric data was used to obtain
factors by which a radiographic exposure technique with one...
At the time of this study 19 states have entered into agreements, one state agreement is pending and one state has submitted its proposal for entering into an agreement with the Atomic Energy Commission for the purpose of assuming regulatory authority over (1) byproduct, (2) source and (3) special nuclear...
From the time when fluoroscopic screens were first used there
have been scattered references to reduction in their light output due
to age, use, etc. References are scarce and usually devoid of
quantitative data. A long-range program has been set up in an effort
to arrive at some meaningful information....
The X-ray dose absorbed in soft tissue located near plane
bone interfaces and in parallel-slab bone cavities was measured
experimentally with a polyethylene-film dosimeter.
The dose absorbed in soft tissue adjacent to plane bone interfaces
was measured by placing a 12.7 micron film of polyethylene,
upon which were deposited graphite...
A design for an x-ray diffraction teaching device has been
presented. From the design a diffraction device has been constructed.
Based on the principles of the original work by Max von Laue,
a diffraction camera has been constructed using a diagnostic x-ray
machine. The diffraction camera provides a fast, safe,...
A design for an x-ray machine to be used as a visual aid for the
instruction of x-ray theory and x-ray machine operation has been
presented. From this design an x-ray machine was constructed and
tested.
Components used in an x-ray machine have been divided in
to three sections; a...
A method is presented for enlarging read-outs from a Victoreen
Model 575 Radocon, an ionization chamber type of radiation survey
instrument. The read-out enlargement is accomplished by taking the
signal across the Radocon indicating meter, amplifying it, and using
the amplified signal to drive a projection meter. The face and...
Purpose of the Study: This study was undertaken as a result of interest in the
introduction of guide groups into the operation of secondary
schools. Particularly when viewed from the historical perspective
of the times in which it was initiated, the guide group concept
offers an opportunity to examine the...