Abstract: A collimated beam of gamma radiation is applied to a test object under non-destructive examination to produce a scattered gamma radiation field within which detectors are positioned to provide radiation energy level data of the field. Such measurement data is processed by comparison with reference data from a flawless object to provide differential scatter gamma spectra. The differential spectra are transformed by spatial/energy data processing to extract accurate location and size data with respect to any flaws present in the test object.

Abstract: A radiation eye shield adapted to protect the wearer from the hazards of direct beam and scattered radiation. In one embodiment, the entire eye shield is of a high density material and in another example of the invention, the shield comprises goggles having a pair of lead-glass lenses and lead impregnated vinyl shielding applied to the front and side surfaces of the goggles surrounding the lenses.

Abstract: Sorption means are provided for sorbing radioactive gases, as in the exhalations of a living subject, especially for nuclear diagnostic test studies, comprising means for adsorbing the radioactive gas onto activated carbon, the carbon being contained in a plurality of independent, series-connected, chambers. The sorption means are especially adapted for the adsorption of radioactive inert gases such as xenon-133 (.sup.133 Xe). There can also be provided indicator means for indicating the flow-through of xenon comprising an indicator which changes color upon contact with xenon, such as dioxygenylhexafluoroantimoniate.

Abstract: An infant immobilizing device capable of supporting an infant thereon in various positions for the performance of operations. The device also includes means for holding and positioning an X-ray film cassette so that a full series of X-rays can be taken without the infant being otherwise held.