Abstract:
The detector signal in an X-ray scanning system is electronically analyzed; when the system resolves an object too small to be visualized when displayed in a standard shadowgraphic format on a cathode ray tube, a generated marker appears on the cathode ray tube display representative of the object's location and size/density.
Abstract:
An arc-shaped X-ray beam penetrates an arcual cross-sectional area of a body and the attentuated transmitted beam irradiates a portion of a circular array of detectors on a rotating disc. The detectors operate to generate signals proportional to the intensity of the incident transmitted radiation. The beam and detectors are moved along the axis of the body during rotation of the disc to irradiate adjacent cross-sectional areas of the body. A computer operated CRT receives the detector signals and displays an image of the radiation attentuation characteristics of the scanned arcual areas.
Abstract:
Inert gas under pressure forces a suspension of particles in a carrier fluid through a flow channel including tubes of narrow diameter at a pressure high enough to establish laminar flow free from turbulence at a speed determined by a constant displacement rate syringe at the downstream end of the flow channel. At at least two locations along the flow channel measurements are made of particle conditions, such as radioactivity and size, to provide a multiple of particle signals which are correlated to provide a multi-dimensional characterization of the particles, such as the number of cells exceeding a predetermined radioactivity level for each of a number of cell size ranges.