Baird Corporation

Baird-atomic, Inc.

Raymond P Grenier

William E Westell

Johan A Govaert

A computer controlled high resolution radiaoactivity distribution detection system is provided for sensing radioactive events in a biological specimen. The system includes a rotating disc memory which contains instructional data for controlling the computer. Radiation emitted from a subject positioned on programmable XY platform is directed through a collimator and is detected by means of an array of sensing devices and front end electronics. The detected radioactive events are temporarily held in a buffer memory under control of the computer for storage. The temporarily stored data is fed via the computer to a disc memory for long term storage, a disc controller constitutes an interface to the disc memory. The stored data is then applied to a display via computer for presentation.

Method and apparatus for determining the condition of a biological

A display system in which a video signal derived from digital data is processed in a processor in order to produce an analog image of the digital data on a cathode-ray tube display by intensity modulation of the display beam according to an approximate two-dimensional Gaussian spread function centered about each digital data point.

Image display system

A computer controlled high resolution radioactivity distribution detection system is provided for sensing radioactive events in a biological specimen. The system includes a rotating disc memory which contains instructional data for controlling the computer. Radiation emitted from a subject positioned on a programmable XY platform is directed through a collimator and is detected by means of an array of sensing devices and front end electronics. The detected radioactive events are temporarily held in a buffer memory under control of the computer for storage. The temporarily stored data is fed via the computer to a disc memory for long term storage, a disc controller constitutes an interface to the disc memory. The stored data is then applied to a display via computer for presentation.

A device for presenting a halftone pictorial presentation composed of dot picture elements by selectively controlling the number of dot picture elements per unit area at locations on a display. In a high resolution radioactivity distribution detection system, the number of detected radioactive elements at XY locations of an array of sensing devices are fed to a computer and stored at corresponding address locations. The number of radioactive events detected at each address location is normalized into Gray scale coded signals as a function of the greatest number of radioactive events detected at any one address location. The normalized Gray scale coded signals are applied to a display for controlling the number of dot picture elements per unit area presented at corresponding XY locations on the display. The number of radioactive events detected at XY locations of the array are presented on the display as a halftone pictorial representation; the greatest number of picture dot elements per unit are being presented as a brighter image.

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Wilmington, MA, United States of America

Raymond P Grenier