Patents Assigned to Ministere Des Affaires Sociales
  • Patent number: 4392240
    Abstract: A method and a device for sampling a radiation field emitted from an X-ray machine for determining certain operational characteristics of the machine. A cassette container is disposed at a predetermined position relative to a radiation field of the X-ray machine. The cassette container houses a removable holder containing one or more thermo-luminiscent crystals associated with a respective one or more crystal filters supported in the container. The filters have different densities from one another.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: July 5, 1983
    Assignee: Ministere Des Affaires Sociales
    Inventors: Richard Tremblay, Jean Tremblay