Primary beam means radiation which passes through an aperture of the source housing by a direct path from the x-ray tube or a radioactive source located in the radiation source housing.
Graham + Sibbald /"we"/"us"/"our" means Graham + Sibbald LLP, a limited liability partnership incorporated in Scotland (Registered Number SO307130) and having its registered office address at Seabraes House, 18 Greenmarket, Dundee, DD1 4QB.
Nominal tomographic section thickness means the full width at half-maximum of the sensitivity profile taken at the center of the cross-sectional volume over which x-ray transmission data are collected.
Licensed behavior analyst means a person who holds current certification or meets the standards to be certified as a board certified Behavior Analyst or a board certified Assistant Behavior Analyst issued by the Behavior Analyst Certification Board, Inc., or any successor in interest to that organization and whom the Board of Psychological Examiners licenses as a Behavior Analyst.
Beam scattering foil means a thin piece of material (usually metallic) placed in the beam to scatter a beam of electrons in order to provide a more uniform electron distribution in the useful beam.