title: Improvement of visual resolution in fluorescent scanning by a new subtraction procedure for backscatter.
abstract: A new subtraction method was developed to improve visual resolution in fluorescent scanning. A digital gate circuit could subtract backscatter of a fluorescing gamma ray source in real time without the need for a computer for postprocessing of the image data.
mesh_terms: D005069:Evaluation Studies as Topic; D005453:Fluorescence; D005720:Gamma Rays; D006801:Humans; D011859:Radiography / Q000379:methods; D012542:Scattering, Radiation; D013382:Subtraction Technique; D013961:Thyroid Gland / Q000000981:diagnostic imaging