Accession Number : ADA323986

Title :   Crystal Diffraction Spectrometry for Accurate, Non-Invasive KV/Spectral Measurement for Improvement of Mammographic Image Quality.

Descriptive Note : Final rept. 18 Apr 94-31 Dec 96,

Corporate Author : NATIONAL INST OF STANDARDS AND TECHNOLOGY GAITHERSBURG MD

Personal Author(s) : Deslattes, Richard D. ; Hudson, Lawrence T.

PDF Url : ADA323986

Report Date : DEC 1996

Pagination or Media Count : 41

Abstract : This contract has been devoted to the development and demonstration of the NIST prototype crystal spectrometer which was designed to provide accurate measurement of x-ray source voltage and full spectral characterization of the radiation emitted from mammographic x-ray sources. A major advance has been the movement from film to solid state image registration. Studies in a clinical environment led to refinements in packaging and portability, and revealed the need to increase device sensitivity. The detection efficiency was increased manyfold by optimum choice of diffracting crystal plane and modification of the CCD sensor package.

Descriptors :   *SPECTROMETRY, *CRYSTALS, *DIFFRACTION, *IMAGES, *MAMMOGRAPHY, MEASUREMENT, RADIATION, CLINICAL MEDICINE, PROTOTYPES, X RAYS, SPECTROMETERS, IMAGE REGISTRATION, HIGH VOLTAGE, FILTRATION.

Subject Categories : Medicine and Medical Research
      Crystallography
      Atomic and Molecular Physics and Spectroscopy
      Optics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE