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Methods for 2-color radiography with laser-compton X-ray sources

Patent ·
OSTI ID:1600409
High-contrast, subtraction, x-ray images of an object are produced via scanned illumination by a laser-Compton x-ray source. The spectral-angle correlation of the laser-Compton scattering process and a specially designed aperture and/or detector are utilized to produce/record a narrow beam of x-rays whose spectral content consists of an on-axis region of high-energy x-rays surrounded by a region of slightly lower-energy x-rays. The end point energy of the laser-Compton source is set so that the high-energy x-ray region contains photons that are above the k-shell absorption edge (k-edge) of a specific contrast agent or specific material within the object to be imaged while the outer region consists of photons whose energy is below the k-edge of the same contrast agent or specific material. Scanning the illumination and of the object by this beam will simultaneously record and map the above edge and below k-edge absorption response of the object.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
10,508,998
Application Number:
15/319,986
OSTI ID:
1600409
Country of Publication:
United States
Language:
English

References (5)

High-Power Picosecond Pulse Recirculation for Inverse Compton Scattering journal November 2008
Design and operation of a tunable MeV-level Compton-scattering-based γ -ray source journal July 2010
Inverse compton scattering gamma ray source
  • Boucher, S.; Frigola, P.; Murokh, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 608, Issue 1, p. S54-S56 https://doi.org/10.1016/j.nima.2009.05.035
journal September 2009
High-power picosecond laser pulse recirculation journal January 2010
Transmission-based detection of nuclides with nuclear resonance fluorescence using a quasimonoenergetic photon source journal October 2009

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62 RADIOLOGY AND NUCLEAR MEDICINE