Berlin 2012 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 2: Advanced Diagnostic Imaging II
ST 2.5: Vortrag
Montag, 26. März 2012, 16:40–17:00, HFT-FT 101
Monochromatic computed tomography with a compact laser-driven synchrotron X-ray source — •Klaus Achterhold1, Martin Bech1, Simone Schleede1, Guillaume Potdevin1, Ron Ruth2, Rod Loewen2, and Franz Pfeiffer1 — 1Department of Physics (E17) and Institute of Medical Engineering (IMETUM), Technische Universität München, Germany — 2Lyncean Technologies Inc., Palo Alto 94306, California, USA
We report the first quantitative computed tomography (CT) measurements using a laser-driven compact synchrotron X-ray source. Herein nearly monochromatic, tunable X-rays are produced by the inverse Compton scattering of infrared Laser photons. Quantitative CT results are obtained at 21 keV on mass absorption coefficients in a phantom sample. The phantom was a water-filled cylindrical plastic container. The monochromatic data are compared to results obtained from a rotating anode X-ray tube generator producing polychromatic radiation at various peak voltages. The findings confirm that a laser-driven compact synchrotron X-ray source can indeed yield much higher CT image quality, particularly if quantitative aspects of computed tomographic imaging are considered.