Zobrazeno 1 - 10
of 32
pro vyhledávání: '"L. D. Chapman"'
In vivoimaging of rat cortical bone porosity by synchrotron phase contrast micro computed tomography
Publikováno v:
Physics in Medicine and Biology. 60:211-232
Cortical bone is a dynamic tissue which undergoes adaptive and pathological changes throughout life. Direct longitudinal tracking of this remodeling process holds great promise for improving our understanding of bone development, maintenance and sene
Autor:
Arthur Jeremy Kropf, C. Karanfil, Carlo U. Segre, S. B. Aase, Jeff Terry, J. A. Fortner, Grant Bunker, L. D. Chapman, R. J. Finch
Publikováno v:
Review of Scientific Instruments. 74:4696-4702
A highly strained, curved silicon crystal in the Laue geometry has been used as a large-area x-ray fluorescence analyzer for x-ray absorption spectroscopy. The analyzer is able to resolve the Lα fluorescence lines for neighboring actinide elements.
Autor:
D.J. Krus, Terry M. Button, Jeffrey A. Coderre, E C Parsons, William Thomlinson, X. Y. Wu, F.A. Dilmanian, Zhong Zhong, F. Giron, Zhengrong Liang, Daniel N. Slatkin, L. D. Chapman, M.J. Petersen, D. Greenberg, C.T. Roque, K. Yamamoto, S Marcovici, J. Kress, B. Ren, M. Shleifer
Publikováno v:
Physics in Medicine and Biology. 42:371-387
We explored the potential for clinical research of computed tomography (CT) with monochromatic x-rays using the preclinical multiple energy computed tomography (MECT) system at the National Synchrotron Light Source. MECT has a fixed, horizontal fan b
Autor:
Brian Bewer, M.J.M. Duke, David M. L. Cooper, Yuchin Wu, Michael R. Doschak, Yasmin Carter, Arash Panahifar, W Zhouping, H M Britz, L D Chapman
Publikováno v:
Physics in medicine and biology. 57(18)
The bones of many terrestrial vertebrates, including humans, are continually altered through an internal process of turnover known as remodeling. This process plays a central role in bone adaptation and disease. The uptake of fluorescent tetracycline
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 49:600-605
Multiple Bragg diffraction effects have been observed in an Al–Cu–Fe quasicrystal. The experimental data are analyzed by means of a multibeam perturbation theory. Good fits are obtained between experimental and calculated profiles. The feasibilit
Monochromatic computed tomography of the human brain using synchrotron X-rays: technical feasibility
Autor:
Paul N. Luke, P.M. Stefan, L. D. Chapman, William Thomlinson, E. Nachaliel, Richard H. Pehl, F.A. Dilmanian, Albert C. Thompson, Mark L. Rivers, H. Moulin, Harvey Rarback, R.F. Garrett, P. Spanne, M.H. Miller, Nicholas F. Gmur, N. Lazarz
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 319:305-310
A monochromatic computed tomography (CT) scanner is being developed at the X17 superconducting wiggler beamline at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory, to image the human head and neck. The system configuratio
Autor:
W. Stoeber, A. Lenhard, R.F. Garrett, T. Oversluizen, F.A. Dilmanian, Lonny E. Berman, L. D. Chapman
Publikováno v:
Review of Scientific Instruments. 63:595-598
A high‐energy double‐crystal x‐ray monochromator has been constructed for use on the X‐17 beam line at the National Synchrotron Light Source (NSLS). Its design is based on the ‘‘boomerang’’ right angle linkage, and features a fixed ex
Autor:
Herbert D. Zeman, L. D. Chapman, William Thomlinson, R.F. Garrett, T. Oversluizen, D. P. Siddons, V. Stojanoff, Jerome B. Hastings, F.A. Dilmanian, Lonny E. Berman
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :1218-1222
Dual-energy CT imaging of the brain will be performed using synchrotron radiation X-ray beams at about 40 and 80 keV to visualize the altered concentrations of the intermediate-Z elements that occur in brain lesions and atherosclerotic plaques. The m
Publikováno v:
Physical Review Letters. 66:2026-2029
High-resolution x-ray diffraction has resolved the phase-coherence volume of the charge-density wave in electron-irradiated blue bronze. The coherence volume is 3.7{times}10{sup 8} A {sup 3} for defect density {ital n}=0.034 at. %. The coherence leng
Autor:
Elisabeth Schültke, L A Allen, David Fiorella, L D Chapman, R C Beavis, Bernhard H.J. Juurlink, Michael Kelly, Zhong Zhong
Publikováno v:
Physics in medicine and biology. 53(10)
Analyzer-based imaging (ABI) utilizes synchrotron radiation sources to create collimated monochromatic x-rays. In addition to x-ray absorption, this technique uses refraction and scatter rejection to create images. ABI provides dramatically improved