Results 211 to 220 of about 65,394 (259)

Design of a "3.5th generation" photon counting detector CT architecture for higher spatial resolution and decreased ring artifact. [PDF]

Proc SPIE Int Soc Opt Eng
Hsieh SS.
europepmc   +1 more source

Hybrid expert system for robust detection of rare sequence signals: a computational proof-of-concept in host-dominated backgrounds. [PDF]

Front Microbiol
Wang S, Xie L, Yan Z, Ma J, Zhao R.
europepmc   +1 more source

Validity of a simple spillover correction for positron emission tomography measurements in the cerebrospinal fluid region. [PDF]

Radiol Phys Technol
Hayashi E, Hibino S, Mase M.
europepmc   +1 more source

Human occupation of the Afroalpine Bale Mountains at the onset of the African Humid Period. [PDF]

Landsc Ecol
Ossendorf G, Tekelemariam MG, Taipale N, Groos AR, Negash A, Cnuts D, Akçar N, Vockenhuber C, Tariku ZK, Kahsay TH, Rots V, Vogelsang R.   +11 more
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Efficient Monte Carlo based scatter artifact reduction in cone-beam micro-CT

IEEE Transactions on Medical Imaging, 2006
Cupping and streak artifacts caused by the detection of scattered photons may severely degrade the quantitative accuracy of cone-beam X-ray computed tomography (CT) images. In order to overcome this problem, we propose and validate the following iterative scatter artifact reduction scheme.
Wojciech, Zbijewski, Freek J, Beekman
openaire   +4 more sources

Empirical scatter correction (esc): A new CT scatter correction method and its application to metal artifact reduction

IEEE Nuclear Science Symposuim & Medical Imaging Conference, 2010
Scatter artifacts impair the CT image quality and the accuracy of CT values. Especially in cases with metal implants and in wide cone-angle flat detector CT scans, scatter artifact removal can be of great value. Typical scatter correction methods try to estimate scattered radiation and subtract the estimated scatter from the uncorrected data.
E Meyer, C Maas, M Baer, R Raupach, B Schmidt, M Kachelries   +5 more
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A scatter artifact reduction technique in dual-energy computed tomography systems

SPIE Proceedings, 2011
Spectral CT research and development has recently become a hot topic in industry and in academia. Different approaches have been developed for spectral CT imaging. As a result of the capability to generate monochromatic-energy images, beam hardening artifacts have been largely reduced.
Jiahua Fan, Naveen Chandra, Jiang Hsieh
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Reduction of scattering artifact in multislice CT

SPIE Proceedings, 2005
The new multi slice CT scanners are characterized by a wide coverage (collimation) in the longitudinal (z) direction. This large collimation provides large and rapid coverage, it may however introduce artifacts caused by scatter, which are enlarged with collimation. The scattering in the z direction induces artifacts that appear as dark shadows between
I. Sabo-Napadensky, O. Amir
openaire   +1 more source