Results 211 to 220 of about 288,028 (263)
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Physics in Medicine and Biology, 2006
We give an overview of the role of Physics in Medicine and Biology in the development of tomographic reconstruction algorithms. We focus on imaging modalities involving ionizing radiation, CT, PET and SPECT, and cover a wide spectrum of reconstruction problems, starting with classical 2D tomography in the 1970s up to 4D and 5D problems involving ...
Defrise, Michel, Gullberg, Grant
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We give an overview of the role of Physics in Medicine and Biology in the development of tomographic reconstruction algorithms. We focus on imaging modalities involving ionizing radiation, CT, PET and SPECT, and cover a wide spectrum of reconstruction problems, starting with classical 2D tomography in the 1970s up to 4D and 5D problems involving ...
Defrise, Michel, Gullberg, Grant
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Weighted microscopic image reconstruction
Discrete Applied Mathematics, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bar-Noy, Amotz +4 more
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Augmented Likelihood Image Reconstruction
IEEE Transactions on Medical Imaging, 2016The presence of high-density objects remains an open problem in medical CT imaging. Data of projections passing through objects of high density, such as metal implants, are dominated by noise and are highly affected by beam hardening and scatter. Reconstructed images become less diagnostically conclusive because of pronounced artifacts that manifest as
Maik, Stille +4 more
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Reconstruction in diffraction imaging
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1989The problem of reconstruction in imaging systems that are modeled using the Helmholtz wave equation (diffraction imaging) is addressed. A spectral analysis of the available diffraction data is presented to help develop algorithms and constraints on a diffraction imaging system's parameters for accurate reconstruction of the desired image.
M, Soumekh, J H, Choi
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Maximum Entropy Image Reconstruction
IEEE Transactions on Computers, 1977Two-dimensional digital image reconstruction is an important imaging process in many of the physical sciences. If the data are insufficient to specify a unique reconstruction, an additional criterion must be introduced, either implicitly or explicitly before the best estimate can be computed. Here we use a principle of maximum entropy, which has proven
Wernecke, Stephen J. +1 more
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Image reconstruction in intravascular photoacoustic imaging
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011Intravascular photoacoustic (IVPA) imaging is a technique for visualizing atherosclerotic plaques with differential composition. Unlike conventional photoacoustic tomography scanning, where the scanning device rotates around the subject, the scanning aperture in IVPA imaging is enclosed within the imaged object.
Yae-lin, Sheu +3 more
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Echo-Planar Image Reconstruction
1998Echo-planar imaging (EPI), introduced by Mansfield in 1977 [1], permits the measurement of an entire magnetic resonance (MR) image in less than 100 ms. After a single excitation an appropriate gradient sequence encodes the magnetization repeatedly, thus filling the whole k-space.
Schmitt, F, Wielopolski, Piotr
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Image reconstruction — a tutorial
Computerized Medical Imaging and Graphics, 2001This paper is written for physicians and presents basic principles of image reconstruction in nuclear medicine. Both analytical and iterative methods are discussed without rigorous mathematics.
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Reconstructed Wavefield Imaging
Proceedings, 2017Summary We propose and implement a novel imaging method, which is referred to as reconstructed wavefield imaging (RWI). The idea of RWI is to solve a partial differential equation (PDE) constrained optimization problem for reconstructing a more reliable source wavefield that satisfies the two-way wave equation and also best fits the recorded data at ...
C. Wang +4 more
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2021
This chapter outlines the fundamentals of several image reconstruction approaches currently in use in X-ray tomography at synchrotron radiation facilities and at industrial X-ray CT scanners, clarifying both their proper use and points of caution in image reconstruction.
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This chapter outlines the fundamentals of several image reconstruction approaches currently in use in X-ray tomography at synchrotron radiation facilities and at industrial X-ray CT scanners, clarifying both their proper use and points of caution in image reconstruction.
openaire +1 more source