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检索条件"主题词=Reconstruction Algorithms"
6415 条 记 录,以下是91-100 订阅
排序:
Comparison of reconstruction algorithms to extend CT reconstruction field-of-view
Comparison of reconstruction algorithms to extend CT reconst...
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IEEE Symposium on Nuclear Science (NSS/MIC)
作者: Baojun Li Jiang Hsieh The Applied Science Laboratory GE Healthcare Systems Waukesha WI USA
This paper evaluates the impact of reconstruction algorithms to extend CT reconstruction field-of-view (DFOV) on radiation dose calculation for oncology treatment planning. Three recon algorithms for extending DFOV ar... 详细信息
来源: 评论
Monotonic iterative reconstruction algorithms for targeted reconstruction in emission and transmission computed tomography
Monotonic iterative reconstruction algorithms for targeted r...
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IEEE Symposium on Nuclear Science (NSS/MIC)
作者: Patrick J. La Riviere Department of Radiology University of Chicago Chicago IL USA
Targeted reconstruction is reconstruction of a portion of an object, even when sufficient data are available to reconstruct the entire object. It is used in CT to zoom in on a region using smaller pixels without the b... 详细信息
来源: 评论
Iterative reconstruction algorithms in optical tomography in frequency domain case
Iterative reconstruction algorithms in optical tomography in...
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International Forum on Strategic Technology, IFOST
作者: A.N. Bondarenko D.N. Ivanov NSTU Novosibirsk Russia
We present a review of methods for the forward and inverse problems in optical tomography. We limit ourselves to the highly scattering case found in applications in medical imaging, and to the problem of absorption an... 详细信息
来源: 评论
Noise propagation in iterative reconstruction algorithms with line searches
Noise propagation in iterative reconstruction algorithms wit...
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IEEE Symposium on Nuclear Science (NSS/MIC)
作者: J. Qi Department of Nuclear Medicine and Functional Imaging Lawrence Berkeley National Laboratory Berkeley CA USA
In this paper we analyze the propagation of noise in iterative image reconstruction algorithms. We derive theoretical expressions for the general form of preconditioned gradient algorithms with line searches. The resu... 详细信息
来源: 评论
SPARSE SPECTRAL FACTORIZATION: UNICITY AND reconstruction algorithms
SPARSE SPECTRAL FACTORIZATION: UNICITY AND RECONSTRUCTION AL...
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IEEE International Conference on Acoustics, Speech and Signal Processing
作者: Yue M. Lu Martin Vetterli School of Engineering and Applied Sciences Harvard University Cambridge MA USA School of Computer and Communication Sciences Ecole Polytechnique Fédérale de Lausanne Lausanne Switzerland
Spectral factorization is a classical tool in signal processing and communications. It also plays a critical role in X-ray crystallography, in the context of phase retrieval. In this work, we study the problem of spar... 详细信息
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Helical and axial cone beam filtered backprojection (CB-FBP) reconstruction algorithms using a general window function
Helical and axial cone beam filtered backprojection (CB-FBP)...
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IEEE Symposium on Nuclear Science (NSS/MIC)
作者: Xiangyang Tang Jiang Hsie R.A. Nilsen S.M. Mcolash Applied Science Lab GE Healthcare Technologies Waukesha WI USA Appl. Sci. Lab. GE Healthcare Technol. Waukesha WI USA GE Healthcare Technologies Functional and CT Engineering Waukesha WI USA
A window function is derived for cone beam reconstruction using filtered backprojection (CB-FBP) algorithms under both helical and circular source trajectories. The window function can be conceived as a generalization... 详细信息
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Improvement of reconstruction algorithms in digital holography
Improvement of reconstruction algorithms in digital holograp...
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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)
作者: Yizhuo Zhang Dayong Wang Changgeng Liu Yuhong Wan Zhuqing Jiang College of Applied Sciences Beijing University of Technology Beijing China
Improved reconstruction algorithms based on the cyclical convolution are proposed. Comparing with traditional ones, the reconstruction pixel resolution and pixel quantity is fully controlled which is awfully required ... 详细信息
来源: 评论
The importance of preconditioners in fast Poisson-based iterative reconstruction algorithms for SPECT
The importance of preconditioners in fast Poisson-based iter...
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IEEE Symposium on Nuclear Science (NSS/MIC)
作者: D.S. Lalush M.W. Tsui Department of Biomedical Engineering North Carolina State University Chapel Hill USA Department of Radiology North Carolina State University Chapel Hill USA
We study the effects of different preconditioners on Poisson-based iterative reconstruction algorithms. Preconditioners are linear transformations that map the image solution space for the reconstruction problem into ... 详细信息
来源: 评论
Dynamic PET reconstruction algorithms using empirical mode decomposition regularisation
Dynamic PET reconstruction algorithms using empirical mode d...
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IEEE International Symposium on Biomedical Imaging
作者: Andrew McLennan Michael Brady Wolfson Medical Vision Laboratory University of Oxford UK
Dynamic PET enables quantitative analysis of in-vivo metabolic activity. Commonly, each image in a temporal sequence is reconstructed independently using standard methods developed for static *** present reconstructio... 详细信息
来源: 评论
Difference equation reconstruction algorithms based on generalized least square method
Difference equation reconstruction algorithms based on gener...
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International Conference on Actual Problems of Electronic Instrument Engineering (APEIE)
作者: A.S. Anisimov V.T. Kononov D.S. Khudyakov Novosibirskij gosudarstvennyj tehniceskij universitet Novosibirsk RU
The possibilities and singularities of the use of the maximum likelihood method, for an improvement in the estimation of denominator polynomial factors at reconstruction of object discrete transfer function on noisy e... 详细信息
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