نتایج جستجو برای: voxel numbers

تعداد نتایج: 210869  

Journal: :International Journal of Numerical Modelling-electronic Networks Devices and Fields 2022

Wireless power transfer (WPT) systems can be utilized to charge batteries of electrically powered vehicles with a in the order tens kilowatts. The low frequency source currents WPT system emanate magneto-quasistatic fields that induce electric inside body tissues exposed persons. This article compares International Commission on Non-Ionizing Radiation Protection (ICNIRP) recommended 99th percen...

2008
Amanda Coles Andrew Coles Maria Fox Derek Long

Reasoning with domains containing continuous numeric change remains an open challenge in planning. In this paper, we discuss how an established temporal planner, CRIKEY3, can be adapted to plan in domains containing linear continuous numeric change. In particular, we discuss how an LP can be used to scheudule action choices, and how the LPRPG heuristic (hitherto for non-temporal planning) can b...

The Zarankiewicz number z(b; s) is the maximum size of a subgraph of Kb,b which does not contain Ks,s as a subgraph. The two-color bipartite Ramsey number b(s, t) is the smallest integer b such that any coloring of the edges of Kb,b with two colors contains a Ks,s in the rst color or a Kt,t in the second color.In this work, we design and exploit a computational method for bounding and computing...

2017
Xue Bai Ashley D. Harris Tao Gong Nicolaas A. J. Puts Guangbin Wang Michael Schär Peter B. Barker Richard A. E. Edden

The purpose of the present study was to assess the reproducibility of voxel placement for GABA-edited MRS. GABA-edited MRS data were acquired in 13 healthy volunteers from (3 cm)3 voxel; and within the same session a second acquisition was independently prescribed. A three-dimensional voxel mask image was reconstructed in T1-image-space using the SVMask tool (in house software). Reproducibility...

Alireza Bozorgy Behrooz Rafiei Kavoos Firouznia Khodarahm Pahlevan Majid Shakiba Masumeh Fouladi Mohammad Hossein Harirchian Morteza Bakhtiary Nader Riyahi-Alam,

Introduction: Multiple sclerosis (MS) is characterized by lesions in the white matter (WM) of the central nervous system. Magnetic resonance imaging is the most specific and sensitive method for diagnosis of multiple sclerosis. However, the ability of conventional MRI to show histopathologic heterogeneity of MS lesions is insufficient. Quantitative magnetization transfer imaging (qMTI) is a rel...

Alireza Emami Ardekani Faraz Kalantari, Hossein Rajabi, Mohsen Saghari

  Introduction: Monte Carlo (MC) is the most common method for simulating virtual SPECT projections. It is useful for optimizing procedures, evaluating correction algorithms and more recently image reconstruction as a forward projector in iterative algorithms; however, the main drawback of MC is its long run time. We introduced a model based method considering the eff...

Introduction: While the necessity of replacing voxels with blobs in conventional tomographic reconstruction based upon line-integrals is clear, it is not however well-investigated in plane- integral-based reconstruction. The problem is more challenging in convergent-plane projection reconstruction. In this work, we are aiming at utilizing blobs as alternative to voxels. <stron...

Journal: :Neuroscience and Neuroeconomics 2016

Journal: :AJNR. American journal of neuroradiology 2000
P E Ricci A Pitt P J Keller S W Coons J E Heiserman

BACKGROUND AND PURPOSE Single-voxel MR spectroscopy is a widely used tool for evaluating brain tumors. Although extensive data are available on the MR spectral appearance of tumors, less is known about the effect of voxel position on the accuracy of single-voxel MR spectroscopy findings. The purpose of this study was to test the hypothesis that the accuracy of single-voxel MR spectroscopy in th...

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