Articles with "kurtosis" as a keyword



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Design and characterization of tissue‐mimicking gel phantoms for diffusion kurtosis imaging

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Published in 2018 at "Medical Physics"

DOI: 10.1002/mp.12907

Abstract: PURPOSE The aim of this work was to create tissue-mimicking gel phantoms appropriate for diffusion kurtosis imaging (DKI) for quality assurance, protocol optimization, and sequence development. METHODS A range of agar, agarose, and polyvinyl alcohol… read more here.

Keywords: diffusion; tissue mimicking; mimicking gel; kurtosis ... See more keywords
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Diffusional kurtosis imaging in head and neck cancer: On the use of trace‐weighted images to estimate indices of non‐Gaussian water diffusion

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Published in 2018 at "Medical Physics"

DOI: 10.1002/mp.13238

Abstract: PURPOSE While previous studies have demonstrated the feasibility and potential usefulness of quantitative non-Gaussian diffusional kurtosis imaging (DKI) of the brain, more recent research has focused on oncological application of DKI in various body regions… read more here.

Keywords: diffusion; diffusional kurtosis; kurtosis; weighted images ... See more keywords
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Evaluating kurtosis‐based diffusion MRI tissue models for white matter with fiber ball imaging

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Published in 2017 at "NMR in Biomedicine"

DOI: 10.1002/nbm.3689

Abstract: In order to quantify well‐defined microstructural properties of brain tissue from diffusion MRI (dMRI) data, tissue models are typically employed that relate biological features, such as cell morphology and cell membrane permeability, to the diffusion… read more here.

Keywords: diffusion; tissue models; tissue; kurtosis ... See more keywords
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Precision and accuracy of diffusion kurtosis estimation and the influence of b‐value selection

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Published in 2017 at "NMR in Biomedicine"

DOI: 10.1002/nbm.3777

Abstract: Diffusion kurtosis imaging (DKI) is an extension of diffusion tensor imaging that accounts for leading non‐Gaussian diffusion effects. In DKI studies, a wide range of different gradient strengths (b‐values) is used, which is known to… read more here.

Keywords: estimation; diffusion; error; value ... See more keywords
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Measuring healthy female nulliparous pubovisceral muscle from diffusion kurtosis imaging

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Published in 2022 at "NMR in Biomedicine"

DOI: 10.1002/nbm.4753

Abstract: This study explores the feasibility of using diffusion kurtosis imaging (DKI) in the pelvic floor region and assesses the water diffusivity of the pubovisceral muscle. Twenty‐seven healthy young nulliparous females underwent DKI at 3.0 T… read more here.

Keywords: pubovisceral muscle; diffusion; kurtosis; diffusivity ... See more keywords
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Diffusion Kurtosis as an in vivo Imaging Marker of Early Radiation-Induced Changes in Radiation-Induced Temporal Lobe Necrosis in Nasopharyngeal Carcinoma Patients

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Published in 2017 at "Clinical Neuroradiology"

DOI: 10.1007/s00062-017-0585-9

Abstract: PurposeDiffusion kurtosis imaging (DKI), an extension of the popular diffusion tensor imaging (DTI) model, has been applied in clinical studies of brain tissue changes. We explored the value of DKI for the early detection of… read more here.

Keywords: diffusion; radiation induced; kurtosis; temporal lobe ... See more keywords
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The diagnostic role of diffusional kurtosis imaging in glioma grading and differentiation of gliomas from other intra-axial brain tumours: a systematic review with critical appraisal and meta-analysis

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Published in 2020 at "Neuroradiology"

DOI: 10.1007/s00234-020-02425-9

Abstract: Purpose We aim to illustrate the diagnostic performance of diffusional kurtosis imaging (DKI) in the diagnosis of gliomas. Methods A review protocol was developed according to the (PRISMA-P) checklist, registered in the international prospective register… read more here.

Keywords: gliomas; diffusional kurtosis; kurtosis; differentiation ... See more keywords
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Diffusion kurtosis imaging to assess correlations with clinicopathologic factors for bladder cancer: a comparison between the multi-b value method and the tensor method

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Published in 2018 at "European Radiology"

DOI: 10.1007/s00330-018-5977-y

Abstract: ObjectivesTo assess the efficacy of diffusion kurtosis imaging (DKI) in differentiating low-grade from high-grade tumors and evaluating the aggressiveness of bladder cancer.MethodsFrom January 2017 to July 2017, 35 patients (28 males, 7 females; mean age… read more here.

Keywords: bladder cancer; diffusion; method; kurtosis ... See more keywords
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Diffusion kurtosis imaging differs between primary central nervous system lymphoma and high-grade glioma and is correlated with the diverse nuclear-to-cytoplasmic ratio: a histopathologic, biopsy-based study

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Published in 2019 at "European Radiology"

DOI: 10.1007/s00330-019-06544-7

Abstract: Objectives To determine whether water kurtosis and diffusional metrics derived from diffusional kurtosis imaging (DKI) within primary central nervous system lymphomas (PCNSLs) and high-grade gliomas (HGGs) correlate with cellularity and/or nuclear-to-cytoplasmic (N/C) ratio. Methods Forty-four… read more here.

Keywords: diffusion; central nervous; ratio; primary central ... See more keywords
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Noninvasive evaluation of early diabetic nephropathy using diffusion kurtosis imaging: an experimental study

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Published in 2020 at "European Radiology"

DOI: 10.1007/s00330-020-07322-6

Abstract: Objectives To evaluate the value of renal diffusion kurtosis imaging (DKI) in the diagnosis of early diabetic nephropathy (DN) in a rat model. Materials and methods Forty male Zucker diabetic fatty rats that spontaneously developed… read more here.

Keywords: medulla; kurtosis; diabetic nephropathy; kurtosis imaging ... See more keywords
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Enhancing seismic P phase arrival picking based on wavelet denoising and kurtosis picker

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Published in 2017 at "Journal of Seismology"

DOI: 10.1007/s10950-017-9690-0

Abstract: P phase arrival picking of weak signals is still challenging in seismology. A wavelet denoising is proposed to enhance seismic P phase arrival picking, and the kurtosis picker is applied on the wavelet-denoised signal to… read more here.

Keywords: wavelet; picker; kurtosis; phase arrival ... See more keywords