Results 181 to 190 of about 16,306 (215)

Optimal Experimental Design for Diffusion Kurtosis Imaging

IEEE Transactions on Medical Imaging, 2010
Diffusion kurtosis imaging (DKI) is a new magnetic resonance imaging (MRI) model that describes the non-Gaussian diffusion behavior in tissues. It has recently been shown that DKI parameters, such as the radial or axial kurtosis, are more sensitive to brain physiology changes than the well-known diffusion tensor imaging (DTI) parameters in several ...
Poot, Dirk, den Dekker, Arjan, Achten, E., Verhoye, Marleen, Sijbers, Jan   +4 more
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MR diffusion kurtosis imaging for neural tissue characterization

NMR in Biomedicine, 2010
AbstractIn conventional diffusion tensor imaging (DTI), water diffusion distribution is described as a 2nd‐order three‐dimensional (3D) diffusivity tensor. It assumes that diffusion occurs in a free and unrestricted environment with a Gaussian distribution of diffusion displacement, and consequently that diffusion weighted (DW) signal decays with ...
Wu, EX, Cheung, MM
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Fast diffusion kurtosis imaging in acute ischemic stroke shows mean kurtosis‐diffusivity mismatch

Journal of Neuroimaging, 2022
AbstractBackground and PurposeDiffusion kurtosis imaging (DKI) is an advanced technique more specific to irreversible ischemic injury than conventional diffusion‐weighted imaging (DWI). However, its clinical translation has been limited by a long acquisition time and complex postprocessing.MethodsA fast DKI sequence (3 minutes) was implemented on a 3T ...
Ranliang Hu, Hahnsung Kim, Jinsuh Kim, Jason W. Allen, Phillip Zhe Sun   +4 more
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Gliomas: Diffusion Kurtosis MR Imaging in Grading

Radiology, 2012
To assess the diagnostic accuracy of diffusion kurtosis magnetic resonance imaging parameters in grading gliomas.The institutional review board approved this prospective study, and informed consent was obtained from all patients. Diffusion parameters-mean diffusivity (MD), fractional anisotropy (FA), mean kurtosis, and radial and axial kurtosis-were ...
Sofie, Van Cauter, Jelle, Veraart, Jan, Sijbers, Ronald R, Peeters, Uwe, Himmelreich, Frederik, De Keyzer, Stefaan W, Van Gool, Frank, Van Calenbergh, Steven, De Vleeschouwer, Wim, Van Hecke, Stefan, Sunaert   +10 more
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Diffusion kurtosis imaging in diffuse axonal injury

Voprosy neirokhirurgii imeni N.N. Burdenko, 2019
Diffuse axonal injury (DAI) is one of the most severe traumatic brain injuries. The availability of neuroimaging biomarkers for monitoring expansion of traumatic brain injury in vivo is a topical issue.To evaluate novel neuroimaging biomarkers for monitoring brain injury using diffusion kurtosis imaging (DKI) in patients with severe diffuse axonal ...
N E, Zakharova, A A, Potapov, I N, Pronin, G V, Danilov, E V, Aleksandrova, L M, Fadeeva, E L, Pogosbekyan, A I, Batalov, S A, Goryaynov   +8 more
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Diffusion Kurtosis Imaging

2016
Diffusion kurtosis imaging (DKI) is a recent imaging method that probes the diffusion of water molecules. Whereas diffusion tensor imaging (DTI) models the diffusion as a 3D Gaussian function, DKI takes it one step further by additionally quantifying the degree of non-Gaussian diffusion.
Veraart, Jelle, Sijbers, Jan
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Constrained diffusion kurtosis imaging using ternary quartics & MLE

Magnetic Resonance in Medicine, 2013
PurposeDiffusion kurtosis imaging (DKI) is a recent improvement over diffusion tensor imaging that characterizes tissue by quantifying non‐gaussian diffusion using a 3D fourth‐orderkurtosistensor. DKI needs to consider three constraints to be physically relevant. Further, it can be improved by considering the Rician signal noise model. A DKI estimation
Ghosh, Aurobrata, Milne, Tristan, Deriche, Rachid   +2 more
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Differentiation among parkinsonisms using quantitative diffusion kurtosis imaging

NeuroReport, 2015
Differential diagnoses among Parkinson's disease (PD), multiple system atrophy (MSA), and progressive supranuclear palsy syndrome (PSPS) are often difficult. Hence, we investigated whether diffusion kurtosis imaging (DKI) could detect pathological changes that occur in these disorders and be used to differentiate between such patients.
Kenji, Ito, Makoto, Sasaki, Chigumi, Ohtsuka, Suguru, Yokosawa, Taisuke, Harada, Ikuko, Uwano, Fumio, Yamashita, Satomi, Higuchi, Yasuo, Terayama   +8 more
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Parkinson Disease: Diagnostic Utility of Diffusion Kurtosis Imaging

Radiology, 2011
To examine the usefulness of diffusion kurtosis imaging for the diagnosis of Parkinson disease (PD).Examinations were performed with the understanding and written consent of each subject, with local ethics committee approval, and in compliance with national legislation and Declaration of Helsinki guidelines.
Jiun-Jie, Wang, Wey-Yil, Lin, Chin-Song, Lu, Yi-Hsin, Weng, Shu-Hang, Ng, Chi-Hong, Wang, Hao-Li, Liu, Ren-Hsiang, Hsieh, Yung-Liang, Wan, Yau-Yau, Wai   +9 more
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Diffusion Kurtosis Imaging in the Assessment of Cervical Carcinoma

Academic Radiology, 2020
To evaluate the additional value of diffusion kurtosis imaging (DKI) in the characterization of cervical carcinoma.Seventy-five patients (56.9 ± 13.4 years) with histologic-confirmed cervical carcinoma were included. Diffusion-weighted imaging (DWI) was acquired on a 3T MRI with five b values (0, 500, 800, 1000, and 1500 s/mm2).
Mandi, Wang, Jose A U, Perucho, Queenie, Chan, Jianqing, Sun, Philip, Ip, Ka Yu, Tse, Elaine Y P, Lee   +6 more
openaire   +2 more sources