Effect of Diffusion Time on Diffusion Kurtosis in Neural Tissues
نویسندگان
چکیده
E. S. Hui, S. H. Fung, and E. X. Wu Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong, Hong Kong, Department of Radiology Research, The Methodist Hospital Research Institute, Houston, Texas, United States, Department of Radiology, Weill Medical College of Cornell University, New York, New York, United States, Department of Electrical & Electronic Engineering, The University of Hong Kong, Hong Kong, Hong Kong
منابع مشابه
Towards better MR characterization of neural tissues using directional diffusion kurtosis analysis
MR diffusion kurtosis imaging (DKI) was proposed recently to study the deviation of water diffusion from Gaussian distribution. Mean kurtosis, the directionally averaged kurtosis, has been shown to be useful in assessing pathophysiological changes, thus yielding another dimension of information to characterize water diffusion in biological tissues. In this study, orthogonal transformation of th...
متن کاملDoes diffusion kurtosis imaging lead to better neural tissue characterization? A rodent brain maturation study
Diffusion kurtosis imaging (DKI) can be used to estimate excess kurtosis, which is a dimensionless measure for the deviation of water diffusion profile from Gaussian distribution. Several recent studies have applied DKI to probe the restricted water diffusion in biological tissues. The directional analysis has also been developed to obtain the directionally specific kurtosis. However, these stu...
متن کاملParametric Mapping of Brain Tissues from Diffusion Kurtosis Tensor
Diffusion kurtosis imaging (DKI) is a new diffusion magnetic resonance imaging (MRI) technique to go beyond the shortages of conventional diffusion tensor imaging (DTI) from the assumption that water diffuse in biological tissue is Gaussian. Kurtosis is used to measure the deviation of water diffusion from Gaussian model, which is called non-Gaussian, in DKI. However, the high-order kurtosis te...
متن کامل6633 Diffusion Kurtosis Imaging ( DKI ) Reconstruction - Linear or Non - Linear ?
Introduction: Diffusion Kurtosis Imaging (DKI) which measures the non-Gaussian behavior in diffusion has shown great potential as being a more sensitive marker in characterizing neural tissues compared to conventional DTI. Processing for DKI originally used nonlinear least squares (NLS) methods which were inefficient and processing time of one hour on a fast computer was not unusual . Later, fa...
متن کاملRobust Estimation of Kurtosis and Diffusion Tensors in Diffusional Kurtosis Imaging
Diffusion of water molecules in biological tissues is conventionally quantified via diffusion tensor imaging (DTI) [1]. DTI enables a Gaussian approximation to the probability distribution governing the random displacement of water molecules. In some circumstances of great interest, however, the displacement probability distribution can deviate considerably from a Gaussian form. Diffusional kur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009