Results 81 to 90 of about 182,408 (279)

Regularized Spherical Polar Fourier Diffusion MRI with Optimal Dictionary Learning

, 2013
Compressed Sensing (CS) takes advantage of signal sparsity or compressibility and allows superb signal reconstruction from relatively few measurements. Based on CS theory, a suitable dictionary for sparse representation of the signal is required.
Cheng, Jian, Deriche, Rachid, Jiang, Tianzi, Shen, Dinggang, Yap, Pew-Thian   +4 more
core   +1 more source

Association of CDKN2A/B Homozygous Deletion and Extent of Resection With Survival of Patients With WHO CNS5 Grade 4 Astrocytoma

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives WHO grade 4 astrocytomas are associated with poor prognosis, and their prognostic factors remain controversial. This study aimed to identify the prognostic factors and develop a management algorithm for these patients. Methods This study retrospectively included 151 CNS5 adult grade 4 astrocytomas from two medical centers.
Jiawei Cai, Guanglin Zhu, Qiu He, Chen Luo, Lingyun Zhuo, Xingfu Wang, Yiming Chen, Xiaoyong Chen, Wendong You, Jiaheng Xu, Yuanxiang Lin, Dezhi Kang, Shuai Wu, Zanyi Wu   +13 more
wiley   +1 more source

Differentiation of thyroid nodules using diffusion-weighted MRI

Alexandria Journal of Medicine, 2015
Background: Thyroid nodule evaluation is usually done using a fine needle aspiration cytology/biopsy. The aim of this study was to evaluate the role of diffusion weighted imaging to differentiate benign from malignant thyroid nodules.
Lamiss Mohamed Abd el Aziz, Manal Hamisa, Manal Ezzat Badwy   +2 more
doaj   +1 more source

ADC mapping of the aging frontal lobes in mild cognitive impairment [PDF]

, 2018
Normal aging, leukoaraiosis (LA) and vascular disease particularly involve the human frontal lobes. We decided to investigate a population of elderly patients referred for neuroimaging because of progressive minor cognitive deficits but no dementia. They
Assal, F., Delavelle, J., Gold, G., Kelekis, A., Lazeyras, F., Lövblad, K., Mehdizade, A., Palmesino, M., Ruiz, D., Rüfenacht, D., Wetzel, S., Yilmaz, H.   +11 more
core  

Spinal Cord Infarction Versus Idiopathic Transverse Myelitis: Clinical, Radiological, and Functional Insights From a Retrospective Cohort Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Spinal cord infarction (SCI) is a rare but devastating myelopathy, characterized by a high disability rate and an unfavorable prognosis. It has often been underdiagnosed and misdiagnosed as idiopathic transverse myelitis (ITM). This study aimed to describe the clinical features, radiological biomarkers, treatments, and functional ...
Zeqiang Ji, Jianlong Zhang, Yiming Shi, Shiyu Shan, Yang Du, Guangshuo Li, Ying Jin, Yani Zhang, Chuanying Wang, Yijun Lin, Yuhao Guo, Decai Tian, Xingquan Zhao, Tian Song   +13 more
wiley   +1 more source

Sparse Blind Spherical Deconvolution of diffusion weighted MRI

Frontiers in Neuroscience
Diffusion-weighted magnetic resonance imaging provides invaluable insights into in-vivo neurological pathways. However, accurate and robust characterization of white matter fibers microstructure remains challenging.
Clément Fuchs, Quentin Dessain, Quentin Dessain, Nicolas Delinte, Nicolas Delinte, Manon Dausort, Benoît Macq   +6 more
doaj   +1 more source

Effects of nongaussian diffusion on "isotropic diffusion measurements'': an ex-vivo microimaging and simulation study

, 2019
Designing novel diffusion-weighted pulse sequences to probe tissue microstructure beyond the conventional Stejskal-Tanner family is currently of broad interest.
Ianuş, Andrada, Jespersen, Sune Nørhøj, Olesen, Jonas Lynge, Shemesh, Noam   +3 more
core   +1 more source

Meningovascular Inflammation in Cerebral Amyloid Angiopathy‐Related Cortical Superficial Siderosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The role of inflammation in cortical superficial siderosis (cSS), a marker of cerebral amyloid angiopathy (CAA) linked to high hemorrhage risk, is unclear. We examined 15 patients with cSS using 3 T post‐contrast vessel wall MRI (VWI) and CSF analysis.
Philipp Arndt, Eya Khadhraoui, Sebastian J. Müller, Katja Neumann, Hendrik Mattern, Sven G. Meuth, Valentina Perosa, Andreas Charidimou, Stefanie Schreiber   +8 more
wiley   +1 more source

Differentiation of Pancreatic lesions using Diffusion-Weighted MRI

The Egyptian Journal of Radiology and Nuclear Medicine, 2015
The purpose of this study was to evaluate the role of diffusion-weighted imaging (DWI) in diagnosis of pancreatic lesions, to compare diagnostic accuracy of conventional MRI (MRI-c), DWI and diffusion coefficient (ADC) values of lesions.
Mohamad Hamid Abo Warda, Doaa Ibrahim Hasan, Osama Abdelaziz Elteeh   +2 more
doaj   +1 more source

Diffusion-weighted imaging in the evaluation of perianal fistula and abscess

The Egyptian Journal of Radiology and Nuclear Medicine, 2020
Background Perianal fistulas are a common inflammatory condition of the anal canal and perianal tissue. The introduction of MRI in the evaluation of suspected perianal inflammation has greatly improved the surgical outcome of these patients as it allowed
Laila Adel Mohsen, Nasr Mohamed Osman
doaj   +1 more source