Raafat, Tarek Ahmed Kaddah, Randa Osama Bokhary, Lobna Mohamed Sayed, Hend Ali Awad, Ahmed Sayed
Published in
Egyptian Journal of Radiology and Nuclear Medicine
BackgroundThe most effective treatment for osteosarcoma is neoadjuvant chemotherapy along with surgical resection of the tumor. The prognosis significantly correlates with the degree of tumor necrosis following preoperative chemotherapy. The tumor necrosis will result in loss of the cell membrane integrity and expansion of the extracellular diffusi...
Jallais, Maëliss Coelho Rodrigues, Pedro Luiz Gramfort, Alexandre Wassermann, Demian
Effective characterisation of the brain grey matter cytoarchitecture with quantitative sensitivity to soma density and volume remains an unsolved challenge in diffusion MRI (dMRI). Solving the problem of relating the dMRI signal with cytoarchitectural characteristics calls for the definition of a mathematical model that describes brain tissue via a...
Qin, Yu Liu, Zhiwen Liu, Chenghao Li, Yuxing Zeng, Xiangzhu Ye, Chuyang
Published in
Medical image analysis
Diffusion magnetic resonance imaging (dMRI) provides a noninvasive method for measuring brain tissue microstructure. q-Space deep learning(q-DL) methods have been developed to accurately estimate tissue microstructure from dMRI scans acquired with a reduced number of diffusion gradients. In these methods, deep networks are trained to learn the mapp...
Guevara Olivares, Miguel
The study of superficial white matter (SWM) has often been left aside, mainly because of its high variability. Higher quality acquisition methods and the development of new analysis tools have facilitated the study of SWM from diffusion MRI and tractography. Brain connectivity and cortical folding pattern must be strongly related, especially for sh...
Zidan, Mohamed Saad, Shimaa Ali Abo Elhamd, Eman Galal, Hosam Eldin Elkady, Reem
Published in
Egyptian Journal of Radiology and Nuclear Medicine
BackgroundAsymmetric breast density is a potentially perplexing finding; it may be due to normal hormonal variation of the parenchymal pattern and summation artifact or it may indicate an underlying true pathology. The current study aimed to identify the role of diffusion-weighted imaging (DWI) and the apparent diffusion coefficient (ADC) values in...
Braeckman, Kim Descamps, Benedicte Vanhove, Christian Caeyenberghs, Karen
Published in
Brain imaging and behavior
Traumatic brain injury (TBI) is a major cause of long-term cognitive deficits, even in mild TBI patients. Computerized cognitive training can help alleviate complaints and improve daily life functioning of TBI patients. However, the underlying biological mechanisms of cognitive training in TBI are not fully understood. In the present study, we util...
Bi, Qiuhui Wang, Wenxiao Niu, Na Li, He Wang, Yezhou Huang, Weijie Chen, Kewei Xu, Kai Zhang, Junying Chen, Yaojing
...
Published in
NeuroImage
Normal aging is accompanied by structural degeneration and glucose hypometabolism in the human brain. However, the relationship between structural network disconnections and hypometabolism in normal aging remains largely unknown. In the present study, by combining MRI and PET techniques, we investigated the metabolic mechanism of the structural bra...
Mitsuya, Koichi Nakasu, Yoko Deguchi, Shoichi Shirata, Kensei Asakura, Koiku Nakashima, Kazuaki Endo, Masahiro Takahashi, Toshiaki Hayashi, Nakamasa
Published in
Cancer Imaging
BackgroundThe incidence of leptomeningeal metastasis (LM) is underestimated because of its non-specific signs and the low sensitivity of clinical diagnostic modalities. Cerebrospinal magnetic resonance (MR) imaging with and without contrast enhancement (CE) is a gold standard for the neuroradiological assessment of patients with suspected LM. Previ...
Isaac Tseng, Wen-Yih Hsu, Yung-Chin Chen, Chang-Le Kang, Yun-Jing Kao, Te-Wei Chen, Pin-Yu Waiter, Gordon D
Published in
Neurobiology of aging
White matter fiber tracts demonstrate heterogeneous vulnerabilities to aging effects. Here, we estimated age-related differences in tract properties using UK Biobank diffusion magnetic resonance imaging data of 7167 47- to 76-year-old neurologically healthy people (3368 men and 3799 women). Tract properties in terms of generalized fractional anisot...
Wen, Qiuting Risacher, Shannon L Xie, Linhui Li, Junjie Harezlak, Jaroslaw Farlow, Martin R Unverzagt, Frederick W Gao, Sujuan Apostolova, Liana G Saykin, Andrew J
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Published in
NeuroImage
Progressive accumulation of tau neurofibrillary tangles in the brain is a defining pathologic feature of Alzheimer's disease (AD). Tau pathology exhibits a predictable spatiotemporal spreading pattern, but the underlying mechanisms of this spread are poorly understood. Although AD is conventionally considered a disease of the gray matter, it is als...
