نتایج جستجو برای: diffusion weighted imaging mri

تعداد نتایج: 727161  

Journal: :NMR in biomedicine 2016
P Porcari M E Hegi H Lei M-F Hamou I Vassallo S Capuani R Gruetter V Mlynarik

Glioma models have provided important insights into human brain cancers. Among the investigative tools, MRI has allowed their characterization and diagnosis. In this study, we investigated whether diffusion MRI might be a useful technique for early detection and characterization of slow-growing and diffuse infiltrative gliomas, such as the proposed new models, LN-2669GS and LN-2540GS glioma sph...

Journal: :Stroke 2012
Jerry S Cheung Enfeng Wang Eng H Lo Phillip Zhe Sun

BACKGROUND AND PURPOSE Ischemic tissue damage is heterogeneous, resulting in complex patterns in the widely used diffusion-weighted MRI. Our study examined the spatiotemporal characteristics of diffusion kurtosis imaging in an animal model of transient middle cerebral artery occlusion. METHODS Adult male Wistar rats (N=18) were subjected to 90 minutes middle cerebral artery occlusion. Multipa...

Journal: :Journal of the neurological sciences 2001
M Cercignani M A Horsfield

Diffusion-weighted (DW) magnetic resonance imaging (MRI) is the only technique that permits a non-invasive in vivo assessment of water molecular diffusion, which reflects tissue configuration at a microscopic level. Therefore, this technique appears to be particularly useful in monitoring brain abnormalities. However, the quantitative measurement of diffusion is not without problems, which may ...

Journal: :Stroke 2007
Thomas Tourdias Vincent Dousset Igor Sibon Eric Pele Patrice Menegon Julien Asselineau Chahin Pachai François Rouanet Philip Robinson Geneviève Chene Jean Marc Orgogozo

BACKGROUND AND PURPOSE In the concept of ischemic penumbra, the volume of salvaged penumbra is considered as the volume of FLAIR normalization on follow-up MRI compared with early diffusion and perfusion abnormalities. Using magnetization transfer imaging, very sensitive to macromolecular disruption, we investigated whether FLAIR normalization was a good marker for tissue full recovery. METHO...

Journal: :European urology focus 2017
Kristina Sandgren Philippe Westerlinck Joakim H Jonsson Lennart Blomqvist Camilla Thellenberg Karlsson Tufve Nyholm Piet Dirix

CONTEXT Local and regional recurrence after radical prostatectomy (RP) can be treated using salvage radiotherapy (SRT). If the recurrence can be delineated on diagnostic imaging, this could allow for increasingly individualized SRT. OBJECTIVE This systematic review aimed at evaluating the evidence regarding the usefulness of positron emission tomography (PET) and magnetic resonance imaging (M...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2007
Nicolas Wiest-Daesslé Sylvain Prima Pierrick Coupé Sean Patrick Morrissey Christian Barillot

Diffusion tensor imaging (DT-MRI) is very sensitive to corrupting noise due to the non linear relationship between the diffusion-weighted image intensities (DW-MRI) and the resulting diffusion tensor. Denoising is a crucial step to increase the quality of the estimated tensor field. This enhanced quality allows for a better quantification and a better image interpretation. The methods proposed ...

2012
Henning Neubauer Laura Evangelista Henner Morbach Hermann Girschick Martina Prelog Herbert Köstler Dietbert Hahn Meinrad Beer

UNLABELLED BACKGROUND MRI has become the mainstay of diagnostic imaging in paediatric rheumatology for lesion detection, differential diagnosis and therapy surveillance. MR imaging of synovitis, in particular, is indispensable for early diagnosis and follow-up in arthritis patients. We used diffusion-weighted MRI (DWI) as a new imaging modality in comparison to standard MRI sequences to stud...

2016
Pietro Valerio Foti Noemi Ognibene Saveria Spadola Rosario Caltabiano Renato Farina Stefano Palmucci Pietro Milone Giovanni Carlo Ettorre

OBJECTIVE We illustrate the magnetic resonance imaging (MRI) features of non-neoplastic tubaric conditions. BACKGROUND A variety of pathologic non-neoplastic conditions may affect the fallopian tubes. Knowledge of their imaging appearance is important for correct diagnosis. With recent advances in MRI, along with conventional MR sequences, diffusion-weighted imaging (DWI) sequences are availa...

2017
Pei-Sen Yao Guo-Rong Chen Huang-Cheng Shang-Guan Qing-Song Lin Xing-Fu Wang Shu-Fa Zheng De-Zhi Kang

Rationale: Intracranial ganglioneuroblastoma represents a rare subtype of primitive neuroectodermal tumor. Here, we report a hippocampal ganglioneuroblastoma and a literature review of cerebral anglioneuroblastoma is carried out. Patient concerns: We report a 16-year-old male patient presenting with absence seizure and high-infiltration hippocampal ganglioneuroblastoma. Interventions: Magnetic ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید