White matter abnormalities in children and adolescents with temporal lobe epilepsy.

abstract：PURPOSE:This study aimed to further investigate the effects of agmatine on brain edema in the rats with middle cerebral artery occlusion (MCAO) injury using magnetic resonance imaging (MRI) monitoring and biochemical and histopathologic evaluation. MATERIALS AND METHODS:Following surgical induction of MCAO for 90min, ...

journal_title：Magnetic resonance imaging

authors： Huang YC,Tzeng WS,Wang CC,Cheng BC,Chang YK,Chen HH,Lin PC,Huang TY,Chuang TJ,Lin JW,Chang CP

更新日期：2013-09-01 00:00:00

abstract：:An NMR technique is described which allows the observation of ionic charge carriers moving in the electric field within a porous system saturated with electrolyte solution. This method, which was recently developed in our laboratory, gives experimental access to the study of electric transport in disordered media on a...

journal_title：Magnetic resonance imaging

authors： Holz M,Heil SR,Schwab IA

更新日期：2001-04-01 00:00:00

abstract：:A new approach is introduced for non-rigid registration of a pair of magnetic resonance images (MRI). It is a generalization of the demons algorithm with low computational cost, based on local information augmentation (by integrating multiple images) and balanced implementation. Specifically, a single deformation that...

journal_title：Magnetic resonance imaging

authors： Mesin L

更新日期：2020-12-01 00:00:00

abstract：PURPOSE:To characterize the intracranial vascular features extracted from time of flight (TOF) images and their changes from baseline to follow-up in patients undergoing carotid revascularization, using arterial spin labeling (ASL) cerebral blood flow (CBF) measurement as a reference. METHODS:In this retrospective stu...

journal_title：Magnetic resonance imaging

authors： Chen Z,Chen L,Shirakawa M,Liu W,Ortega D,Chen J,Balu N,Trouard T,Hatsukami TS,Zhou W,Yuan C

更新日期：2021-01-01 00:00:00

abstract：:The application of MRI-visible paramagnetic tracers to reveal in vivo connectivity can provide important subject-specific information for multisite, multielectrode intracortical recordings in combined behavioral and physiology experiments. To establish the use of such tracers in the nonhuman primate, we recently compa...

journal_title：Magnetic resonance imaging

authors： Murayama Y,Weber B,Saleem KS,Augath M,Logothetis NK

更新日期：2006-05-01 00:00:00

abstract：:Diffusion in the extracellular and intracellular spaces (ECS and ICS, respectively) was evaluated in excised spinal cords, before and after cell swelling induced by glutamate, by high b-value q-space diffusion MR of specific markers and water. The signal decays of deuterated tetramethylammonium (TMA-d(12)) chloride, a...

journal_title：Magnetic resonance imaging

authors： Biton IE,Mayk A,Assaf Y,Cohen Y

更新日期：2004-06-01 00:00:00

abstract：:Liver fibrosis determines the functional liver reserve. Several studies have reported that the apparent diffusion coefficient (ADC) values of diffusion-weighted magnetic resonance imaging (DW-MRI) can assess liver fibrosis. We investigated whether DW-MRI predicts postoperative hepatic insufficiency and liver fibrosis ...

journal_title：Magnetic resonance imaging

authors： Kim SU,Kim YC,Choi JS,Kim KS,Choi GH,Choi JS,Park JY,Kim DY,Ahn SH,Choi EH,Park YN,Chon CY,Han KH,Kim MJ

更新日期：2010-07-01 00:00:00

abstract：:The effects of motion in two-dimensional Fourier transform imaging (2DFT) are considered. Specific calculations describing the case of periodic motion are presented. The results predict the commonly seen artifact of image replication, sometimes referred to as ghosting. Expressions for both position and amplitude of th...

journal_title：Magnetic resonance imaging

authors： Haacke EM,Patrick JL

更新日期：1986-01-01 00:00:00

abstract：OBJECTIVE:This study aims to evaluate the applicability of using single-shot and multi-shot segmented diffusion-weighted imaging (DWI) techniques to support biopsy target localization in a cohort of targeted MRI-guided prostate biopsy patients. MATERIALS AND METHODS:Single-shot echo-planar diffusion-weighted imaging (...

journal_title：Magnetic resonance imaging

authors： Fedorov A,Tuncali K,Panych LP,Fairhurst J,Hassanzadeh E,Seethamraju RT,Tempany CM,Maier SE

更新日期：2016-10-01 00:00:00

abstract：:Balanced steady-state free precession (SSFP) sequences use fully re-focussed gradient waveforms to achieve a high signal and useful image contrast in short scan times. Despite these strengths, the clinical feasibility of balanced SSFP is still limited both by bright fat signal and by the signal voids that result from ...

journal_title：Magnetic resonance imaging

authors： Hargreaves BA,Bangerter NK,Shimakawa A,Vasanawala SS,Brittain JH,Nishimura DG

更新日期：2006-02-01 00:00:00

abstract：:A single-sided mobile NMR apparatus with a small Halbach magnet was constructed for the first time. It is lightweight, compact and exhibits good sensitivity. The weight of the device is only 2 kg, and the NMR signal of the pencil eraser block can be detected in one shot using the device. This study describes the chara...

journal_title：Magnetic resonance imaging

authors： Chang WH,Chen JH,Hwang LP

更新日期：2006-10-01 00:00:00

abstract：:Increasing scientific interest in the zebrafish as a model organism across a range of biomedical and biological research areas raises the need for the development of in vivo imaging tools appropriate to this subject. Development of the embryonic and early stage forms of the subject can currently be assessed using opti...

journal_title：Magnetic resonance imaging

authors： Merrifield GD,Mullin J,Gallagher L,Tucker C,Jansen MA,Denvir M,Holmes WM

更新日期：2017-04-01 00:00:00

abstract：:An understanding of the nucleation and growth mechanism of methane hydrate in porous space is essential for exploitation and application of hydrates, but the mechanism is yet to be clarified. Magnetic resonance imaging (MRI) was employed to visually analyze the spatial and temporal formation behavior of methane hydrat...

journal_title：Magnetic resonance imaging

authors： Zhang L,Sun L,Sun M,Lv X,Dong H,Miao Y,Yang L,Song Y,Zhao J

更新日期：2019-09-01 00:00:00

abstract：INTRODUCTION:Compared to standard arterial-only first-pass MR-angiography (FPMRA), imaging during the equilibrium phase of a blood pool contrast agent (steady state) has been shown to provide higher image quality and better stenosis grading. Homogenous Dixon fat-suppression promises to increase contrast by suppression ...

journal_title：Magnetic resonance imaging

authors： Homsi R,Gieseke J,Kukuk GM,Träber F,Willinek WA,Schild HH,Hadizadeh DR

更新日期：2015-11-01 00:00:00

abstract：:In this study, magnetic resonance imaging (MRI) was used to dynamically visualize the diffusion process of CO2 in porous media saturated with liquid hydrocarbon. Based on the assumption of semi-infinite media, effective CO2 diffusivity was obtained directly by the nonlinear fitting of one MR profile during the diffusi...

journal_title：Magnetic resonance imaging

authors： Zhao Y,Chen J,Yang M,Liu Y,Song Y

更新日期：2016-05-01 00:00:00

abstract：:Laplace inversion has been widely used in analyzing nuclear magnetic resonance data to obtain a spectrum of decay time constant, such as the T(2) spectrum. However, due to the ill-conditioned nature of such inversion, it is difficult to determine the reliability and error of the resulting spectrum. This article descri...

journal_title：Magnetic resonance imaging

authors： Song YQ

更新日期：2007-05-01 00:00:00

abstract：:1H Magnetic resonance imaging and 31P magnetic resonance spectroscopy (MRS) have been carried out in experimental rodent filariasis, i.e., Acanthocheilonema viteae infection in the rodent host, Mastomys coucha. The T2-weighted image of the infected host shows fine hyperintense thread like structures of adult filariid ...

journal_title：Magnetic resonance imaging

authors： Shukla-Dave A,Fatma N,Roy R,Srivastava S,Chatterjee RK,Govindaraju V,Viswanathan AK,Raghunathan P

更新日期：1997-01-01 00:00:00

abstract：:The goal of this study was to determine whether presurgical metabolite levels measured by 3D MR Spectroscopic Imaging (MRSI) can accurately detect viable cancer within human brain tumor masses. A total of 31 patients (33 exams, 39 pathology correlations) with brain tumors were studied prior to surgical biopsy and/or r...

journal_title：Magnetic resonance imaging

authors： Vigneron D,Bollen A,McDermott M,Wald L,Day M,Moyher-Noworolski S,Henry R,Chang S,Berger M,Dillon W,Nelson S

更新日期：2001-01-01 00:00:00

abstract：:Articular cartilage thickness is of relevance in various fields in diagnostics and biomedical research. In view of recent improvements of MR cartilage imaging a computational method has been developed for three-dimensional determination of cartilage thickness from tomographic datasets. A correction algorithm that comp...

journal_title：Magnetic resonance imaging

authors： Lösch A,Eckstein F,Haubner M,Englmeier KH

更新日期：1997-01-01 00:00:00

abstract：:Functional MR imaging of the alert, behaving monkey is being used more and more often to detect activation patterns and guide electrophysiological research investigating the neural basis of behavior. Several labs have reported fMRI data from the awake monkey, but none of them has studied and systematically corrected t...

journal_title：Magnetic resonance imaging

authors： Pfeuffer J,Shmuel A,Keliris GA,Steudel T,Merkle H,Logothetis NK

更新日期：2007-07-01 00:00:00

abstract：:The physiological parameters measured in the tracer kinetics modeling of data from a dynamic contrast-enhanced magnetic resonance (MR) breast exam (blood flow-extraction fraction product [FE], volume of the extracellular extravascular space [Ve], and blood volume [Vb]) may enable non-invasive diagnosis of breast cance...

journal_title：Magnetic resonance imaging

authors： Henderson E,Rutt BK,Lee TY

更新日期：1998-11-01 00:00:00

abstract：:Many informatics tools have emerged to process the voluminous and complex data generated by functional magnetic resonance imaging (fMRI). The interpretation of fMRI exams is largely determined by these tools. However, their performance is hard to evaluate because there is no independent means of calibration. A novel f...

journal_title：Magnetic resonance imaging

authors： Cheng H,Zhao Q,Duensing GR,Edelstein WA,Spencer D,Browne N,Saylor C,Limkeman M

更新日期：2006-04-01 00:00:00

abstract：:We report initial NMR studies of continuous flow laser-polarized xenon gas, both in unrestricted tubing, and in a model porous media. The study uses Pulsed Gradient Spin Echo-based techniques in the gas-phase, with the aim of obtaining more sophisticated information than just translational self-diffusion coefficients....

journal_title：Magnetic resonance imaging

authors： Mair RW,Wang R,Rosen MS,Candela D,Cory DG,Walsworth RL

更新日期：2003-04-01 00:00:00

abstract：:Dynamic and static gadolinium-diethylenetriaminepentaacetic acid(Gd-DTPA)-enhanced magnetic resonance imaging (MRI) were evaluated as measures of joint inflammation in arthritis, by a comparison with macroscopic and microscopic signs of synovitis. Furthermore, the importance of the size of the evaluated synovial areas...

journal_title：Magnetic resonance imaging

authors： Ostergaard M,Stoltenberg M,Løvgreen-Nielsen P,Volck B,Sonne-Holm S,Lorenzen I

更新日期：1998-09-01 00:00:00

abstract：:There is increasing interest in imaging short T2 species which show little or no signal with conventional magnetic resonance (MR) pulse sequences. In this paper, we describe the use of three-dimensional ultrashort echo time (3D UTE) sequences with TEs down to 8 μs for imaging of these species. Image contrast was gener...

journal_title：Magnetic resonance imaging

authors： Du J,Bydder M,Takahashi AM,Carl M,Chung CB,Bydder GM

更新日期：2011-05-01 00:00:00

abstract：:Diffusion-weighted imaging (DWI) is a relatively new magnetic resonance imaging (MRI) technique that can be used to probe the microenvironment of water. Contrast in DWI depends on properties different from traditional T1 and T2 contrast, and is derived form the translational motion of water molecules. Since it is reas...

journal_title：Magnetic resonance imaging

authors： Helpern JA,Huang N

更新日期：1995-01-01 00:00:00

abstract：:T2-weighted images are considered the most sensitive for lesion detection at high field; however, long imaging time is problematic. Accordingly, the authors compared four breath-hold T2 or T2* weighted sequences comprising T2*-weighted FLASH, T2*-weighted PSIF, T2-weighted rapid spin echo (RASE), and T2-weighted Turbo...

journal_title：Magnetic resonance imaging

authors： Simm FC,Semelka RC,Recht M,Deimling M,Lenz G,Laub GA

更新日期：1992-01-01 00:00:00

abstract：PURPOSE:While PRESS is often employed to measure glutamate concentrations, MEGA-PRESS enables simultaneous Glx (glutamate and glutamine) and GABA measurements. This study aimed to compare validation, repeatability, and concordance of different approaches for glutamate quantification at 3T to aid future studies in their...

journal_title：Magnetic resonance imaging

authors： van Veenendaal TM,Backes WH,van Bussel FCG,Edden RAE,Puts NAJ,Aldenkamp AP,Jansen JFA

更新日期：2018-05-01 00:00:00

abstract：:A phase encoding method for imaging of chemical shift or magnetic field distributions is described. The method utilizes the spin-echo principle and the time period between signal collection and excitation is constant but the time period between excitation and the 180 degrees pulse is varied by constant steps. The meth...

journal_title：Magnetic resonance imaging

authors： Sepponen RE

更新日期：1985-01-01 00:00:00

abstract：:We studied 26 cases of abdominal aortic aneurysm with magnetic resonance imaging (MRI), computed tomography (CT), ultrasonography (US), and angiography. Data acquired were compared to those obtained at surgery. Diameter of the aneurysm was correctly defined in all cases by CT and MRI, while angiography underestimated ...

journal_title：Magnetic resonance imaging

authors： Pavone P,Di Cesare E,Di Renzi P,Marsili L,Ventura M,Spartera C,Passariello R

更新日期：1990-01-01 00:00:00