A broad line NMR and MRI study of water and water transport in Portland cement pastes.

abstract：PURPOSE:Only a few studies have investigated the brain morphology abnormalities in structural MRI in patients with drug-naïve idiopathic generalized epilepsy (IGE) and mainly focused on brain volume changes. In the present study, we aimed to investigate the changes in three morphologic measurement differences including...

journal_title：Magnetic resonance imaging

authors： Deng DM,Chen LZ,Li YW,Long R,Tang GC,Han FG,Diao XM,Chen HL,Long ZL,Qiu LH

更新日期：2019-09-01 00:00:00

abstract：:Current fast imaging techniques are based on gradient echo sequences with reduced flip angle excitation pulses and very short repetition times TR. Practical T2 values may be of the order of TR or longer. In this situation, a different image contrast can be obtained, depending on details of the sequence. Four essential...

journal_title：Magnetic resonance imaging

authors： van der Meulen P,Groen JP,Tinus AM,Bruntink G

更新日期：1988-07-01 00:00:00

abstract：:Brain vascular damage accumulate in aging and often manifest as white matter hyperintensities (WMHs) on MRI. Despite increased interest in automated methods to segment WMHs, a gold standard has not been achieved and their longitudinal reproducibility has been poorly investigated. The aim of present work is to evaluate...

journal_title：Magnetic resonance imaging

authors： Ribaldi F,Altomare D,Jovicich J,Ferrari C,Picco A,Pizzini FB,Soricelli A,Mega A,Ferretti A,Drevelegas A,Bosch B,Müller BW,Marra C,Cavaliere C,Bartrés-Faz D,Nobili F,Alessandrini F,Barkhof F,Gros-Dagnac H,Ranjeva JP

更新日期：2021-02-01 00:00:00

abstract：:In this contribution, we report results from MRI studies of the propagation of heavy metal ions through columns packed with sandy aquifer materials. Both sorption of low concentrations of heavy metal ions from water flowing through the column and the formation of sorption traces produced from initially localized highe...

journal_title：Magnetic resonance imaging

authors： Nestle N,Baumann T,Wunderlich A,Niessner R

更新日期：2003-04-01 00:00:00

abstract：:Biliary cystadenomas and their malignant counterparts, biliary cystadenocarcinomas, are rare cystic tumors that arise from hepatobiliary epithelium. Ultrasound (US) and computed tomography (CT) are the initial imaging modalities used for the evaluation of biliary cystic tumors, but are not specific. MRI and MRCP, beca...

journal_title：Magnetic resonance imaging

authors： Williams DM,Vitellas KM,Sheafor D

更新日期：2001-11-01 00:00:00

abstract：:A parametric method is proposed to examine the relationship between neuronal activity, measured with event related potentials (ERPs), and the hemodynamic response, observed with functional magnetic resonance imaging (fMRI), during an auditory oddball paradigm. After verifying that the amplitude of the evoked response ...

journal_title：Magnetic resonance imaging

authors： Horovitz SG,Skudlarski P,Gore JC

更新日期：2002-05-01 00:00:00

abstract：:The amplitudes of gradient-echoes produced using static field gradients are sensitive to diffusion of tissue water during the echo evolution time. Gradient-echoes have been used to produce MR images in which image intensity is proportional to the self-diffusion coefficient of water. However, such measurements are subj...

journal_title：Magnetic resonance imaging

authors： Karczmar G,River J,Koretsky AP

更新日期：1995-01-01 00:00:00

abstract：:L-2-Chloropropionic acid (L-CPA) is selectively toxic to rat cerebellar granule cells; necrosis is first observed about 36 hours after administration of L-CPA (750 mg/kg p.o.) becoming more marked by 48 h. Parallel to the onset of cell death an increase in cerebellar water content and sodium concentration has been rep...

journal_title：Magnetic resonance imaging

authors： Williams RE,Prior M,Bachelard HS,Waterton JC,Checkley D,Lock EA

更新日期：2001-02-01 00:00:00

abstract：:The objective of this study was to analyze regional variations of magnetic resonance (MR) relaxation times (T1ρ and T2) in hip joint cartilage of healthy volunteers and subjects with femoral acetabular impingement (FAI). Morphological and quantitative images of the hip joints of 12 healthy volunteers and 9 FAI patient...

journal_title：Magnetic resonance imaging

authors： Subburaj K,Valentinitsch A,Dillon AB,Joseph GB,Li X,Link TM,Vail TP,Majumdar S

更新日期：2013-09-01 00:00:00

abstract：:The evaluation of local muscle recruitment during a specific movement can be done indirectly by measuring changes in local blood flow. Intravoxel incoherent motion perfusion imaging exploits some properties of the magnetic resonance to measure locally microvascular perfusion, and seems ideally suited for this task. We...

journal_title：Magnetic resonance imaging

authors： Nguyen A,Ledoux JB,Omoumi P,Becce F,Forget J,Federau C

更新日期：2017-01-01 00:00:00

abstract：:In pharmacological magnetic resonance imaging (phMRI) with anesthetized animals, there is usually only a single time window to observe the dynamic signal change to an acute drug administration since subsequent drug injections are likely to result in altered response properties (e.g., tolerance). Unlike the block-desig...

journal_title：Magnetic resonance imaging

authors： Lu H,Yang S,Zuo Y,Demny S,Stein EA,Yang Y

更新日期：2008-11-01 00:00:00

abstract：:High density barium sulphate suspension was investigated as an oral contrast on MRI. On 30 consecutive subjects, the stomach (in all cases) and the two first portions of the duodenum (in 21 cases) were filled with the suspension. This oral contrast behaved as a negative contrast, being hypointense on all pulse sequenc...

journal_title：Magnetic resonance imaging

authors： Marti-Bonmati L,Vilar J,Paniagua JC,Talens A

更新日期：1991-01-01 00:00:00

abstract：:The nonhuman primate brain study provides important supplemental means for human brain exploration since the two species share close anatomical and functional similarities. MR diffusion tensor imaging (DTI) in human brain has revealed exquisite details of brain structures especially in the brain white matter. However,...

journal_title：Magnetic resonance imaging

authors： Liu X,Zhu T,Gu T,Zhong J

更新日期：2009-04-01 00:00:00

abstract：:Magnetic resonance imaging (MRI) is a completely noninvasive modality that has shown significant promise for the evaluation of the cardiovascular system. Our imaging technique employed electrocardiographic (ECG) gating, which resulted in well-resolved images of the cardiac structures. Patients and animals with a varie...

journal_title：Magnetic resonance imaging

authors： McNamara MT,Higgins CB

更新日期：1984-01-01 00:00:00

abstract：:Poly(L-glutamic acid) (PGA)-cystamine-[gadolinium (Gd)-DO3A] was prepared in high yield with a high Gd-DO3A conjugation efficiency. Approximately 55% of the carboxylic groups in PGA were loaded with Gd-DO3A via cystamine as the spacer. Cystamine can be readily cleaved by endogenous thiols to release the Gd(III) chelat...

journal_title：Magnetic resonance imaging

authors： Ke T,Feng Y,Guo J,Parker DL,Lu ZR

更新日期：2006-09-01 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：:The purpose of this study is to illustrate motion correction in Musculoskeletal (MSK) Magnetic Resonance Imaging (MRI) through utilization of information from an optical tracker to capture the extent and instant of motion. A Digital Single Lens Reflexive camera is employed as the optical tracker to capture the extent ...

journal_title：Magnetic resonance imaging

authors： Chikop SA,Anchan ABS,Koulagi G,Honnedevasthana AA,Imam S,Geethanath S

更新日期：2018-05-01 00:00:00

abstract：:Pulsed arterial spin labeling (PASL) is an increasingly common technique for noninvasively measuring cerebral blood flow (CBF) and has previously been shown to have good repeatability. It is likely to find a place in clinical trials and in particular the investigation of pharmaceutical agents active in the central ner...

journal_title：Magnetic resonance imaging

authors： Murphy K,Harris AD,Diukova A,Evans CJ,Lythgoe DJ,Zelaya F,Wise RG

更新日期：2011-12-01 00:00:00

abstract：:Idiopathic dilatation of the pulmonary artery (IDPA) is a rare congenital disease which is usually detected fortuitously on chest x-ray, thus radiologists must be aware of this clinical entity. This report describes four cases to which Magnetic Resonance Imaging (MRI) played a major role in diagnosing IDPA and in dete...

journal_title：Magnetic resonance imaging

authors： Ugolini P,Mousseaux E,Sadou Y,Sidi D,Mercier LA,Paquet E,Gaux JC

更新日期：1999-07-01 00:00:00

abstract：:Quantification of magnetic resonance (MR)-based relaxation parameters of tendons and ligaments is challenging due to their very short transverse relaxation times, requiring application of ultra-short echo-time (UTE) imaging sequences. We quantify both T1 and T2* in the quadriceps and patellar tendons of healthy volunt...

journal_title：Magnetic resonance imaging

authors： Krämer M,Maggioni MB,Brisson NM,Zachow S,Teichgräber U,Duda GN,Reichenbach JR

更新日期：2019-11-01 00:00:00

abstract：:Brain alcohol was measured in rhesus monkeys (Macaca mulatta) by proton magnetic resonance spectroscopy (MRS) following acute nasogastric alcohol administration (0.8 g/kg). Monkeys were anesthetized with ketamine and xylazine. A 1.5 T whole body imager and a 3-inch surface coil were used to acquire TE 30 and 270 ms sp...

journal_title：Magnetic resonance imaging

authors： Kaufman MJ,Chiu TM,Mendelson JH,Woods BT,Mello NK,Lukas SE,Fivel PA,Wighton LG

更新日期：1994-01-01 00:00:00

abstract：PURPOSE:Intramuscular fat infiltration is a dynamic process, in response to exercise and muscle health, which can be quantified by estimating fat fraction (FF) from Dixon MRI. Healthy hip abductor muscles are a good indicator of a healthy hip and an active lifestyle as they have a fundamental role in walking. The autom...

journal_title：Magnetic resonance imaging

authors： Belzunce MA,Henckel J,Fotiadou A,Di Laura A,Hart A

更新日期：2020-10-01 00:00:00

abstract：:A quantitative analysis of the dependence of water proton relaxation on water content in randomly packed beds of Sephadex is undertaken. A combination of Osmotic and Capillary theory is used to describe the morphological changes occurring in the packed beds as the water content is lowered. At each water content the wa...

journal_title：Magnetic resonance imaging

authors： Hills BP,Babonneau F

更新日期：1994-01-01 00:00:00

abstract：BACKGROUND AND PURPOSE:The widespread propagation of synchronized neuronal firing in seizure disorders may affect cortical and subcortical brain regions. Diffusion tensor imaging (DTI) can noninvasively quantify white matter integrity. The purpose of this study was to investigate the abnormal changes of white matter in...

journal_title：Magnetic resonance imaging

authors： Meng L,Xiang J,Kotecha R,Rose D,Zhao H,Zhao D,Yang J,Degrauw T

更新日期：2010-11-01 00:00:00

abstract：:The proton spin-lattice relaxation measured at several frequencies leads to a resolved distribution of four Tli for reactive powder concrete (RPC). The typical Tli frequency dependences are quantitatively interpreted by a biphasic fast exchange model and a proton nuclear relaxation of hydrated paramagnetic ions at the...

journal_title：Magnetic resonance imaging

authors： Philippot S,Korb JP,Petit D,Zanni H

更新日期：1998-06-01 00:00:00

abstract：:In vivo temporal EPR imaging was conducted on the brain of rats that received one of two kinds of blood-brain barrier-permeable nitroxide radicals via the tail vein-one is a water-soluble 3-hydroxymethyl-2,2,5,5-tetramethylpyrrolidine-1-oxyl (hydroxymethyl-PROXYL); and the other is a non-water-soluble 3-methoxycarbony...

journal_title：Magnetic resonance imaging

authors： Yokoyama H,Itoh O,Aoyama M,Obara H,Ohya H,Kamada H

更新日期：2002-04-01 00:00:00

abstract：:In porous material research, one main interest of nuclear magnetic resonance diffusion (NMR) experiments is the determination of the shape of pores. While it has been a longstanding question if this is in principle achievable, it has been shown recently that it is indeed possible to perform NMR-based diffusion pore im...

journal_title：Magnetic resonance imaging

authors： Laun FB,Kuder TA

更新日期：2013-09-01 00:00:00

abstract：:The purpose of this study was to demonstrate the initial results of the dynamic contrast-enhanced MRA in under four seconds in the assessment of anomalous pulmonary circulation. We performed dynamic contrast enhanced MRA on ten patients with a temporal resolution of 2-3 sec for each phase. Five patients had pulmonary ...

journal_title：Magnetic resonance imaging

authors： Balci NC,Yalçin Y,Tunaci A,Balci Y

更新日期：2003-01-01 00:00:00

abstract：:It is a big challenge to segment magnetic resonance (MR) images with intensity inhomogeneity. The widely used segmentation algorithms are region based, which mostly rely on the intensity homogeneity, and could bring inaccurate results. In this paper, we propose a novel region-based active contour model in a variationa...

journal_title：Magnetic resonance imaging

authors： Liu L,Zhang Q,Wu M,Li W,Shang F

更新日期：2013-05-01 00:00:00

abstract：:Manganese-dipyridoxal diphosphate (Mn-DPDP) is a liver-selective contrast agent selectively taken up by the hepatocytes. Because of the analogy of structure with pyridoxine (vitamin B6), it was previously suggested that this compound can be selectively taken up by the facilitated transport of vitamers B6. To understan...

journal_title：Magnetic resonance imaging

authors： Gallez B,Baudelet C,Adline J,Charbon V,Lambert DM

更新日期：1996-01-01 00:00:00