Quantitative MRI using T1ρ and T2 in human osteoarthritic cartilage specimens: correlation with biochemical measurements and histology.

abstract：:We implemented pseudo-continuous ASL (pCASL) with 2D and 3D balanced steady state free precession (bSSFP) readout for mapping blood flow in the human brain, retina, and kidney, free of distortion and signal dropout, which are typically observed in the most commonly used echo-planar imaging acquisition. High resolution...

journal_title：Magnetic resonance imaging

authors： Park SH,Wang DJ,Duong TQ

更新日期：2013-09-01 00:00:00

abstract：:Ultra-high field magnetic resonance imaging data obtained using a multi-echo gradient echo sequence has been shown to contain information on tissue microstructure. Quantitative assessment of water fraction, relaxation time and frequency shift using multi-compartment signal modelling may help improve our understanding ...

journal_title：Magnetic resonance imaging

authors： Thapaliya K,Urriola J,Barth M,Reutens DC,Bollmann S,Vegh V

更新日期：2019-09-01 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：:Many algorithms have been proposed for automated segmentation of white matter hyperintensities (WMH) in brain MRI. Yet, broad uptake of any particular algorithm has not been observed. In this work, we argue that this may be due to variable and suboptimal validation data and frameworks, precluding direct comparison of ...

journal_title：Magnetic resonance imaging

authors： Knight J,Taylor GW,Khademi A

更新日期：2018-12-01 00:00:00

abstract：:NMR imaging and localized 1H spectroscopy of a variety of aquatic organisms in vivo is described for the first time. The practical consideration of life support, water volume, salinity, and anesthesia are discussed and solutions presented. Such animal studies shape our understanding of physiology, biochemistry, and bi...

journal_title：Magnetic resonance imaging

authors： Blackband SJ,Stoskopf MK

更新日期：1990-01-01 00:00:00

abstract：:The clinical evaluation of three-dimensional time-of-flight MR angiography was prospectively performed in 16 patients with intracranial meningioma. MR angiographic techniques used in this study both with and without gadopentetate dimeglumine made it possible to demonstrate the topographic relationship between the tumo...

journal_title：Magnetic resonance imaging

authors： Kadota T,Kuriyama K,Inoue E,Fujita M,Nakagawa H,Kuroda C

更新日期：1993-01-01 00:00:00

abstract：PURPOSE:To evaluate the influence of cholecystectomy on the flow dynamic pattern of bile in the extrahepatic bile duct by using cine-dynamic MRCP with spatially-selective inversion-recovery (IR) pulse non-invasively. MATERIALS AND METHODS:56 patients with cholecystectomy and 48 control subjects without cholecystectomy...

journal_title：Magnetic resonance imaging

authors： Sotozono H,Tamada T,Kanki A,Yasokawa K,Fukunaga T,Yamamoto A,Ito K

更新日期：2020-12-01 00:00:00

abstract：:Diffusion tensor imaging (DTI) was used to investigate the involvement of brain white matter in Williams syndrome (WS), a genetic neurodevelopmental disorder. Whole-brain DTIs were obtained from 16 young adults with WS and 16 normal controls. A voxel-based analysis was performed to compare fractional anisotropy (FA) v...

journal_title：Magnetic resonance imaging

authors： Arlinghaus LR,Thornton-Wells TA,Dykens EM,Anderson AW

更新日期：2011-11-01 00:00:00

abstract：:Hippocampal metabolite concentrations were determined by localized in vivo proton magnetic resonance spectroscopy (1H MRS) in eleven patients suffering from refractory mesial temporal lobe epilepsy (MTLE), as well as in eleven age-matched healthy volunteers, and compared with patient history, postoperative outcome and...

journal_title：Magnetic resonance imaging

authors： Duc CO,Trabesinger AH,Weber OM,Meier D,Walder M,Wieser HG,Boesiger P

更新日期：1998-10-01 00:00:00

abstract：:The location and masking of the brain and surrounding cerebrospinal fluid (CSF) in two-dimensional (2D) dual-echo fast spin-echo (FSE) magnetic resonance (MR) images of the head is achieved by an automated procedure with a voxel-based computational algorithm. Linear scale-space features are derived from the short-echo...

journal_title：Magnetic resonance imaging

authors： Suckling J,Brammer MJ,Lingford-Hughes A,Bullmore ET

更新日期：1999-02-01 00:00:00

abstract：:The purpose of this study was to evaluate the effect of gadoxetic acid (Gd-EOB-DTPA) on measurements of liver stiffness by using magnetic resonance elastography (MRE). In this study, 104 consecutive patients (mean age, 67.7±9.4 years) underwent MRE using a 1.5-T MR scanner equipped with a cylindrical passive driver th...

journal_title：Magnetic resonance imaging

authors： Motosugi U,Ichikawa T,Sou H,Sano K,Muhi A,Ehman RL,Araki T

更新日期：2012-01-01 00:00:00

abstract：:Surface modification of liposomes containing Gd-diethylenetriaminepentaacetyl-phosphatidylethanolamine (Gd-DTPA-PE) as an amphiphilic paramagnetic label influences their contrast properties as MRI agents. Liposomes with the mean diameter ca. 220 nm and 10% mol content of Gd-DTPA-PE were modified with dextran (molecula...

journal_title：Magnetic resonance imaging

authors： Trubetskoy VS,Cannillo JA,Milshtein A,Wolf GL,Torchilin VP

更新日期：1995-01-01 00:00:00

abstract：:Parallel excitation using multiple transmit channels has emerged as an effective method to shorten multidimensional spatially selective radiofrequency (RF) pulses, which have a number of important applications, including B1 field inhomogeneity correction in high-field MRI. The specific absorption rate (SAR) is a prima...

journal_title：Magnetic resonance imaging

authors： Liu Y,Feng K,McDougall MP,Wright SM,Ji J

更新日期：2008-10-01 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：:Susceptibility differences are common causes for artifacts in magnetic resonance (MR); therefore, it is important to choose phantom materials in a way that these artifacts are kept at a minimum. In this study, a previously proposed MR imaging (MRI) method [Beuf O, Briguet A, Lissac M, Davis R. Magnetic resonance imagi...

journal_title：Magnetic resonance imaging

authors： Carlsson A,Starck G,Ljungberg M,Ekholm S,Forssell-Aronsson E

更新日期：2006-11-01 00:00:00

abstract：:One of the main problems with rapid magnetic resonance imaging (MRI) techniques is the artifacts that result from off-resonance effects. The proposed off-resonance frequency filtered MRI (OFF-MRI) method focuses on the elimination of off-resonance components from the image of the observed object. To maintain imaging s...

journal_title：Magnetic resonance imaging

authors： Medic J,Tomazic S

更新日期：2010-05-01 00:00:00

abstract：:Qualitative and quantitative proton magnetic resonance imaging techniques were applied to persimmon (Diospyros kaki cv 'Fuyu') fruit during development and post-harvest ripening. Spin-lattice (T(1)) relaxation times in mesocarp parenchyma and vascular tissue exhibited a sigmoidal pattern of increase leading to commerc...

journal_title：Magnetic resonance imaging

authors： Clark CJ,MacFall JS

更新日期：2003-07-01 00:00:00

abstract：:Blood circulation is an important determinant of the biodistribution of superparamagnetic iron oxide nanoparticles. Here we present a magnetic resonance imaging (MRI) technique based on the use of ultrafast echo times (UTE) for the noninvasive determination of blood half-lives at high particle concentrations, when con...

journal_title：Magnetic resonance imaging

authors： Scharlach C,Warmuth C,Schellenberger E

更新日期：2015-11-01 00:00:00

abstract：:When assessing liver iron content using relaxometry, an average relaxation rate (R1, R2 or R2*) is usually determined from a region of interest or the entire liver. This is commonly performed by fitting the signal decay in individual voxels to an appropriate relaxation function. The voxel-level parameters resulting fr...

journal_title：Magnetic resonance imaging

authors： Marro K,Otto R,Kolokythas O,Shimamura A,Sanders JE,McDonald GB,Friedman SD

更新日期：2011-05-01 00:00:00

abstract：:This paper describes a geometrically small NMR imaging system which has been developed and assembled within a university medical center environment. Consideration is given to the technical specifications and basic economics for the magnet system, NMR spectrometer, and computer configuration. Initial research objective...

journal_title：Magnetic resonance imaging

authors： Thomas SR,Ackerman JL,Goebel JR,Davis M,Kereiakes JG,Lin YY

更新日期：1982-01-01 00:00:00

abstract：AIM:The study aimed to validate magnetic resonance microscopy (MRM) studies of forensic tissue specimens (skin samples with electric injury patterns) against the results from routine histology. METHODS AND RESULTS:Computed tomography and magnetic resonance imaging are fast becoming important tools in clinical and fore...

journal_title：Magnetic resonance imaging

authors： Thali MJ,Dirnhofer R,Becker R,Oliver W,Potter K

更新日期：2004-10-01 00:00:00

abstract：:The density driven convection phenomenon is expected to have a significant and positive role in CO2 geological storage capacity and safety. The onset and development of density-driven convective on the core scale is critical to understand the mass transfer mechanism. In this paper, laboratory experiments were conducte...

journal_title：Magnetic resonance imaging

authors： Teng Y,Jiang L,Fan Y,Liu Y,Wang D,Abudula A,Song Y

更新日期：2017-06-01 00:00:00

abstract：:A numerical method is applied to calculate an optimal distribution of currents in air which generate the magnetic field gradients required to spatially encode the radiofrequency signal in a NMR tomographic experiment. We compare the performances of the gradient circuits for the whole body air-core electromagnet descri...

journal_title：Magnetic resonance imaging

authors： Mustarelli P,Rudnicki M,Savini A,Savoldi F,Villa M

更新日期：1990-01-01 00:00:00

abstract：:High signal-to-noise ratios (SNR) are essential for high-resolution anatomical and functional MRI. Phased arrays are advantageous for this but have the drawback that they often have inflexible and bulky configurations. Particularly in experiments where functional MRI is combined with simultaneous electrophysiology, sp...

journal_title：Magnetic resonance imaging

authors： Goense J,Logothetis NK,Merkle H

更新日期：2010-10-01 00:00:00

abstract：:Gd-DOTA contrast enhancement of MR images was evaluated on induced mammary tumors in female rats. A single intravenous injection of the carcinogenic N-nitrosourea ENU was administered to Wistar rats; this simple treatment led to a high percentage of mammary tumors without causing death. All the induced tumors were ade...

journal_title：Magnetic resonance imaging

authors： Bonnet PA,Michel A,Fernandez JP,Cyteval C,Rifai A,Boucard M,Chapat JP,Lamarque JL

更新日期：1990-01-01 00:00:00

abstract：:Manganese (II) N,N'-dipyridoxylethylenediamine-N,N' diacetate 5,5'-bis(phosphate) (MnDPDP) is a hepatobiliary agent that is incorporated into the hepatocyte. We retrospectively reviewed our experience with 39 focal liver lesions in 20 patients studies with MnDPDP-enhanced hepatic magnetic resonance (MR) imaging to det...

journal_title：Magnetic resonance imaging

authors： Liou J,Lee JK,Borrello JA,Brown JJ

更新日期：1994-01-01 00:00:00

abstract：:In ultrashort TE (UTE) imaging, the short T2 values of the tissues of interest are comparable to the k-space readout duration, which result in significant T2 decay during k-space readout. This decay consequently causes significant effects on signal and contrast in UTE sequences, which we evaluate in this paper using m...

journal_title：Magnetic resonance imaging

authors： Chiang JT,Carl M,Du J

更新日期：2014-04-01 00:00:00

abstract：:The present study examined initial changes in non-traumatic osteonecrosis of the femoral head (ONF) on T1- and T2-weighted MR images, and fat suppression images. The subjects were 57 renal transplant recipients (37 males and 20 females), whose median age at the time of transplantation was 31.5 years old (range, 10 to ...

journal_title：Magnetic resonance imaging

authors： Fujioka M,Kubo T,Nakamura F,Shibatani M,Ueshima K,Hamaguchi H,Inoue S,Sugano N,Sakai T,Torii Y,Hasegawa Y,Hirasawa Y

更新日期：2001-09-01 00:00:00

abstract：PURPOSE:We present three-dimensional adiabatic inversion recovery prepared ultrashort echo time Cones (3D IR-UTE-Cones) imaging of cortical bone in the hip of healthy volunteers using a clinical 3T scanner. METHODS:A 3D IR-UTE-Cones sequence, based on a short pulse excitation followed by a 3D Cones trajectory, with a ...

journal_title：Magnetic resonance imaging

authors： Nazaran A,Carl M,Ma Y,Jerban S,Zhu Y,Lu X,Du J,Chang EY

更新日期：2017-12-01 00:00:00

abstract：PURPOSE:To describe the MR appearances of hepatic sarcoidosis in patients with chronic liver disease and correlate the results with clinical stage of disease as measured with the Mayo end-stage liver disease (MELD) score. MATERIALS AND METHODS:Twenty patients with chronic liver disease and histopathological diagnosis ...

journal_title：Magnetic resonance imaging

authors： Ferreira A,Ramalho M,de Campos RO,Heredia V,Roque A,Vaidean G,Semelka RC

更新日期：2013-04-01 00:00:00