MR imaging of pterygoid muscle inflammation.

abstract：:The increasing size and number of data sets of large four dimensional (three spatial, one temporal) magnetic resonance (MR) cardiac images necessitates efficient segmentation algorithms. Analysis of phase-contrast MR images yields cardiac flow information which can be manipulated to produce accurate segmentations of t...

journal_title：Magnetic resonance imaging

authors： Bergen RV,Lin HY,Alexander ME,Bidinosti CP

更新日期：2015-01-01 00:00:00

abstract：:This paper presents a data-driven method for the reconstruction and visualisation of curvilinear slices from three-dimensional (3D) magnetic resonance (MR) scans of the head. Visualisation of curvilinear slices, rather than standard planar slices, produces symmetrical views of the cortex and allows small abnormalities...

journal_title：Magnetic resonance imaging

authors： Musse O,Armspach JP,Namer IJ,Heitz F,Hennel F,Grucker D

更新日期：1998-12-01 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：:Merkel cell carcinoma (MCC) is a rare malignant tumor of the skin and often is diagnosed histologically as lymphoma, melanoma and even metastatic small cell carcinoma of the lung (SCCL). Classified as a neuroendocrine tumor, clinically it originates in the head and neck region and may present with metastatic disease a...

journal_title：Magnetic resonance imaging

authors： Moayed S,Maldjianb C,Adam R,Bonakdarpour A

更新日期：2000-10-01 00:00:00

abstract：:The successful use of magnetic resonance imaging (MRI) of a moldic fossil dicynodont from the Permian aeolian Hopeman Sandstone Formation of Elgin, Scotland, UK, provides paleontologists with a nondestructive technique for examining fossils preserved in this fashion. For large moldic fossils, medical scanners such as ...

journal_title：Magnetic resonance imaging

authors： Clark ND,Adams C,Lawton T,Cruickshank AR,Woods K

更新日期：2004-02-01 00:00:00

abstract：:The polysplenia syndrome is the association of multiple spleens, situs inversus, congenital heart disease, and azygous continuation of the inferior vena cava. Magnetic resonance (MR) is a noninvasive imaging modality which can easily confirm the multiplicity of spleens, situs inversus, and identify complex congenital ...

journal_title：Magnetic resonance imaging

authors： Jelinek JS,Stuart PL,Done SL,Ghaed N,Rudd SA

更新日期：1989-11-01 00:00:00

abstract：:Non-CE MRA techniques (true steady-state free-precession, SSFP) have been used effectively for the selective visualization of the portal venous system and inferior vena cava. Budd-Chiari Syndrome (BCS) encompasses a number of conditions that cause the obstruction of the hepatic outflow tract from the small hepatic vei...

journal_title：Magnetic resonance imaging

authors： Yang C,Li C,Zeng M,Lu X,Li J,Wang J,Sami MU,Xu K

更新日期：2017-02-01 00:00:00

abstract：:We have synthesized a surface functionalized superparamagnetic iron oxide colloid whose clearance from the vascular compartment was inhibited by asialofetuin but not fetuin. Unlike other particulate or colloidal magnetic resonance (MR) contrast agents, the agent of the current communication is not withdrawn from the v...

journal_title：Magnetic resonance imaging

authors： Josephson L,Groman EV,Menz E,Lewis JM,Bengele H

更新日期：1990-01-01 00:00:00

abstract：:Noise estimation is a challenging task in magnetic resonance imaging (MRI), with applications in quality assessment, filtering or diffusion tensor estimation. Main noise estimators based on the Rician model are revisited and classified in this article, and new useful methods are proposed. Additionally, all the surveye...

journal_title：Magnetic resonance imaging

authors： Aja-Fernández S,Tristán-Vega A,Alberola-López C

更新日期：2009-12-01 00:00:00

abstract：:With the aim of developing a fast algorithm for high-quality MRI reconstruction from undersampled k-space data, we propose a novel deep neural Network, which is inspired by Iterative Shrinkage Thresholding Algorithm with Data consistency (NISTAD). NISTAD consists of three consecutive blocks: an encoding block, which m...

journal_title：Magnetic resonance imaging

authors： Qiu W,Li D,Jin X,Liu F,Sun B

更新日期：2020-07-01 00:00:00

abstract：:New applications of the NMR-MOUSE (mobile universal surface explorer) to non-destructive quality control of elastomers are reported. One example concern the thermal aging of fast clutches which was probed by measurements of 1H transverse relaxation time. Novel methodological developments show that 1H double-quantum fi...

journal_title：Magnetic resonance imaging

authors： Kühn H,Klein M,Wiesmath A,Demco DE,Blümich B,Kelm J,Gold PW

更新日期：2001-04-01 00:00:00

abstract：:Twenty-seven patients with soft-tissue tumors were examined with a Picker 0.15-tesla resistive magnet and by computed tomography (CT). In all but one patient, MRI was better than or equal to CT in defining the anatomic extent of the tumor. We could determine whether major vascular structures were engulfed by the tumor...

journal_title：Magnetic resonance imaging

authors： Weekes RG,Berquist TH,McLeod RA,Zimmer WD

更新日期：1985-01-01 00:00:00

abstract：:A series of direct shear and nuclear magnetic resonance (NMR) tests were performed on a compacted weakly expansive clay saturated by sodium chloride (NaCl) solutions with different concentrations to study the effect of NaCl solution on the shear strength and its mechanism. Results from the direct shear tests show that...

journal_title：Magnetic resonance imaging

authors： Yu H,Sun D,Tian H

更新日期：2019-05-01 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：:The NMR relaxivities of Gd-EOB-DTPA and Gd-DTPA were determined in the kidney and liver of intact male Wistar rats immediately following sacrifice and in vitro in solutions and gels, at 1.5 T using a clinical MR scanner, T1 and T2 values of tissue samples were derived from spin-echo image sequences. Tissue gadolinium ...

journal_title：Magnetic resonance imaging

authors： Shuter B,Tofts PS,Wang SC,Pope JM

更新日期：1996-01-01 00:00:00

abstract：PURPOSE:To develop a technique for three dimensional (3D) high resolution joint imaging of intracranial and extracranial arterial walls with improved cerebrospinal fluid (CSF) suppression and good blood suppression based on T1 weighted sampling perfection with application optimized contrast using different angle evolut...

journal_title：Magnetic resonance imaging

authors： Zhang L,Zhang N,Wu J,Liu X,Chung YC

更新日期：2017-12-01 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：PURPOSE:To provide a single open-source platform for comprehensive MR algorithm development inclusive of simulations, pulse sequence design and deployment, reconstruction, and image analysis. METHODS:We integrated the "Pulseq" platform for vendor-independent pulse programming with Graphical Programming Interface (GPI)...

journal_title：Magnetic resonance imaging

authors： Ravi KS,Potdar S,Poojar P,Reddy AK,Kroboth S,Nielsen JF,Zaitsev M,Venkatesan R,Geethanath S

更新日期：2018-10-01 00:00:00

abstract：:Dysfunction of the corticolimbic circuitry has been highlighted in social anxiety disorder (SAD) during social stimuli. However, few studies have investigated functional connectivity in SAD during the resting state, which may improve our understanding of SAD pathophysiology. The aim of this study was to investigate wh...

journal_title：Magnetic resonance imaging

authors： Ding J,Chen H,Qiu C,Liao W,Warwick JM,Duan X,Zhang W,Gong Q

更新日期：2011-06-01 00:00:00

abstract：:SSFP-based fMRI techniques, known for their high specificity and low geometrical distortion, look promising for high-resolution brain mapping. Nevertheless, they suffer from lack of speed and sensitivity, leading them to be exploited mostly in high-field scanners. Radial acquisition can help with these inefficiencies ...

journal_title：Magnetic resonance imaging

authors： Malekian V,Rastegar F,Shafieizargar B,Nasiraei-Moghaddam A

更新日期：2020-12-01 00:00:00

abstract：:Signal-to-noise ratio (SNR) is a critical factor in MR-guided high-intensity focused ultrasound (HIFU) for local heating, which can affect the accuracy of temperature measurement. In order to achieve high SNR and higher temporal resolution, dedicated coil arrays for MR-guided HIFU applications need to be developed. In...

journal_title：Magnetic resonance imaging

authors： Chen Q,Li Y,Jiang R,Zou C,Tie C,Wen J,Yang X,Zhang X,Liu X,Zheng H

更新日期：2020-01-01 00:00:00

abstract：PURPOSE:To analyze several histopathological features and their possible correlations with whole lesion histogram analysis derived from ADC maps in meningioma. MATERIALS AND METHODS:The retrospective study involved 36 patients with primary meningiomas. For every tumor, the following histogram analysis parameters of ap...

journal_title：Magnetic resonance imaging

authors： Surov A,Hamerla G,Meyer HJ,Winter K,Schob S,Fiedler E

更新日期：2018-09-01 00:00:00

abstract：:Gels consist of crosslinked polymer network swollen in solvent. The network of flexible long-chain molecules traps the liquid medium they are immersed in. Some gels undergo abrupt volume change, a phase transition process, by swelling-shrinking in response to external stimuli changes in solvent composition, temperatur...

journal_title：Magnetic resonance imaging

authors： Yung KT

更新日期：2003-02-01 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：:A four-channel Tic-Tac-Toe (TTT) transmit RF coil was designed and constructed for foot and ankle imaging at 7T MRI. Numerical simulations using an in-house developed FDTD package and experimental analyses using a homogenous phantom show an excellent agreement in terms of B1+ field distribution and s-parameters. Simul...

journal_title：Magnetic resonance imaging

authors： Santini T,Kim J,Wood S,Krishnamurthy N,Farhat N,Maciel C,Raval SB,Zhao T,Ibrahim TS

更新日期：2018-01-01 00:00:00

abstract：:Tissue water molecules reside in different biophysical compartments. For example, water molecules in the vasculature reside for variable periods of time within arteries, arterioles, capillaries, venuoles and veins, and may be within blood cells or blood plasma. Water molecules outside of the vasculature, in the extrav...

journal_title：Magnetic resonance imaging

authors： Mulkern RV,Haker SJ,Maier SE

更新日期：2007-07-01 00:00:00

abstract：BACKGROUND AND PURPOSE:We occasionally encounter phenomena in which venous flow signals of the cavernous sinus (CS) and/or inferior petrosal sinus (IPS) are visualized paradoxically in patients without arteriovenous shunt in 3D time-of-flight magnetic resonance angiography (3D-TOF MRA) of the brain. The aims of this st...

journal_title：Magnetic resonance imaging

authors： Sakamoto M,Taoka T,Iwasaki S,Nakagawa H,Fukusumi A,Takayama K,Wada T,Kichikawa K

更新日期：2004-11-01 00:00:00

abstract：:Tumor aggressiveness and response to therapy are influenced by the extravascular extracellular space fraction (EESF) of the malignant tissue. The EESF may, therefore, be an important prognostic parameter for cancer patients. The aim of this study was to investigate whether gadopentetate dimeglumine (Gd-DTPA)-based dyn...

journal_title：Magnetic resonance imaging

authors： Benjaminsen IC,Brurberg KG,Ruud EB,Rofstad EK

更新日期：2008-02-01 00:00:00

abstract：:Magnetic field inhomogeneities like eddy current-related gradient fields cause geometric distortions in echo-planar imaging (EPI). This in particular affects diffusion-weighted imaging where these distortions vary with the direction of the diffusion weighting and hamper the accurate determination of diffusion paramete...

journal_title：Magnetic resonance imaging

authors： Finsterbusch J

更新日期：2010-04-01 00:00:00

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