Dual-echo breathhold T(2)-weighted fast spin echo MR imaging of liver lesions.

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：: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：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：: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：:A regularization strategy is described for generalized autocalibrating partially parallel acquisition (GRAPPA) that allows successful calibration using a small number of autocalibration signals (ACS). The approach requires certain nonlinear relationships between the GRAPPA coefficients to be satisfied, which increases...

journal_title：Magnetic resonance imaging

authors： Bydder M,Jung Y

更新日期：2009-01-01 00:00:00

abstract：:Forty-two patients with clinically suspected osteomyelitis were examined using magnetic resonance imaging (MRI). Twenty-seven patients (64%) had previous surgery or fracture, and 15 (36%) were referred for differentiation of acute osteomyelitis from bone tumors or other pathologic conditions. MRI was compared with com...

journal_title：Magnetic resonance imaging

authors： Berquist TH,Brown ML,Fitzgerald RH Jr,May GR

更新日期：1985-01-01 00:00:00

abstract：:We have applied diffusion and relaxation Nuclear Magnetic Resonance experiments to investigate the translational and rotational mobility of adsorbents on quartz and calcite mineral surfaces. On both surfaces it was found that water is the dominant molecule. On the quartz surface the majority of water molecules have a ...

journal_title：Magnetic resonance imaging

authors： Sørgård HN,Totland C,Nerdal W,Seland JG

更新日期：2019-02-01 00:00:00

abstract：:Image quality and total scan time in MRI are determined in large part by the trajectory employed to sample the Fourier space. Each trajectory has different properties like coverage of k-space, scan time, sensitivity to off-resonance conditions, etc. These properties are often contradictory, therefore a universal optim...

journal_title：Magnetic resonance imaging

authors： Sabat S,Mir R,Guarini M,Guesalaga A,Irarrazaval P

更新日期：2003-09-01 00:00:00

abstract：:In this work, magnetic resonance imaging (MRI) was employed to observe the in-situ formation and dissociation of methane hydrates in porous media. Methane hydrate was formed in a high-pressure cell with controlled temperature, and then the hydrate was dissociated by thermal injection. The process was photographed by t...

journal_title：Magnetic resonance imaging

authors： Zhao J,Lv Q,Li Y,Yang M,Liu W,Yao L,Wang S,Zhang Y,Song Y

更新日期：2015-05-01 00:00:00

abstract：OBJECTIVE:3D Time-of-flight (TOF) magnetic resonance angiography is commonly used for vascular analyses. A quantification of longitudinal morphological changes usually requires the registration of TOF image sequences acquired at different time points. The aim of this study was to evaluate the precision of different 3D ...

journal_title：Magnetic resonance imaging

authors： Verleger T,Schönfeld M,Säring D,Siemonsen S,Fiehler J,Forkert ND

更新日期：2014-12-01 00:00:00

abstract：:With the recent development of integrated positron emission tomography-magnetic resonance imaging (PET-MRI) scanners, new possibilities for quantitative molecular imaging of cancer are realized. However, the practical advantages and potential clinical benefits of the ability to record PET and MRI data simultaneously m...

journal_title：Magnetic resonance imaging

authors： Yankeelov TE,Peterson TE,Abramson RG,Izquierdo-Garcia D,Arlinghaus LR,Li X,Atuegwu NC,Catana C,Manning HC,Fayad ZA,Gore JC

更新日期：2012-11-01 00:00:00

abstract：:Localized high-resolution diffusion tensor images (DTI) from the midbrain were obtained using reduced field-of-view (rFOV) methods combined with SENSE parallel imaging and single-shot echo planar (EPI) acquisitions at 7T. This combination aimed to diminish sensitivities of DTI to motion, susceptibility variations, and...

journal_title：Magnetic resonance imaging

authors： Wargo CJ,Gore JC

更新日期：2013-07-01 00:00:00

abstract：:We describe a lesion with the magnetic resonance imaging (MRI) characteristics of a glioblastoma mutiforme and demonstrate how perfusion MRI and proton MR spectroscopic imaging can be used to differentiate necrotizing cerebritis from what appeared to be a high-grade glioma. A 43-year-old woman presented to her physici...

journal_title：Magnetic resonance imaging

authors： Pivawer G,Law M,Zagzag D

更新日期：2007-02-01 00:00:00

abstract：:The ripening of the tomato fruit was delayed for several days (average 5 days) by a 1-day heat treatment at 42 degrees C. Ethylene production increased during the first 3 h, but, after 6 h inhibition was almost total in tomato fruit incubated at 42 degrees C. However, recovery of ethylene production was rapid if fruit...

journal_title：Magnetic resonance imaging

authors： Iwahashi Y,Horigane AK,Yoza K,Nagata T,Hosoda H

更新日期：1999-06-01 00:00:00

abstract：:The value of NMR spectrometry as a way to understand the porosity and permeability of rocks is well documented. Other more esoteric parameters, such as restrictive diffusion, grain size distribution, and fluid viscosities have received less notice but are also available from the NMR measurements as laboratory studies ...

journal_title：Magnetic resonance imaging

authors： Taicher Z,Coates G,Gitartz Y,Berman L

更新日期：1994-01-01 00:00:00

abstract：:Radial acquisitions can suffer from trajectory errors leading to reduced image quality. Here we present a new method of trajectory correction that uses all spokes of a radial acquisition and compare it to an existing method that uses a two-spoke pre-scan calibration. For both methods, estimates of the necessary shifts...

journal_title：Magnetic resonance imaging

authors： Buonincontri G,Methner C,Krieg T,Carpenter TA,Sawiak SJ

更新日期：2014-09-01 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：:Absolute quantification of cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time (MTT) are of great relevance for clinical applications. One of the widely used methods for quantification of these parameters is gamma-variate fitting. Traditional nonlinear regression methods for gamma-variate fit...

journal_title：Magnetic resonance imaging

authors： Li X,Tian J,Li E,Wang X,Dai J,Ai L

更新日期：2003-06-01 00:00:00

abstract：:Diabetic retinopathy (DR) is one of a major complication of type 1 diabetes mellitus (T1DM) and a leading cause of blindness. Evidence of animal study has shown that it is not only a microvasucular lesion of the eye, but also a neurodegeneration disease of the visual system. However, the in vivo imaging evidence of ax...

journal_title：Magnetic resonance imaging

authors： Gao L,Huang M,Luo X,Song T,Wang X,Wang Z,Zhang W,Chen J,Lei H

更新日期：2020-09-01 00:00:00

abstract：:The purpose of this study was to analyze background parenchymal enhancement (BPE) in the contralateral normal breast of cancer patients during the course of neoadjuvant chemotherapy (NAC). Forty-five subjects were analyzed. Each patient had three MRIs, one baseline (B/L) and two follow-up (F/U) studies. The fibrogland...

journal_title：Magnetic resonance imaging

authors： Chen JH,Yu H,Lin M,Mehta RS,Su MY

更新日期：2013-11-01 00:00:00

abstract：:In vivo spin-lattice relaxation times, T1, of water and lipid protons of normal and atrophic muscles were measured, using the spatially resolved spectroscopy (SPARS) sequence, in a genetic avian model of myopathy. These T1 values were compared with those of the hypertrophic muscles. Although the water T1 values of mus...

journal_title：Magnetic resonance imaging

authors： Misra LK,Narayana PA

更新日期：1989-05-01 00:00:00

abstract：PURPOSE:To develop a method for estimating metabolite concentrations using phased-array coils and sensitivity-encoded (SENSE) magnetic resonance spectroscopic images (MRSI) of the human brain. MATERIALS AND METHODS:The method is based on the phantom replacement technique and uses receive coil sensitivity maps and body...

journal_title：Magnetic resonance imaging

authors： Bonekamp D,Smith MA,Zhu H,Barker PB

更新日期：2010-04-01 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：:The presence of metallic compounds in facial cosmetics and permanent tattoos may affect the quality of magnetic resonance imaging. We report a case study describing a signal artifact due to the use of a leave-on powdered hair dye. On reviewing the ingredients of the product, it was found to contain several metallic co...

journal_title：Magnetic resonance imaging

authors： Chenji S,Wilman AH,Mah D,Seres P,Genge A,Kalra S

更新日期：2017-01-01 00:00:00

abstract：:A simple model for estimating temperature distribution within the frozen region during cryo ablation was tested for accuracy. Freezing experiments were conducted in both ex vivo and in vivo porcine livers. Temperature was measured during freezing using a fiber-optic temperature sensor. Three-dimensional MR images were...

journal_title：Magnetic resonance imaging

authors： Samset E,Mala T,Edwin B,Gladhaug I,Søreide O,Fosse E

更新日期：2001-06-01 00:00:00

abstract：:Spiral acquisition schemes offer unique advantages such as flow compensation, efficient k-space sampling and robustness against motion that make this option a viable choice among other non-Cartesian sampling schemes. For this reason, the main applications of spiral imaging lie in dynamic magnetic resonance imaging suc...

journal_title：Magnetic resonance imaging

authors： Delattre BM,Heidemann RM,Crowe LA,Vallée JP,Hyacinthe JN

更新日期：2010-07-01 00:00:00

abstract：:Obstructive sleep apnea syndrome (OSAS) is caused by multi-level upper airway obstruction. Anatomic changes at the sites of obstruction may modify the physical or acoustic properties of snores. The surgical success of OSA depends upon precise localization of obstructed levels. We present a case of OSAS who received si...

journal_title：Magnetic resonance imaging

authors： Chen YJ,Shih TT,Chang YC,Hsu YC,Huon LK,Lo MT,Pham VT,Lin C,Wang PC

更新日期：2015-12-01 00:00:00

abstract：:The purpose of this study was to develop a novel intravascular loopless monopole antenna (ILMA) design specifically for imaging of small vessel walls. The ILMA consisted of an unshielded, low-friction guide wire and a tuning/matching box. The material of the guide wire was nitinol and it was coated with polyurethane. ...

journal_title：Magnetic resonance imaging

authors： Yuan H,Lv X,Ma X,Zhang R,Fu Y,Yang X,Wang X,Zhang Z,Zhang J,Fang J

更新日期：2013-01-01 00:00:00

abstract：:Renal transplant patients often require imaging to ensure appropriate graft placement, to assess integrity of transplant vessel anastomosis and to evaluate for stenosis that can be a cause of graft failure. Because there is risk for nephrogenic systemic fibrosis in the setting of renal insufficiency, the use of non-co...

journal_title：Magnetic resonance imaging

authors： Bultman EM,Klaers J,Johnson KM,François CJ,Schiebler ML,Reeder SB,Block WF

更新日期：2014-02-01 00:00:00

abstract：PURPOSE:To develop a free-running framework for 3D isotropic simultaneous myocardial T1/T2 mapping and cine imaging. METHODS:Continuous data acquisition with 3D golden angle radial trajectory is used in conjunction with T2 preparation of varying echo times and inversion recovery (IR) pulses to enable simultaneous myoc...

journal_title：Magnetic resonance imaging

authors： Qi H,Bustin A,Cruz G,Jaubert O,Chen H,Botnar RM,Prieto C

更新日期：2019-11-01 00:00:00