Pulseq-Graphical Programming Interface: Open source visual environment for prototyping pulse sequences and integrated magnetic resonance imaging algorithm development.

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：:H2O17 is a freely diffusible tracer and naturally occurring isotope of O16 detectable by MRI and has been shown to be useful for assessing cerebral perfusion in animal studies using direct and indirect MR detection techniques. However, earlier MR techniques are either not sensitive to changes in small concentrations o...

journal_title：Magnetic resonance imaging

authors： Sood R

更新日期：2004-02-01 00:00:00

abstract：:The objective of our study was to assess the feasibility of dynamic susceptibility contrast MR technique after bolus injection of SPIO and Gd-DOTA in a tumor model implanted in rats. Tumors were subcutaneously implanted in 24 rats. A FLASH sequence and EPI were evaluated. Different doses of AMI 227 and Gd-DOTA were as...

journal_title：Magnetic resonance imaging

authors： Loubeyre P,De Jaegere T,Miao Y,Landuyt W,Marchal G

更新日期：1999-05-01 00:00:00

abstract：:One of the most critical structural parameters in elastomeric materials is the density of cross-linking between the polymeric chains. This chemical feature greatly affects chain motions and is determinant in controlling mechanical properties of the final product. NMR techniques are widely and efficiently applied to in...

journal_title：Magnetic resonance imaging

authors： Borgia GC,Fantazzini P,Ferrando A,Maddinelli G

更新日期：2001-04-01 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:To assess the ability and reproducibility of Non-contrast Magnetic Resonance Lymphography (NMRL) in detecting and quantify lymphedema, using a semiquantitative scoring system. METHODS AND MATERIAL:This is a monocentric retrospective study of 134 consecutive patients with a clinical diagnosis of limb lymphedema...

journal_title：Magnetic resonance imaging

authors： Franconeri A,Ballati F,Panzuto F,Raciti MV,Smedile A,Maggi A,Asteggiano C,Esposito M,Stoppa D,Lungarotti L,Bortolotto C,Giardini D,De Silvestri A,Calliada F

更新日期：2020-05-01 00:00:00

abstract：:Diffusion tensor magnetic resonance imaging (DTI) is useful for studying the microstructural changes in the spinal cord following traumatic injury; however, image quality is generally poor due to the small size of the spinal cord, physiological motion and susceptibility artifacts. Self-navigated, interleaved, variable...

journal_title：Magnetic resonance imaging

authors： Ellingson BM,Sulaiman O,Kurpad SN

更新日期：2010-11-01 00:00:00

abstract：:The purpose of this study was to develop a method to determine time discrepancies between input and myocardial time-signal intensity (TSI) curves for accurate estimation of myocardial perfusion with first-pass contrast-enhanced MRI. Estimation of myocardial perfusion with contrast-enhanced MRI using kinetic models req...

journal_title：Magnetic resonance imaging

authors： Natsume T,Ishida M,Kitagawa K,Nagata M,Sakuma H,Ichihara T

更新日期：2015-11-01 00:00:00

abstract：:Pathologically, hippocampal sclerosis (HS) is characterized by neuronal loss and gliosis affecting particularly the pyramidal neurons of CA1, CA3, and CA4 with relative sparing of the CA2 neurons. This can be identified in vivo with magnetic resonance (MR) imaging techniques that can reveal both morphological and sign...

journal_title：Magnetic resonance imaging

authors： Jackson GD

更新日期：1995-01-01 00:00:00

abstract：:Respiratory motion and capnometry monitoring were performed during blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) of the brain while a series of paced hyperventilation tasks were performed that caused significant hypocapnia. Respiration volume per time (RVT) and end-tidal carbon dioxi...

journal_title：Magnetic resonance imaging

authors： Vogt KM,Ibinson JW,Schmalbrock P,Small RH

更新日期：2011-11-01 00:00:00

abstract：:The results of a magnetic resonance spin-spin relaxation analysis and broad-line magnetic resonance imaging (MRI) (gradient-echo and stray-field imaging) study of water and water transport in Portland cement pastes are presented. The effect of varying the cure conditions and the water to cement (w/c) ratio of the samp...

journal_title：Magnetic resonance imaging

authors： Bohris AJ,Goerke U,McDonald PJ,Mulheron M,Newling B,Le Page B

更新日期：1998-06-01 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：:A formulation has been developed for the determination of self and mutual inductances in unloaded, eight-column symmetric birdcage coils using their expected resonant mode current patterns and well-known inductance formulas. The average frequency differences between theory and experiment for mode one resonances for ni...

journal_title：Magnetic resonance imaging

authors： Pascone R,Vullo T,Farrelly J,Cahill PT

更新日期：1992-01-01 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：:We present the case of a 44-year-old man who complained of cervical pain. He was treated with physiotherapy and analgetics. Because of persistent pain, computed tomography (CT) scan and MRI were performed. They revealed an osteolytic destruction of the fourth cervical vertebra. The patient was treated surgically for r...

journal_title：Magnetic resonance imaging

authors： Simanski C,Bouillon B,Brockmann M,Tiling T

更新日期：2004-05-01 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：:Functional magnetic resonance imaging (fMRI) research has shown that brain arteriovenous malformations (AVMs) lead to reorganization of cortical motor areas. Since it is known that blood oxygenation level-dependent signal in fMRI may be influenced by the hemodynamic perturbation associated with the presence of the AVM...

journal_title：Magnetic resonance imaging

authors： Caramia F,Francia A,Mainero C,Tinelli E,Palmieri MG,Colonnese C,Bozzao L,Caramia MD

更新日期：2009-12-01 00:00:00

abstract：:Peripheral magnetic resonance angiography (MRA) is growing in use. However, methods of performing peripheral MRA vary widely and continue to be optimized, especially for improvement in illustration of infrapopliteal arteries. The main purpose of this project was to identify imaging factors that can improve arterial vi...

journal_title：Magnetic resonance imaging

authors： Hood MN,Ho VB,Foo TK,Marcos HB,Hess SL,Choyke PL

更新日期：2002-09-01 00:00:00

abstract：PURPOSE:To present preliminary, in vivo temperature measurements during MRI of a pig implanted with a deep brain stimulation (DBS) system. MATERIALS AND METHODS:DBS system (Medtronic Inc., Minneapolis, MN) was implanted in the brain of an anesthetized pig. 3.0-T MRI was performed with a T/R head coil using the low-SAR...

journal_title：Magnetic resonance imaging

authors： Gorny KR,Presti MF,Goerss SJ,Hwang SC,Jang DP,Kim I,Min HK,Shu Y,Favazza CP,Lee KH,Bernstein MA

更新日期：2013-06-01 00:00:00

abstract：:In this retrospective study we tested the hypothesis that the net effect of impaired electrical conduction and therefore increased heat dissipation in multiple sclerosis (MS) results in elevated lateral ventricular (LV) cerebrospinal fluid (CSF) diffusivity as a measure of brain temperature estimated in vivo using dif...

journal_title：Magnetic resonance imaging

authors： Hasan KM,Lincoln JA,Nelson FM,Wolinsky JS,Narayana PA

更新日期：2015-04-01 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：:Biexponential T(2) relaxation of the localized water signal can be used for segmentation of spectroscopic volumes. To assess the specificity of the components an iterative relaxation measurement of the localized water signal (STEAM, 12 echo times, geometric spacing from 30 ms to 2000 ms) was combined with magnetizatio...

journal_title：Magnetic resonance imaging

authors： Helms G,Piringer A

更新日期：2001-07-01 00:00:00

abstract：:Retained sponges after laparotomy may cause a broad spectrum of clinical symptoms and present a difficult diagnostic problem. We report a case of retained surgical sponge in a dog to illustrate the MRI findings of this infrequent but important cause of postoperative complications. ...

journal_title：Magnetic resonance imaging

authors： Terrier F,Revel D,Hricak H,Feduska N

更新日期：1985-01-01 00:00:00

abstract：:Magnetic resonance spectroscopy (MRS) is ideally suited for physiology-neurochemistry experiments with the living brain and particularly for studies on the primary visual cortex (striate cortex or area V1). Yet, the highly convoluted form of the human V1 has thus far prevented the performance of MRS investigations tha...

journal_title：Magnetic resonance imaging

authors： Juchem C,Logothetis NK,Pfeuffer J

更新日期：2007-07-01 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：: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：: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：:Cells labeled by super paramagnetic iron-oxide (SPIO) nanoparticles are more easily seen in gradient echo MR images, but it has not been shown that the amount of nanoparticles or the number of cells can be directly quantified from MR images. This work utilizes a previously developed and improved Complex Image Summatio...

journal_title：Magnetic resonance imaging

authors： Kokeny P,Cheng YN,Liu S,Xie H,Jiang Q

更新日期：2017-01-01 00:00:00

abstract：PURPOSE:To implement and evaluate the accuracy of non-invasive temperature mapping using MRI methods based on the chemical shift (CS) and T1 relaxation in media of various heterogeneity during focal (laser) and external thermal energy deposition. MATERIALS AND METHODS:All measurements were performed on a 1.5 T superco...

journal_title：Magnetic resonance imaging

authors： Bertsch F,Mattner J,Stehling MK,Müller-Lisse U,Peller M,Loeffler R,Weber J,Messmer K,Wilmanns W,Issels R,Reiser M

更新日期：1998-05-01 00:00:00

abstract：:NMR spectroscopy is applied to study microstructure of calcium silicate hydrates present in cement and concrete. It is shown that 29Si NMR gives information on the siliceous skeleton of the hydrates. 1H NMR, using CRAMPS techniques, allows to discriminate between protons linked to silicon atoms or to calcium atoms. A ...

journal_title：Magnetic resonance imaging

authors： Zanni H,Rassem-Bertolo R,Masse S,Fernandez L,Nieto P,Bresson B

更新日期：1996-01-01 00:00:00