Dynamic glucose-enhanced (DGE) MRI in the human brain at 7 T with reduced motion-induced artifacts based on quantitative R1ρ mapping.

abstract：:The differential effects of high temperature on 9L rat gliosarcoma cells cultured in two distinctive forms, namely, anchored monolayer cells and multicellular spheroids, were investigated using 31P nuclear magnetic resonance spectroscopy. The critical temperatures resulting in irreversible changes in cellular energeti...

journal_title：Magnetic resonance in medicine

authors： Suzuki N,Kwee IL,Tamas LB,Nakada T

更新日期：1991-06-01 00:00:00

abstract：:Using NMR spectroscopy, we studied purified, human T lymphocytes in a serum-free medium. Purified cells were entrapped inside agarose beads and induced to proliferate by the mitogens phorbol-12-myristate-13-acetate and ionomycin. T lymphocytes in standard culture and inside agarose beads exhibit comparable viability, ...

journal_title：Magnetic resonance in medicine

authors： Bental M,Deutsch C

更新日期：1993-03-01 00:00:00

abstract：PURPOSE:To develop a three-dimensional, free-breathing, late gadolinium enhancement (3D FB-LGE) cardiovascular magnetic resonance (CMR) technique, and to compare it with clinically used two-dimensional breath-hold LGE (2D BH-LGE). METHODS:The proposed 3D FB-LGE method consisted of inversion preparation, inversion dela...

journal_title：Magnetic resonance in medicine

authors： Menon RG,Miller GW,Jeudy J,Rajagopalan S,Shin T

更新日期：2017-04-01 00:00:00

abstract：:Endogenous glucose production (EGP), gluconeogenic and glycogenolytic fluxes by analysis of a single (2)H-NMR spectrum is demonstrated with 6-hr and 24-hr fasted rats. Animals were administered [1-(2)H, 1-(13)C]glucose, a novel tracer of glucose turnover, and (2)H(2)O. Plasma glucose enrichment from both tracers was q...

journal_title：Magnetic resonance in medicine

authors： Nunes PM,Jones JG

更新日期：2009-09-01 00:00:00

abstract：PURPOSE:To present a double diffusion encoding MRI sequence on a clinical scanner to analyze micro-structure and micro-vasculature of tumors. METHODS:The sequence was tested on phantoms, asparaguses, and 2 tumors allografts in a rodent. Results were analyzed using an adapted VERDICT model to estimate microstructural p...

journal_title：Magnetic resonance in medicine

authors： Duchêne G,Abarca-Quinones J,Leclercq I,Duprez T,Peeters F

更新日期：2020-04-01 00:00:00

abstract：:In the dynamic nuclear polarization process, microwave irradiation facilitates exchange of polarization from a radical's unpaired electron to nuclear spins at cryogenic temperatures, increasing polarization by >10,000. Doping samples with Gd(3+) ions further increases the achievable solid-state polarization. However, ...

journal_title：Magnetic resonance in medicine

authors： Gordon JW,Fain SB,Rowland IJ

更新日期：2012-12-01 00:00:00

abstract：PURPOSE:To present the results of the first human spinal cord in vivo MRI scans at 9.4T. METHODS:A human brain coil was used to image the human spinal cord at 9.4T. All anatomical images were acquired with a T2 *-weighted gradient-echo sequence. A comparison of the influence of four different B0 shimming routines on t...

journal_title：Magnetic resonance in medicine

authors： Geldschläger O,Bosch D,Avdievich NI,Henning A

更新日期：2021-02-01 00:00:00

abstract：PURPOSE:To investigate and compare several quantification methods of myocardial perfusion measurements, paying special attention to the relation between the techniques and the required measurement duration. METHODS:Seven patients underwent contrast-enhanced rest and stress cardiac perfusion measurements at 3T. Three s...

journal_title：Magnetic resonance in medicine

authors： Schwab F,Ingrisch M,Marcus R,Bamberg F,Hildebrandt K,Adrion C,Gliemi C,Nikolaou K,Reiser M,Theisen D

更新日期：2015-03-01 00:00:00

abstract：:Saline solutions of manganese ions (Mn2+) were used as articular contrast agents in magnetic resonance microscopy (9.4 T) of cartilage of chicken femoral condyles and pig temporomandibular joints. The diffusion of Mn2+ from the articular surface into the cartilage matrix led to a strong contrast enhancement in the car...

journal_title：Magnetic resonance in medicine

authors： Kusaka Y,Gründer W,Rumpel H,Dannhauer KH,Gersonde K

更新日期：1992-03-01 00:00:00

abstract：PURPOSE:A new method, called Transmit and Receive Patterns from Low-Tip-angle gradient-Echo Images (TRIPLET), is described which simultaneously maps the B1+ and B1- fields of a transmit/receive radiofrequency coil array. The input data are low-tip-angle gradient-echo images, which can be acquired in a relatively short ...

journal_title：Magnetic resonance in medicine

authors： Sbrizzi A,Raaijmakers AJ,Hoogduin H,Lagendijk JJ,Luijten PR,van den Berg CA

更新日期：2014-07-01 00:00:00

abstract：:TSENSE and TGRAPPA are autocalibrated parallel imaging techniques that can improve the temporal resolution and/or spatial resolution in dynamic magnetic resonance imaging applications. In its original form, TSENSE uses temporal low-pass filtering of the undersampled frames to create the sensitivity map. TGRAPPA uses a...

journal_title：Magnetic resonance in medicine

authors： Ding Y,Chung YC,Jekic M,Simonetti OP

更新日期：2011-06-01 00:00:00

abstract：PURPOSE:Parameter mapping in sodium MRI data is challenging due to inherently low SNR and spatial resolution, prompting the need to employ robust models and estimation techniques. This work aims to develop a continuum model of sodium T 2 ...

journal_title：Magnetic resonance in medicine

authors： Syeda W,Blunck Y,Kolbe S,Cleary JO,Johnston LA

更新日期：2019-06-01 00:00:00

abstract：:A modified Look-Locker acquisition using saturation recovery (MLLSR) for breath-held myocardial T(1) mapping is presented. Despite its reduced dynamic range, saturation recovery enables substantially higher imaging efficiency than conventional inversion recovery T(1) mapping because it does not require time for magnet...

journal_title：Magnetic resonance in medicine

authors： Song T,Stainsby JA,Ho VB,Hood MN,Slavin GS

更新日期：2012-03-01 00:00:00

abstract：:The purpose of the study was to test a newly developed, MR-compatible, liquid nitrogen-cooled cryoprobe. The probe has an outer diameter of 3.5 mm and was specifically developed for percutaneous, MR-guided, interstitial cryotherapy. The probe was inserted percutaneously into the livers of 10 rabbits. The cryotherapy p...

journal_title：Magnetic resonance in medicine

authors： Tacke J,Adam G,Speetzen R,Brucksch K,Bücker A,Heshel I,Prescher A,van Vaals JJ,Hunter DW,Rau G,Günther RW

更新日期：1998-03-01 00:00:00

abstract：:The commercial synthetic homopolypeptide polyaspartate (average MW = 30,000, approximately 220 monomers) in solution quantitatively binds up to 40 mol Gd3+ ions per mole of polyaspartate. The water proton relaxivity of the solutions is far higher than that of clinically used or commonly investigated gadolinium(III) co...

journal_title：Magnetic resonance in medicine

authors： Cavagna F,Luchinat C,Scozzafava A,Xia Z

更新日期：1994-01-01 00:00:00

abstract：:Developing a method to noninvasively monitor tissue-engineered constructs is critical for the optimization of construct design and for assessing therapeutic efficacy. For this purpose, NMR is a powerful technique that can be used to obtain both images and spectroscopic data. But the inherent sensitivity of NMR limits ...

journal_title：Magnetic resonance in medicine

authors： Volland NA,Mareci TH,Constantinidis I,Simpson NE

更新日期：2010-04-01 00:00:00

abstract：:T2-weighted MRI of edema in acute myocardial infarction (MI) provides a means of differentiating acute and chronic MI, and assessing the area at risk of infarction. Conventional T2-weighted imaging of edema uses a turbo spin-echo (TSE) readout with dark-blood preparation. Clinical applications of dark-blood TSE method...

journal_title：Magnetic resonance in medicine

authors： Kellman P,Aletras AH,Mancini C,McVeigh ER,Arai AE

更新日期：2007-05-01 00:00:00

abstract：:The study of lung perfusion in normal and diseased subjects is of great interest to physiologists and physicians. In this work we demonstrate the application of a liquid-phase hyperpolarized (HP) carbon-13 ((13)C) tracer to magnetic resonance imaging (MRI) of the pulmonary vasculature and pulmonary perfusion in a porc...

journal_title：Magnetic resonance in medicine

authors： Ishii M,Emami K,Kadlecek S,Petersson JS,Golman K,Vahdat V,Yu J,Cadman RV,MacDuffie-Woodburn J,Stephen M,Lipson DA,Rizi RR

更新日期：2007-03-01 00:00:00

abstract：:Phase contrast flow velocity measurements were performed in six healthy volunteers and 30 patients with arteriosclerotic disease. The iliac arteries were investigated in 8 cases and the femoral arteries in 28 cases. In the first 24 patients, 16 evenly distributed data sets were acquired during one cardiac cycle. In th...

journal_title：Magnetic resonance in medicine

authors： Krug B,Kugel H,Harnischmacher U,Heindel W,Schmidt R,Krings F

更新日期：1995-11-01 00:00:00

abstract：PURPOSE:To develop a fast three-dimensional (3D) k-space encoding method based on spiral projection imaging (SPI) with an interleaved golden-angle approach and to validate this novel sequence on small animal models. METHODS:A disk-like trajectory, in which each disk contained spirals, was developed. The 3D encoding wa...

journal_title：Magnetic resonance in medicine

authors： Castets CR,Lefrançois W,Wecker D,Ribot EJ,Trotier AJ,Thiaudière E,Franconi JM,Miraux S

更新日期：2017-05-01 00:00:00

abstract：:The objective of this article was to analyze the accuracy and precision with which the quantitative distribution of articular cartilage can be determined in the knee joint using MRI. A three-dimensional (3D) technique that accounts for the out-of-plane deviation of the interface normal in strongly curved joint surface...

journal_title：Magnetic resonance in medicine

authors： Eckstein F,Gavazzeni A,Sittek H,Haubner M,Lösch A,Milz S,Englmeier KH,Schulte E,Putz R,Reiser M

更新日期：1996-08-01 00:00:00

abstract：:Generalized MR interferography allows the measurement of parameters which affect the phase of the MR signal. Interference is generated by the simultaneous generation of two echoes in one excitation cycle. Local variations of the signal phase are transformed into displacement of the stripe pattern generated by interfer...

journal_title：Magnetic resonance in medicine

authors： Hennig J

更新日期：1990-12-01 00:00:00

abstract：:NMRD profiles, the magnetic field dependence of the water proton longitudinal relaxation rates, have been acquired for two new diphosphonate-modified GdDTPA complexes currently under evaluation as relaxation agents for the MRI detection of soft-tissue calcifications. Fresh dilute solutions show profiles identical to t...

journal_title：Magnetic resonance in medicine

authors： Adzamli IK,Blau M

更新日期：1991-01-01 00:00:00

abstract：PURPOSE:To achieve artifact-suppressed whole-brain pass-band-balanced steady-state free precession functional MRI from a single functional magnetic resonance imaging (fMRI) scan. METHODS:A complete and practical data acquisition sequence for alt-SSFP fMRI was developed. First, multishot flyback-echo-planar imaging (EP...

journal_title：Magnetic resonance in medicine

authors： Jou T,Patterson S,Pauly JM,Bowen CV

更新日期：2016-05-01 00:00:00

abstract：PURPOSE:To develop a practical method for mapping macromolecule distribution in the brain using ultrashort-TE MRSI data. METHODS:An FID-based chemical shift imaging acquisition without metabolite-nulling pulses was used to acquire ultrashort-TE MRSI data that capture the macromolecule signals with high signal-to-noise...

journal_title：Magnetic resonance in medicine

authors： Lam F,Li Y,Clifford B,Liang ZP

更新日期：2018-05-01 00:00:00

abstract：:At high magnetic fields the performance of a volume-type body coil inside a human sized MR-scanner is influenced by the waveguide action of the scanner's bore. This can result in undesirable strong radio frequency fields B1+) outside the coil's target volume. A radio frequency (RF) transmit system, exploiting this wav...

journal_title：Magnetic resonance in medicine

authors： Andreychenko A,Kroeze H,Klomp DW,Lagendijk JJ,Luijten PR,van den Berg CA

更新日期：2013-09-01 00:00:00

abstract：:The investigation of flow behavior in coronary arteries is of great importance for an understanding of heart failure and heart regulation mechanisms. The purpose of the present study was to demonstrate that flow velocity can be quantified in the coronary arteries of the isolated rat heart with high-resolution phase co...

journal_title：Magnetic resonance in medicine

authors： Köhler S,Hiller KH,Jakob PM,Bauer WR,Haase A

更新日期：2003-09-01 00:00:00

abstract：:Coronary artery data acquisition with steady-state free precession (SSFP) is typically performed in a single frame in mid-diastole with a spectrally selective pulse to suppress epicardial fat signal. Data are acquired while the signal approaches steady state, which may lead to artifacts from the SSFP transient respons...

journal_title：Magnetic resonance in medicine

authors： Park J,Larson AC,Zhang Q,Simonetti O,Li D

更新日期：2005-10-01 00:00:00

abstract：:The combination of a frequency nonselective excitation suppression method (1331 sequence) with selective excitation followed by gradient-induced dephasing of water transverse magnetization yielded suppression ratios of greater than 10,000:1. The need for gradient preemphasis and correction of B0 field shifts is discus...

journal_title：Magnetic resonance in medicine

authors： Brereton IM,Field J,Moxon LN,Irving MG,Doddrell DM

更新日期：1989-01-01 00:00:00

abstract：:Continuous arterial spin labeling (CASL) was used to obtain an index of cerebral blood flow (ICBF) in the normal mouse brain and in an orthotopic mouse model of human U87 high-grade glioma at 8.5 T. Under the assumption of a constant tissue:blood partition coefficient for water in different tissues, the mean ICBF (n =...

journal_title：Magnetic resonance in medicine

authors： Sun Y,Schmidt NO,Schmidt K,Doshi S,Rubin JB,Mulkern RV,Carroll R,Ziu M,Erkmen K,Poussaint TY,Black P,Albert M,Burstein D,Kieran MW

更新日期：2004-05-01 00:00:00