Magnetic resonance cholangiopancreatography (MRCP) of intraductal papillary-mucinous neoplasm (IPMN) of the pancreas: case report.

abstract：:The extent of reaction of 153Gd-radiolabeled Gd(L) chelates with 25 mM CO23- (25 mF), PO34-, Zn2+ and Cu2+ at pH 7 was determined for L = EDTA, DTPA, DOTA, HP-DO3A, and DO3A. Gd(EDTA)- and Gd(DTPA)2- reacted (greater than 20% in 10 min) with Cu2+ and Zn2+ in the presence of PO34-. These double replacement reactions yi...

journal_title：Magnetic resonance imaging

authors： Tweedle MF,Hagan JJ,Kumar K,Mantha S,Chang CA

更新日期：1991-01-01 00:00:00

abstract：:A new approach is introduced for non-rigid registration of a pair of magnetic resonance images (MRI). It is a generalization of the demons algorithm with low computational cost, based on local information augmentation (by integrating multiple images) and balanced implementation. Specifically, a single deformation that...

journal_title：Magnetic resonance imaging

authors： Mesin L

更新日期：2020-12-01 00:00:00

abstract：:A single-sided mobile NMR apparatus with a small Halbach magnet was constructed for the first time. It is lightweight, compact and exhibits good sensitivity. The weight of the device is only 2 kg, and the NMR signal of the pencil eraser block can be detected in one shot using the device. This study describes the chara...

journal_title：Magnetic resonance imaging

authors： Chang WH,Chen JH,Hwang LP

更新日期：2006-10-01 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：OBJECTIVE:To investigate T2 mapping as a possible marker for low-grade human articular cartilage lesions during a one-year follow-up, possible changes during the follow-up and compare the reliability and sensitivity of these measurements on high-field (3 T) and ultra-high-field (7 T) MRI scanners. DESIGN:Twenty-one pa...

journal_title：Magnetic resonance imaging

authors： Juras V,Schreiner M,Laurent D,Zbýň Š,Mlynarik V,Szomolanyi P,Hager B,Scotti C,Goldhahn J,Heule R,Bieri O,Trattnig S

更新日期：2019-01-01 00:00:00

abstract：:This work addresses the special problems of measuring flow velocity distributions in rock by NMR methods. Specifically, these problems are to measure very slow flows as well as flows in the presence of background magnetic field gradients caused by heterogeneities of the rock. We modify a stimulated echo sequence for u...

journal_title：Magnetic resonance imaging

authors： Waggoner RA,Fukushima E

更新日期：1996-01-01 00:00:00

abstract：:In the breast carcinamas, sentinel lymph node biopsy (SLNB) attracts attention as technique to be settled by axillary lymph node metastasis, but existence of a false negative case is a problem. Equivalent cross relaxation rate image (ECRI) is the measurement method that we can evaluate a change of organization structu...

journal_title：Magnetic resonance imaging

authors： Matsushima S,Sasaki F,Sarumaru S,Ohta D,Era S,Sogami M,Inaba T,Kinosada Y

更新日期：2003-11-01 00:00:00

abstract：:To determine if magnetic resonance imaging (MRI) can be used to detect tissue viability in segments with persistent 201T1 defects early following acute myocardial infarction, 24 patients underwent MRI and adenosine 201T1 single photon emission computed tomography (SPECT) imaging at approximately 6 days. Infarction was...

journal_title：Magnetic resonance imaging

authors： Johnston DL,Gupta VK,Wendt RE,Mahmarian JJ,Verani MS

更新日期：1993-01-01 00:00:00

abstract：PURPOSE:The purpose was to study the effect of estrogen deficiency on contrast agent diffusion into intervertebral disc in a rat model. MATERIALS AND METHODS:Seven-month-old female Sprague-Dawley rats were used. Fourteen rats had ovariectomy, and nine rats had sham surgery. Magnetic resonance imaging (MRI) of sagittal...

journal_title：Magnetic resonance imaging

authors： Deng M,Griffith JF,Zhu XM,Poon WS,Ahuja AT,Wang YX

更新日期：2012-06-01 00:00:00

abstract：:The subthalamic nucleus (STN) is one of the most common stimulation targets for treating Parkinson's disease using deep brain stimulation (DBS). This procedure requires precise placement of the stimulating electrode. Common practice of DBS implantation utilizes microelectrode recording to locate the sites with the cor...

journal_title：Magnetic resonance imaging

authors： Xiao Y,Beriault S,Pike GB,Collins DL

更新日期：2012-06-01 00:00:00

abstract：:The functional value of TurboFLASH MR imaging in the assessment of dynamic contrast enhancement and renal perfusion anomalies was evaluated in seven patients, who also underwent renal scintigraphy in baseline conditions. The basal renograms obtained from MAG-3 scintigraphy (mercapto acetyl triglycine, MAG3-S) and from...

journal_title：Magnetic resonance imaging

authors： Laissy JP,Faraggi M,Lebtahi R,Soyer P,Brillet G,Méry JP,Menu Y,Le Guludec D

更新日期：1994-01-01 00:00:00

abstract：:The metabolism of 5-fluorouracil (5-FU) is complex and the reason for the low response rate of tumor patients to 5-FU is currently unknown. The aim of this study was to evaluate whether spectral parameters obtained noninvasively by in vivo 19F nuclear magnetic resonance (NMR) spectroscopy can be used to assess individ...

journal_title：Magnetic resonance imaging

authors： Schlemmer HP,Bachert P,Semmler W,Hohenberger P,Schlag P,Lorenz WJ,van Kaick G

更新日期：1994-01-01 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：:We determined whether the accuracy of magnetic resonance angiography (MRA) in the peripheral run-off vessels can be improved by using contrast-enhanced (CE) three-dimensional (3D) technique in comparison to electrocardiograph (ECG)-triggered two-dimensional (2D) time-of-flight (TOF) technique. In a prospective study 2...

journal_title：Magnetic resonance imaging

authors： Vosshenrich R,Kopka L,Castillo E,Böttcher U,Graessner J,Grabbe E

更新日期：1998-10-01 00:00:00

abstract：:The chain dynamics of short-chain perfluoropolyether melts confined in Vycor nanoporous media has been characterized by field cycling nuclear magnetic resonance relaxometry and the dipolar correlation effect. The slowdown of motions under confinement, leading to larger residual dipolar couplings, has been probed by lo...

journal_title：Magnetic resonance imaging

authors： Kausik R,Fatkullin N,Hüsing N,Kimmich R

更新日期：2007-05-01 00:00:00

abstract：:The objective of this study was to measure T2* values of the normal human lung in vivo during breathhold using a rapid gradient-echo sequence with ultra-short echo times (TE). A sagittal slice of the right lung was imaged in six volunteers with various TE ranging from 0.5 ms to 5 ms using a clinical 1.5 Tesla MR scann...

journal_title：Magnetic resonance imaging

authors： Stock KW,Chen Q,Hatabu H,Edelman RR

更新日期：1999-09-01 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

abstract：:In this study, magnetic resonance imaging (MRI) was used to dynamically visualize the diffusion process of CO2 in porous media saturated with liquid hydrocarbon. Based on the assumption of semi-infinite media, effective CO2 diffusivity was obtained directly by the nonlinear fitting of one MR profile during the diffusi...

journal_title：Magnetic resonance imaging

authors： Zhao Y,Chen J,Yang M,Liu Y,Song Y

更新日期：2016-05-01 00:00:00

abstract：:We retrospectively compared the diagnostic accuracy of abdominal ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI) studies performed on the same individual to determine the relative performance of these modalities in the evaluation of disease processes, arising from different intra-abdomi...

journal_title：Magnetic resonance imaging

authors： Noone TC,Semelka RC,Chaney DM,Reinhold C

更新日期：2004-01-01 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：:Fast magnetic resonance (MR) imaging provides a consistent and predictable appearance of vascular abnormalities as shown by four patients with thrombi, dissection and aneurysm. Fast MR images are obtained during breath-holding, resulting in an absence of respiratory motion artifacts. The time of MR study is much less ...

journal_title：Magnetic resonance imaging

authors： Raval B,Kulkarni M,Narayana P,Mehta S

更新日期：1988-07-01 00:00:00

abstract：:The phase difference method of phase contrast MR angiography provides a means of measuring the average velocity in each voxel of an MR scan. When static tissue is present in a voxel containing flow, the measured velocity is not the average velocity of the flow alone, but is lower due to the partial volume effect of th...

journal_title：Magnetic resonance imaging

authors： Hamilton CA

更新日期：1994-01-01 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：: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：PURPOSE:To investigate right ventricular (RV) strain in patients without identified cardiac pathology using cardiac magnetic resonance tissue tracking (CMR TT). METHODS:A total of 50 consecutive patients with no identified cardiac pathology were analyzed. RV longitudinal and circumferential strain was assessed by CMR ...

journal_title：Magnetic resonance imaging

authors： Truong VT,Safdar KS,Kalra DK,Gao X,Ambach S,Taylor MD,Moore R,Taylor RJ,Germann J,Toro-Salazar O,Jefferies JL,Bartone C,Raman SV,Ngo T,Mazur W

更新日期：2017-05-01 00:00:00

abstract：:Open-configuration magnetic resonance imaging (MRI) systems are becoming increasingly desirable for musculoskeletal imaging and image-guided radiotherapy because of their non-claustrophobic configuration. However, geometric image distortion in large fields-of-view (FOV) due to field inhomogeneity and gradient nonlinea...

journal_title：Magnetic resonance imaging

authors： Hong C,Lee DH,Han BS

更新日期：2014-07-01 00:00:00

abstract：:Spatial normalization plays a key role in voxel-based analyses of brain images. We propose a highly accurate algorithm for high-dimensional spatial normalization of brain images based on the technique of symmetric optical flow. We first construct a three dimension optical model with the consistency assumption of inten...

journal_title：Magnetic resonance imaging

authors： Wen Y,Hou L,He L,Peterson BS,Xu D

更新日期：2015-05-01 00:00:00

abstract：:Lipomatous tumors of the uterus are unusual, benign neoplasms seen in postmenopausal women. Although many of the mixed-type cases such as lipoleiomyoma and fibrolipoma have been reported, pure uterine lipomas are extremely rare. In the literature, a few cases with pure uterine lipoma have been reported. We first prese...

journal_title：Magnetic resonance imaging

authors： Erdem G,Celik O,Karakas HM,Alkan A,Hascalik S

更新日期：2007-10-01 00:00:00

abstract：:The most recently reported magnetic resonance first-pass myocardial perfusion studies were restricted to single slice imaging or a data analysis based on interactively placed regions of interest. This study was designed to investigate a new saturation recovery TurboFLASH sequence for multisection myocardial perfusion ...

journal_title：Magnetic resonance imaging

authors： Penzkofer H,Wintersperger BJ,Knez A,Weber J,Reiser M

更新日期：1999-02-01 00:00:00

abstract：:Laplace inversion has been widely used in analyzing nuclear magnetic resonance data to obtain a spectrum of decay time constant, such as the T(2) spectrum. However, due to the ill-conditioned nature of such inversion, it is difficult to determine the reliability and error of the resulting spectrum. This article descri...

journal_title：Magnetic resonance imaging

authors： Song YQ

更新日期：2007-05-01 00:00:00