Summary of special issue on gadolinium bioeffects and toxicity with a look to the future.

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：:Liver fibrosis determines the functional liver reserve. Several studies have reported that the apparent diffusion coefficient (ADC) values of diffusion-weighted magnetic resonance imaging (DW-MRI) can assess liver fibrosis. We investigated whether DW-MRI predicts postoperative hepatic insufficiency and liver fibrosis ...

journal_title：Magnetic resonance imaging

authors： Kim SU,Kim YC,Choi JS,Kim KS,Choi GH,Choi JS,Park JY,Kim DY,Ahn SH,Choi EH,Park YN,Chon CY,Han KH,Kim MJ

更新日期：2010-07-01 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：PURPOSE:To assess the value of semi-automated segmentation applied to diffusion MRI for predicting the therapeutic response of liver metastasis. METHODS:Conventional diffusion weighted magnetic resonance imaging (MRI) was performed using b-values of 0, 150, 300 and 450s/mm(2) at baseline and days 4, 11 and 39 followin...

journal_title：Magnetic resonance imaging

authors： Stephen RM,Jha AK,Roe DJ,Trouard TP,Galons JP,Kupinski MA,Frey G,Cui H,Squire S,Pagel MD,Rodriguez JJ,Gillies RJ,Stopeck AT

更新日期：2015-12-01 00:00:00

abstract：OBJECTIVE:This study aims to evaluate the applicability of using single-shot and multi-shot segmented diffusion-weighted imaging (DWI) techniques to support biopsy target localization in a cohort of targeted MRI-guided prostate biopsy patients. MATERIALS AND METHODS:Single-shot echo-planar diffusion-weighted imaging (...

journal_title：Magnetic resonance imaging

authors： Fedorov A,Tuncali K,Panych LP,Fairhurst J,Hassanzadeh E,Seethamraju RT,Tempany CM,Maier SE

更新日期：2016-10-01 00:00:00

abstract：:We compared the ability of magnetic resonance imaging (MRI) using a 0.064 T permanent magnet, three-phase bone scanning, and indium-labeled white blood cell (111In-WBC) scanning, to diagnose osteomyelitis. Twenty-three patients underwent biopsy. All patients were examined at presentation with all three modalities. Sen...

journal_title：Magnetic resonance imaging

authors： Williamson MR,Quenzer RW,Rosenberg RD,Meholic AJ,Eisenberg B,Espinosa MC,Hartshorne MF

更新日期：1991-01-01 00:00:00

abstract：:Relaxation times estimation methods play a central role in various problems, such as magnetic resonance (MR) hardware calibration, tissue characterization, or temperature measurement. Previous studies have proposed optimization criteria to estimate the relaxation time T1 faster than with a multipoint method leading to...

journal_title：Magnetic resonance imaging

authors： Imran J,Langevin F,Saint-Jalmes H

更新日期：1999-11-01 00:00:00

abstract：:Changes in both blood flow and blood oxygenation determine the functional MRI (fMRI) signal. In the present study factors responsible for blood oxygenation (e.g., FiO(2)) were held constant so that changes in pixel count would above all reflect changes in regional cerebral blood flow (rCBF). Continuous positive airway...

journal_title：Magnetic resonance imaging

authors： Lorenz IH,Kolbitsch C,Hörmann C,Schocke M,Kremser C,Zschiegner F,Felber S,Benzer A

更新日期：2001-01-01 00:00:00

abstract：PURPOSE:Investigation of the feasibility of the R2⁎ mapping techniques by using latest theoretical models corrected for confounding factors and optimized for signal to noise ratio. THEORY AND METHODS:The improvement of the performance of state of the art magnetic resonance imaging (MRI) relaxometry algorithms is chall...

journal_title：Magnetic resonance imaging

authors： Siracusano G,La Corte A,Milazzo C,Anastasi GP,Finocchio G,Gaeta M

更新日期：2017-01-01 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：: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：: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：:We recently directly examined the relationship between blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging (fMRI) signals and neural activity by simultaneously acquiring electrophysiological and fMRI data from monkeys in a 4.7-T vertical scanner (Logothetis NK, Pauls J, Augath MA, Trinath T, Oelt...

journal_title：Magnetic resonance imaging

authors： Oeltermann A,Augath MA,Logothetis NK

更新日期：2007-07-01 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：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：:This paper describes a geometrically small NMR imaging system which has been developed and assembled within a university medical center environment. Consideration is given to the technical specifications and basic economics for the magnet system, NMR spectrometer, and computer configuration. Initial research objective...

journal_title：Magnetic resonance imaging

authors： Thomas SR,Ackerman JL,Goebel JR,Davis M,Kereiakes JG,Lin YY

更新日期：1982-01-01 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：:Functional magnetic resonance imaging (fMRI) was performed on a conventional 1.5 T scanner by means of a modified FLASH-technique at temporal resolutions of 80 and 320 ms. The method's stability was assessed by phantom measurements and by investigation of three volunteers resulting in a low amplitude (3%) periodic (4 ...

journal_title：Magnetic resonance imaging

authors： Wiener E,Schad LR,Baudendistel KT,Essig M,Müller E,Lorenz WJ

更新日期：1996-01-01 00:00:00

abstract：PURPOSE:The purposes of this study were to (1) correlate the ultrashort echo time (TE) signal intensity of the pointwise encoding time reduction with radial acquisition (PETRA) sequence with that of the ultrashort echo (UTE) sequence using in vivo meniscal ultrashort TE imaging of the knee with a 3-Tesla (3T) clinical ...

journal_title：Magnetic resonance imaging

authors： Lee YH,Suh JS,Grodzki D

更新日期：2016-02-01 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：:One of the main problems with rapid magnetic resonance imaging (MRI) techniques is the artifacts that result from off-resonance effects. The proposed off-resonance frequency filtered MRI (OFF-MRI) method focuses on the elimination of off-resonance components from the image of the observed object. To maintain imaging s...

journal_title：Magnetic resonance imaging

authors： Medic J,Tomazic S

更新日期：2010-05-01 00:00:00

abstract：:Quantitative measures of rheumatoid arthritis (RA) disease progression can provide valuable tools for evaluation of new treatments during clinical trials. In this study, a novel multispectral (MS) MRI analysis method is presented to quantify changes in bone lesion volume (DeltaBLV) in the hands of RA patients. Image r...

journal_title：Magnetic resonance imaging

authors： Carano RA,Lynch JA,Redei J,Ostrowitzki S,Miaux Y,Zaim S,White DL,Peterfy CG,Genant HK

更新日期：2004-05-01 00:00:00

abstract：:The purpose of this study was to develop a multi-shot dual-echo breathhold fast spin echo technique (DFSE) and compare it with conventional spin echo (T2SE) for T(2)-weighted MR imaging of liver lesions. The DFSE acquisition (EffTE1/EffTE2/TR = 66/143/2100 ms) imaged 5 sections per 17 s breathhold. T2SE imaging (TE1/T...

journal_title：Magnetic resonance imaging

authors： Rydberg JN,Tervonen OA,Rydberg DB,Lomas DJ,Ehman RL,Riederer SJ

更新日期：2000-02-01 00:00:00

abstract：PURPOSE:To evaluate the performance of combined integrated slice-by-slice shimming and readout-segmented EPI (irsEPI) for diffusion-weighted MR imaging (DWI) of the neck at 3Tesla. METHODS:This study was approved by the local ethics committee. An anthropometric phantom of the head/neck region incorporating compartment...

journal_title：Magnetic resonance imaging

authors： Walter SS,Liu W,Stemmer A,Martirosian P,Nikolaou K,Notohamiprodjo M,Gatidis S

更新日期：2017-10-01 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：PURPOSE:To compare the diagnostic performance of the noncontrast MRI including DWI to the standard MRI for detecting hepatic malignancies in patients with chronic liver disease. MATERIALS AND METHODS:We included 135 patients with 136 histologically-confirmed hepatocellular carcinomas (HCCs), 12 cholangiocarcinomas, an...

journal_title：Magnetic resonance imaging

authors： Kim YK,Kim YK,Park HJ,Park MJ,Lee WJ,Choi D

更新日期：2014-07-01 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：:Current density imaging (CDI) has been shown to be a feasible method to map spatial distribution of electric currents through bone structures and for studying osteoporosis and bone fracture models. For the osteoporosis model, bone sample was moistened in a solution of a sodium salt of ethylendiamintetraacetic acid (ED...

journal_title：Magnetic resonance imaging

authors： Beravs K,White D,Sersa I,Demsar F

更新日期：1997-01-01 00:00:00

abstract：:Functional T1ρ mapping has been proposed as a method to assess pH and metabolism dynamics in the brain with high spatial and temporal resolution. The purpose of this work is to describe and evaluate a variant of the spin-locked echo-planar imaging sequence for functional T1ρ mapping at 3T. The proposed sequence rapidl...

journal_title：Magnetic resonance imaging

authors： Johnson CP,Heo HY,Thedens DR,Wemmie JA,Magnotta VA

更新日期：2014-11-01 00:00:00

abstract：:The advantages of event-related functional Magnetic Resonance Imaging (fMRI) and the increasing use of fMRI in cognitive experiments are both driving the development of techniques that allow images sensitive to the blood oxygen level-dependent effect to be acquired at ever-higher temporal resolution. Here, we present ...

journal_title：Magnetic resonance imaging

authors： Gibson A,Peters AM,Bowtell R

更新日期：2006-05-01 00:00:00