Single-shot-double-echo EPI.

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：:A dextran-Gd-DTPA compound has been recently synthesized utilizing 70,800 Da molecular weight dextran. This polymeric contrast agent for magnetic resonance imaging has been found chemically to be very stable and to demonstrate in vitro improved relaxivities of 1.5 to 2.3 times that of monomeric Gd-DTPA at 100 MHz. Thi...

journal_title：Magnetic resonance imaging

authors： Li KC,Quisling RG,Armitage FE,Richardson D,Mladinich C

更新日期：1992-01-01 00:00:00

abstract：INTRODUCTION:Compared to standard arterial-only first-pass MR-angiography (FPMRA), imaging during the equilibrium phase of a blood pool contrast agent (steady state) has been shown to provide higher image quality and better stenosis grading. Homogenous Dixon fat-suppression promises to increase contrast by suppression ...

journal_title：Magnetic resonance imaging

authors： Homsi R,Gieseke J,Kukuk GM,Träber F,Willinek WA,Schild HH,Hadizadeh DR

更新日期：2015-11-01 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：:The aim of this study was to evaluate intracranial arterial stenoses and aneurysms with accelerated time-resolved three-dimensional (3D) phase-contrast MRI or 4D flow. The 4D flow technique was utilized to image four normal volunteers, two patients with intracranial stenoses and two patients with intracranial aneurysm...

journal_title：Magnetic resonance imaging

authors： Hope TA,Hope MD,Purcell DD,von Morze C,Vigneron DB,Alley MT,Dillon WP

更新日期：2010-01-01 00:00:00

abstract：:Tracking of signal intensity changes in soft tissue over time is often hampered by deformation of the tissue. In this study a method is described that uses finite element modeling to compensate for tissue deformation. The method is applied to the quantification of fluid redistribution in an intervertebral disc that de...

journal_title：Magnetic resonance imaging

authors： Kingma I,Weinans H,van Dieën JH,de Boer RW

更新日期：1998-01-01 00:00:00

abstract：OBJECT:Dynamic in vivo31P-NMR spectroscopy in combination with Magnetic Resonance Imaging (MRI) was used to study muscle bioenergetics of boreal and Arctic scallops (Pecten maximus and Chlamys islandica) to test the hypothesis that future Ocean Warming and Acidification (OWA) will impair the performance of marine inver...

journal_title：Magnetic resonance imaging

authors： Bock C,Wermter FC,Schalkhausser B,Blicher ME,Pörtner HO,Lannig G,Sejr MK

更新日期：2019-09-01 00:00:00

abstract：:Super paramagnetic iron oxide Fe(3)O(4) nanoparticles prepared via photochemical reaction in pure form were used for inducing hyperthermia to treat subcutaneous Ehrlich carcinoma implanted in female mice. Our results indicate that the mean temperature profiles at the rectum, periphery of the tumor surface and at the c...

journal_title：Magnetic resonance imaging

authors： Elsherbini AA,Saber M,Aggag M,El-Shahawy A,Shokier HA

更新日期：2011-02-01 00:00:00

abstract：:Current fast imaging techniques are based on gradient echo sequences with reduced flip angle excitation pulses and very short repetition times TR. Practical T2 values may be of the order of TR or longer. In this situation, a different image contrast can be obtained, depending on details of the sequence. Four essential...

journal_title：Magnetic resonance imaging

authors： van der Meulen P,Groen JP,Tinus AM,Bruntink G

更新日期：1988-07-01 00:00:00

abstract：PURPOSE:To perform comprehensive in vitro experiments using six-directional icosahedral flow encoding (ICOSA6) 4D flow magnetic resonance imaging (MRI) under various scan conditions to analyze the robustness of velocity and turbulence quantification. MATERIALS AND METHODS:In vitro flow phantoms with steady flow rates ...

journal_title：Magnetic resonance imaging

authors： Ha H,Park KJ,Dyverfeldt P,Ebbers T,Yang DH

更新日期：2020-10-01 00:00:00

abstract：UNLABELLED:The conventional diagnostic work-up of a patient suspected of having a vascular cause for stridor, or dysphagia, includes esophagography and bronchoscopy to delineate the abnormal structure without imaging the structure itself. Cine-angiography is regarded as the golden standard, but is not routinely perform...

journal_title：Magnetic resonance imaging

authors： Beekman RP,Hazekamp MG,Sobotka MA,Meijboom EJ,de Roos A,Staalman CR,Beek FJ,Ottenkamp J

更新日期：1998-01-01 00:00:00

abstract：:In-plane flow quantification in MRI offers the potential for assessing vessel patency, and both volume flow rate and flow velocity. These techniques will have definite future impact on MR angiography. The method used in this paper employs motion artifact suppression technique (MAST) gradients to refocus spins travelli...

journal_title：Magnetic resonance imaging

authors： Duerk JL,Pattany PM

更新日期：1988-05-01 00:00:00

abstract：:The medical specialty radiology has experienced a number of extremely important and influential technical developments in the past that have affected how medical imaging is deployed. Artificial intelligence (AI) is potentially another such development that will introduce fundamental changes into the practice of radiol...

journal_title：Magnetic resonance imaging

authors： Gore JC

更新日期：2020-05-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine the pre- and postpubertal 1H magnetic resonance spectroscopic characteristics of the normal testis to establish baseline values for further clinical studies. MATERIALS AND METHODS:The subjects consisted of male volunteers, of whom 19 were prepubertal with ages between...

journal_title：Magnetic resonance imaging

authors： Firat AK,Uğraş M,Karakaş HM,Erdem G,Kurus M,Ugras M,Celik T,Kahraman B,Doğanay S

更新日期：2008-02-01 00:00:00

abstract：:Quantifying the intracranial tissue volume changes in magnetic resonance imaging (MRI) assists specialists to analyze the effects of natural or pathological changes. Since these changes can be subtle, the accuracy of the automatic compartmentalization method is always criticized by specialists. We propose and then eva...

journal_title：Magnetic resonance imaging

authors： Azimbagirad M,Simozo FH,Senra Filho ACS,Murta Junior LO

更新日期：2020-01-01 00:00:00

abstract：:The purpose of this study was to assess the benefits of a 3 T scanner and an eight-channel phased-array head coil for acquiring three-dimensional PRESS (Point REsolved Spectral Selection) proton (H-1) magnetic resonance spectroscopic imaging (MRSI) data from the brains of volunteers and patients with brain tumors rela...

journal_title：Magnetic resonance imaging

authors： Li Y,Osorio JA,Ozturk-Isik E,Chen AP,Xu D,Crane JC,Cha S,Chang S,Berger MS,Vigneron DB,Nelson SJ

更新日期：2006-12-01 00:00:00

abstract：PURPOSE:This study aims to develop and evaluate a robust conductivity imaging method that combines total variation and wavelet regularization to enhance the accuracy of conductivity maps. THEORY AND METHODS:The proposed approach is based on a gradient-based method. The central equation is derived from Maxwell's equati...

journal_title：Magnetic resonance imaging

authors： Sun X,Lu L,Qi L,Mei Y,Liu X,Chen W

更新日期：2020-06-01 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：:The purpose of this investigation is to evaluate the positioning and to confirm the volume concept of the Lea's Shield diaphragm utilizing MR imaging. We evaluated the device in two women, one nulliparous and one multiparous. We were able to comprehensively evaluate the device in both patients and answer all questions...

journal_title：Magnetic resonance imaging

authors： Maldjian C,Pelosi MA 2nd,Pelosi MA 3rd,Adam R

更新日期：2001-06-01 00:00:00

abstract：:Radial imaging protocols suitable for monitoring water transport in biopolymer and food materials during processes such as drying and rehydration are developed and tested on a well-characterized model sample. This model consisted of a randomly packed bed of Sephadex beads with varying water content. The results are in...

journal_title：Magnetic resonance imaging

authors： Hills BP,Babonneau F

更新日期：1994-01-01 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：:A magnetic resonance imaging (MRI) method is described that allows interleaved measurements of transverse (R(2)(*) and R(2)) and longitudinal (R(1)) relaxation rates of tissue water in conjunction with spin labeling. The image-contrasts are intrinsically blood oxygenation level dependent (BOLD) and cerebral blood flow...

journal_title：Magnetic resonance imaging

authors： Hyder F,Renken R,Kennan RP,Rothman DL

更新日期：2000-04-01 00:00:00

abstract：:In the present work, we reported a new nuclear Overhauser enhancement (NOE)-mediated magnetization transfer (MT) signal at around -1.6ppm (NOE(-1.6)) in rat brain and investigated its application in the detection of acute ischemic stroke in rodent model. Using continuous wave (CW) MT sequence, the NOE(-1.6) is reliabl...

journal_title：Magnetic resonance imaging

authors： Zhang XY,Wang F,Afzal A,Xu J,Gore JC,Gochberg DF,Zu Z

更新日期：2016-10-01 00:00:00

abstract：:The general aims of functional brain magnetic resonance imaging (fMRI) studies are to ascertain which areas of the brain are activated during a specific task, the extent of this activation, whether different groups of subjects demonstrate different patterns of activation, and how these groups behave in different tasks...

journal_title：Magnetic resonance imaging

authors： Constable RT,Skudlarski P,Mencl E,Pugh KR,Fulbright RK,Lacadie C,Shaywitz SE,Shaywitz BA

更新日期：1998-04-01 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：:Many algorithms have been proposed for automated segmentation of white matter hyperintensities (WMH) in brain MRI. Yet, broad uptake of any particular algorithm has not been observed. In this work, we argue that this may be due to variable and suboptimal validation data and frameworks, precluding direct comparison of ...

journal_title：Magnetic resonance imaging

authors： Knight J,Taylor GW,Khademi A

更新日期：2018-12-01 00:00:00

abstract：:Thoracic and abdominal magnetic resonance imaging studies generally require some type of compensation for respiratory and cardiac motions in order to yield artifact-free images with good signal-to-noise ratio. Most techniques for respiratory compensation require the use of a non-NMR sensing device to monitor the subje...

journal_title：Magnetic resonance imaging

authors： Fishbein KW,McConville P,Spencer RG

更新日期：2001-07-01 00:00:00

abstract：:The sensitivity of multiple diffusion MRI (dMRI) parameters to longitudinal changes in white matter microstructure was investigated for the 3xTg-AD transgenic mouse model of Alzheimer's disease, which manifests both amyloid beta plaques and neurofibrillary tangles. By employing a specific dMRI method known as diffusio...

journal_title：Magnetic resonance imaging

authors： Nie X,Falangola MF,Ward R,McKinnon ET,Helpern JA,Nietert PJ,Jensen JH

更新日期：2019-04-01 00:00:00

abstract：:T2-weighted images are considered the most sensitive for lesion detection at high field; however, long imaging time is problematic. Accordingly, the authors compared four breath-hold T2 or T2* weighted sequences comprising T2*-weighted FLASH, T2*-weighted PSIF, T2-weighted rapid spin echo (RASE), and T2-weighted Turbo...

journal_title：Magnetic resonance imaging

authors： Simm FC,Semelka RC,Recht M,Deimling M,Lenz G,Laub GA

更新日期：1992-01-01 00:00:00

abstract：PURPOSE:To develop a technique for three dimensional (3D) high resolution joint imaging of intracranial and extracranial arterial walls with improved cerebrospinal fluid (CSF) suppression and good blood suppression based on T1 weighted sampling perfection with application optimized contrast using different angle evolut...

journal_title：Magnetic resonance imaging

authors： Zhang L,Zhang N,Wu J,Liu X,Chung YC

更新日期：2017-12-01 00:00:00