当前位置： SCI文献检索 > MAGNETIC RESONANCE IMAGING期刊下所有文献 > GRAPPA-based susceptibility-weighted imaging of normal volunteers and patients with brain tumor at 7 T.

GRAPPA-based susceptibility-weighted imaging of normal volunteers and patients with brain tumor at 7 T.

Abstract：

:Susceptibility-weighted imaging (SWI) is a valuable technique for high-resolution imaging of brain vasculature that greatly benefits from the emergence of higher field strength MR scanners. Autocalibrating partially parallel imaging techniques can be employed to reduce lengthy acquisition times as long as the decrease in signal-to-noise ratio does not significantly affect the contrast between vessels and brain parenchyma. This study assessed the feasibility of a Generalized Autocalibrating Partially Parallel Acquisition (GRAPPA)-based SWI technique at 7 T in both healthy volunteers and brain tumor patients. GRAPPA-based SWI allowed a twofold or more reduction in scan time without compromising vessel contrast and small vessel detection. Postprocessing parameters for the SWI needed to be modified for patients where the tumor causes high-frequency phase wrap artifacts but did not adversely affect vessel contrast. GRAPPA-based SWI at 7 T revealed regions of microvascularity, hemorrhage and calcification within heterogeneous brain tumors that may aid in characterizing active or necrotic tumor and monitoring treatment effects.

journal_name

Magn Reson Imaging

journal_title

Magnetic resonance imaging

authors

Lupo JM,Banerjee S,Hammond KE,Kelley DA,Xu D,Chang SM,Vigneron DB,Majumdar S,Nelson SJ

doi

10.1016/j.mri.2008.08.003

subject

Has Abstract

pub_date

2009-05-01 00:00:00

pages

480-8

issue

4

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(08)00271-3

journal_volume

27

pub_type

杂志文章

相关文献

MAGNETIC RESONANCE IMAGING文献大全
  • Quantification of venous blood signal contribution to BOLD functional activation in the auditory cortex at 3 T.

    abstract：:Most modern techniques for functional magnetic resonance imaging (fMRI) rely on blood-oxygen-level-dependent (BOLD) contrast as the basic principle for detecting neuronal activation. However, the measured BOLD effect depends on a transfer function related to neurophysiological changes accompanying electrical neural ac...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2008.02.006

    authors： Casciaro S,Bianco R,Distante A

    更新日期：2008-11-01 00:00:00

  • Investigations of polymer dynamics in nanoporous media by field cycling NMR relaxometry and the dipolar correlation effect.

    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

    pub_type： 杂志文章

    doi：10.1016/j.mri.2006.11.018

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

    更新日期：2007-05-01 00:00:00

  • In vitro adrenal cortex lesions characterization by NMR spectroscopy.

    abstract：:Percentage of lipid content of 22 adrenal cortex lesions and their water proton longitudinal relaxation time were measured in vitro at 60 MHz. Although water relaxation times obtained on benign and malignant samples overlap each other, measurements of the percentage of lipids performed on the same tissues allow us to ...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(87)90123-8

    authors： Leroy-Willig A,Roucayrol JC,Luton JP,Courtieu J,Niesenbaum N,Louvel A

    更新日期：1987-01-01 00:00:00

  • A flexible 9-channel coil array for fast 3D MR thermometry in MR-guided high-intensity focused ultrasound (HIFU) studies on rabbits at 3 T.

    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

    pub_type： 杂志文章

    doi：10.1016/j.mri.2019.10.008

    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

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

    abstract：PURPOSE:To provide a single open-source platform for comprehensive MR algorithm development inclusive of simulations, pulse sequence design and deployment, reconstruction, and image analysis. METHODS:We integrated the "Pulseq" platform for vendor-independent pulse programming with Graphical Programming Interface (GPI)...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2018.03.008

    authors： Ravi KS,Potdar S,Poojar P,Reddy AK,Kroboth S,Nielsen JF,Zaitsev M,Venkatesan R,Geethanath S

    更新日期：2018-10-01 00:00:00

  • Development and validation of a novel large field of view phantom and a software module for the quality assurance of geometric distortion in magnetic resonance imaging.

    abstract：OBJECTIVE:To develop and validate a large field of view phantom and quality assurance software tool for the assessment and characterization of geometric distortion in MRI scanners commissioned for radiation therapy planning. MATERIALS AND METHODS:A purpose built phantom was developed consisting of 357 rods (6mm in dia...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章,评审

    doi：10.1016/j.mri.2015.04.003

    authors： Torfeh T,Hammoud R,McGarry M,Al-Hammadi N,Perkins G

    更新日期：2015-09-01 00:00:00

  • 7T CEST MRI: A potential imaging tool for the assessment of tumor grade and cell proliferation in breast cancer.

    abstract：OBJECTIVES:To investigate the feasibility of chemical exchange saturation transfer (CEST) MRI in patients with breast carcinomas and possible correlations between magnetization transfer asymmetry (MTRasym) values and histological features, such as tumor grade and the Ki-67 proliferation index. MATERIALS AND METHODS:Ni...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2019.03.004

    authors： Zaric O,Farr A,Poblador Rodriguez E,Mlynarik V,Bogner W,Gruber S,Asseryanis E,Singer CF,Trattnig S

    更新日期：2019-06-01 00:00:00

  • The use of Gd-DOTA in magnetic resonance imaging of experimentally induced mammary tumors.

    abstract：:Gd-DOTA contrast enhancement of MR images was evaluated on induced mammary tumors in female rats. A single intravenous injection of the carcinogenic N-nitrosourea ENU was administered to Wistar rats; this simple treatment led to a high percentage of mammary tumors without causing death. All the induced tumors were ade...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(90)90215-n

    authors： Bonnet PA,Michel A,Fernandez JP,Cyteval C,Rifai A,Boucard M,Chapat JP,Lamarque JL

    更新日期：1990-01-01 00:00:00

  • Correlations and dissociations between BOLD signal and P300 amplitude in an auditory oddball task: a parametric approach to combining fMRI and ERP.

    abstract：:A parametric method is proposed to examine the relationship between neuronal activity, measured with event related potentials (ERPs), and the hemodynamic response, observed with functional magnetic resonance imaging (fMRI), during an auditory oddball paradigm. After verifying that the amplitude of the evoked response ...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/s0730-725x(02)00496-4

    authors： Horovitz SG,Skudlarski P,Gore JC

    更新日期：2002-05-01 00:00:00

  • Effects of osmotic manipulation of intracellular hydration of HeLa S-3 cells on their proton NMR relaxation times.

    abstract：:Pellets of HeLa from suspension cultured cells in isotonic medium (300 mosmolar) were introduced into a Bruker CXP100 NMR spectrophotometer at 80 mHz within 5 min of the start of centrifugation. T1 and T2 times were measured within a total elapsed time of 20-25 min at 80 mHz and 37 degrees C, and averaged 1430 msec an...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(90)90101-7

    authors： Wheatley DN,Rimmington JE,Foster MA

    更新日期：1990-01-01 00:00:00

  • In vivo nuclear magnetic resonance imaging and spectroscopy of aquatic organisms.

    abstract：:NMR imaging and localized 1H spectroscopy of a variety of aquatic organisms in vivo is described for the first time. The practical consideration of life support, water volume, salinity, and anesthesia are discussed and solutions presented. Such animal studies shape our understanding of physiology, biochemistry, and bi...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(90)90253-x

    authors： Blackband SJ,Stoskopf MK

    更新日期：1990-01-01 00:00:00

  • Chemical exchange saturation transfer MR imaging of articular cartilage glycosaminoglycans at 3 T: Accuracy of B0 Field Inhomogeneity corrections with gradient echo method.

    abstract：:Glycosaminoglycan Chemical Exchange Saturation Transfer (gagCEST) is an important molecular MRI methodology developed to assess changes in cartilage GAG concentrations. The correction for B0 field inhomogeneity is technically crucial in gagCEST imaging. This study evaluates the accuracy of the B0 estimation determined...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2013.07.009

    authors： Wei W,Jia G,Flanigan D,Zhou J,Knopp MV

    更新日期：2014-01-01 00:00:00

  • Measurement of fat fraction in the human thymus by localized NMR and three-point Dixon MRI techniques.

    abstract：PURPOSE:To develop a protocol to non-invasively measure and map fat fraction, fat/(fat+water), as a function of age in the adult thymus for future studies monitoring the effects of interventions aimed at promoting thymic rejuvenation and preservation of immunity in older adults. MATERIALS AND METHODS:Three-dimensional...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2018.03.016

    authors： Fishbein KW,Makrogiannis SK,Lukas VA,Okine M,Ramachandran R,Ferrucci L,Egan JM,Chia CW,Spencer RG

    更新日期：2018-07-01 00:00:00

  • Accuracy and precision of quantitative DCE-MRI parameters: How should one estimate contrast concentration?

    abstract：INTRODUCTION:Pharmacokinetic parameters derived from dynamic contrast-enhanced MRI (DCE-MRI) data are sensitive to acquisition and post-processing techniques, which makes it difficult to compare results obtained using different methods. In particular, one of the most important factors affecting estimation of model para...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2018.05.007

    authors： Wake N,Chandarana H,Rusinek H,Fujimoto K,Moy L,Sodickson DK,Kim SG

    更新日期：2018-10-01 00:00:00

  • Mitral annular velocity measurement with cardiac magnetic resonance imaging using a novel annular tracking algorithm: Validation against echocardiography.

    abstract：BACKGROUND:Doppler based mitral annular velocities are an integral part of echocardiographic left ventricular diastolic function assessment. Although these measurements can be obtained by phase contrast cardiac magnetic resonance imaging (PC-CMR), this approach has limitations. The aims of this study were to assess the...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2018.08.018

    authors： Thavendiranathan P,Guetter C,da Silveira JS,Lu X,Scandling D,Xue H,Jolly MP,Raman SV,Simonetti OP

    更新日期：2019-01-01 00:00:00

  • Diffusion of liquids into semicrystalline polyethylene.

    abstract：:Pulsed field gradient (PFG) nuclear magnetic resonance (NMR) and microimaging experiments have been performed to study the diffusion of liquid alkanes into a variety of semicrystalline polyethylene (PE) samples. The results highlight the importance of the crystalline phase in controlling the diffusion process in terms...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/s0730-725x(98)00032-0

    authors： Harding SG,Gladden LF

    更新日期：1998-06-01 00:00:00

  • Evaluation of pancreatic exocrine insufficiency by cine-dynamic MRCP using spatially selective inversion-recovery (IR) pulse: Correlation with severity of chronic pancreatitis based on morphological changes of pancreatic duct.

    abstract：PURPOSE:To evaluate the correlation between the pancreatic exocrine insufficiency estimated by cine-dynamic MRCP using spatially selective IR pulse and the severity stages (modified Cambridge classification) based on morphological changes of the pancreatic duct in patients with suspected chronic pancreatitis. MATERIAL...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2017.12.007

    authors： Yasokawa K,Ito K,Kanki A,Yamamoto A,Torigoe T,Sato T,Tamada T

    更新日期：2018-05-01 00:00:00

  • Identification and characterization of biological tissues by NMR. Concerted research project of the European Economic Community. Introduction, objectives, and activities.

    abstract：:NMR offers, in the complex proton relaxation properties of biological tissues, a unique and potentially powerful tool of tissue characterization. The difficulties encountered so far in comparing the results of in vitro and in vivo NMR studies carried out in different laboratories inhibit NMR methodologies from fully e...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(88)90447-x

    authors： Podo F,Orr JS,Schmidt KH,Bovée WM

    更新日期：1988-03-01 00:00:00

  • Compensation of susceptibility-induced signal loss in echo-planar imaging for functional applications.

    abstract：:Functional magnetic resonance imaging favors the use of multi-slice gradient-recalled echo-planar imaging due to its short image acquisition times, whole brain coverage and sensitivity to BOLD contrast. However, despite its advantages, gradient-recalled echo-planar imaging also is sensitive to static magnetic field gr...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/s0730-725x(00)00199-5

    authors： Cordes D,Turski PA,Sorenson JA

    更新日期：2000-11-01 00:00:00

  • Magnetic resonance imaging appearance of metastatic Merkel cell carcinoma to the sacrum and epidural space.

    abstract：:Merkel cell carcinoma (MCC) is a rare malignant tumor of the skin and often is diagnosed histologically as lymphoma, melanoma and even metastatic small cell carcinoma of the lung (SCCL). Classified as a neuroendocrine tumor, clinically it originates in the head and neck region and may present with metastatic disease a...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/s0730-725x(00)00176-4

    authors： Moayed S,Maldjianb C,Adam R,Bonakdarpour A

    更新日期：2000-10-01 00:00:00

  • Rapid and recoverable in vivo magnetic resonance imaging of the adult zebrafish at 7T.

    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

    pub_type： 杂志文章

    doi：10.1016/j.mri.2016.10.013

    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

  • Breath-hold T2-weighted sequences of the liver: a comparison of four techniques at 1.0 and 1.5 T.

    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

    pub_type： 杂志文章

    doi：10.1016/0730-725x(92)90371-6

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

    更新日期：1992-01-01 00:00:00

  • Application of machine learning methods to describe the effects of conjugated equine estrogens therapy on region-specific brain volumes.

    abstract：:Use of conjugated equine estrogens (CEE) has been linked to smaller regional brain volumes in women aged ≥65 years; however, it is unknown whether this results in a broad-based characteristic pattern of effects. Structural magnetic resonance imaging was used to assess regional volumes of normal tissue and ischemic les...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章,随机对照试验

    doi：10.1016/j.mri.2010.12.001

    authors： Casanova R,Espeland MA,Goveas JS,Davatzikos C,Gaussoin SA,Maldjian JA,Brunner RL,Kuller LH,Johnson KC,Mysiw WJ,Wagner B,Resnick SM,Women's Health Initiative Memory Study.

    更新日期：2011-05-01 00:00:00

  • Increasing mean airway pressure reduces functional MRI (fMRI) signal in the primary visual cortex.

    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

    pub_type： 杂志文章

    doi：10.1016/s0730-725x(00)00229-0

    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

  • Undifferentiated (embryonal) sarcoma of the liver (USL): MRI findings including dynamic gadolinium enhancement.

    abstract：:We report the MR appearance of undifferentiated (embryonal) sarcoma of the liver (USL) in a 13-year-old female who presented with a 1-year history of intermittent abdominal pain, weight loss, and fatigue. The tumor was a large, solitary, well-defined focal mass lesion with multiple cystic spaces, septations, and subst...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2004.02.003

    authors： Psatha EA,Semelka RC,Fordham L,Firat Z,Woosley JT

    更新日期：2004-07-01 00:00:00

  • Intramuscular adipose tissue determined by T1-weighted MRI at 3T primarily reflects extramyocellular lipids.

    abstract：PURPOSE:The purpose of this study was to assess relationships between intramuscular adipose tissue (IntraMAT) content determined by MRI and intramyocellular lipids (IMCL) and extramyocellular lipids (EMCL) determined by (1)H magnetic resonance spectroscopy ((1)H MRS) or echo intensity determined by B-mode ultrasonograp...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2015.12.038

    authors： Akima H,Hioki M,Yoshiko A,Koike T,Sakakibara H,Takahashi H,Oshida Y

    更新日期：2016-05-01 00:00:00

  • Increased confidence of diagnosis of Ewing sarcoma using T2-weighted MR images.

    abstract：:To assess whether magnetic resonance imaging could assist in diagnosing Ewing sarcoma, we retrospectively analyzed T1- and T2-weighted images of 24 consecutive solitary lytic bone lesions, including 18 cases of histologically proven Ewing sarcoma, and six aggressive-appearing benign lesions including eosinophilic gran...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(94)92450-3

    authors： Hanna SL,Fletcher BD,Kaste SC,Fairclough DL,Parham DM

    更新日期：1994-01-01 00:00:00

  • Lee-Goldburg solid-state imaging.

    abstract：:A new approach to solid-state imaging (SSI) is presented. The method relies on narrowing the resonance line using the Lee-Goldburg sequence. The technique is easy to implement in practice and may find widespread applications in materials science. ...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/0730-725x(92)90409-s

    authors： De Luca F,Lugeri N,De Simone BC,Maraviglia B

    更新日期：1992-01-01 00:00:00

  • Fractional amplitude of low-frequency fluctuation changes in monkeys with spinal cord injury: a resting-state fMRI study.

    abstract：PURPOSE:Although functional magnetic resonance imaging (fMRI) has revealed that spinal cord injury (SCI) causes anomalous changes in task-induced brain activation, its effect during the resting state remains unclear. The aim of this study is to explore the changes of the brain resting-state function in non-human primat...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2014.02.001

    authors： Rao JS,Ma M,Zhao C,Zhang AF,Yang ZY,Liu Z,Li XG

    更新日期：2014-06-01 00:00:00

  • Preliminary evaluation of accelerated microscopic diffusional kurtosis imaging (μDKI) in a rodent model of epilepsy.

    abstract：PURPOSE:Our study aimed to develop accelerated microscopic diffusional kurtosis imaging (μDKI) and preliminarily evaluated it in a rodent model of chronic epilepsy. METHODS:We investigated two μDKI acceleration schemes of reduced sampling density and angular range in a phantom and wild-type rats, and further tested μD...

    journal_title：Magnetic resonance imaging

    pub_type： 杂志文章

    doi：10.1016/j.mri.2018.10.009

    authors： Ji Y,Lu D,Wu L,Qiu B,Song YQ,Sun PZ

    更新日期：2019-02-01 00:00:00