Flexible, phase-matched, linear receive arrays for high-field MRI in monkeys.

Abstract:

:High signal-to-noise ratios (SNR) are essential for high-resolution anatomical and functional MRI. Phased arrays are advantageous for this but have the drawback that they often have inflexible and bulky configurations. Particularly in experiments where functional MRI is combined with simultaneous electrophysiology, space constraints can be prohibitive. To this end we developed a highly flexible multiple receive element phased array for use on anesthetized monkeys. The elements are interchangeable and different sizes and combinations of coil elements can be used, for instance, combinations of single and overlapped elements. The preamplifiers including control electronics are detachable and can serve a variety of prefabricated and phase matched arrays of different configurations, allowing the elements to always be placed in close proximity to the area of interest. Optimizing performance of the individual elements ensured high SNR at the cortical surface as well as in deeper laying structures. Performance of a variety of arrangements of gapped linear arrays was evaluated at 4.7 and 7T in high-resolution anatomical and functional MRI.

journal_name

Magn Reson Imaging

authors

Goense J,Logothetis NK,Merkle H

doi

10.1016/j.mri.2010.03.026

subject

Has Abstract

pub_date

2010-10-01 00:00:00

pages

1183-91

issue

8

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(10)00089-5

journal_volume

28

pub_type

杂志文章
  • Noncontrast MRI with diffusion-weighted imaging as the sole imaging modality for detecting liver malignancy in patients with high risk for hepatocellular carcinoma.

    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

    pub_type: 杂志文章

    doi:10.1016/j.mri.2013.12.021

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

    更新日期:2014-07-01 00:00:00

  • Diagnosis of discoid lateral meniscus of the knee on MR imaging.

    abstract::To establish the quantitative MR diagnostic criteria for discoid lateral meniscus, MR imaging of 60 knees with arthroscopically confirmed discoid lateral menisci and 134 knees with semilunar lateral menisci were analyzed. Following four quantitative parameters were measured. (1) Meniscal width (MW): The minimum menisc...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/s0730-725x(02)00473-3

    authors: Samoto N,Kozuma M,Tokuhisa T,Kobayashi K

    更新日期:2002-01-01 00:00:00

  • Intensity dependence of flow signal in slice selective velocity measurements.

    abstract::The quantitative determination of flow velocities using inflow-outflow techniques require slice selective excitation pulses. The intensity-velocity relationship for such methods is shown to be such that flow velocities estimated using techniques which rely on an absolute calibration of the measured intensity are sensi...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(89)90325-1

    authors: Saloner D

    更新日期:1989-01-01 00:00:00

  • Three-dimensional magnetic resonance spectroscopic imaging of histologically confirmed brain tumors.

    abstract::The goal of this study was to determine whether presurgical metabolite levels measured by 3D MR Spectroscopic Imaging (MRSI) can accurately detect viable cancer within human brain tumor masses. A total of 31 patients (33 exams, 39 pathology correlations) with brain tumors were studied prior to surgical biopsy and/or r...

    journal_title:Magnetic resonance imaging

    pub_type: 临床试验,杂志文章

    doi:10.1016/s0730-725x(01)00225-9

    authors: Vigneron D,Bollen A,McDermott M,Wald L,Day M,Moyher-Noworolski S,Henry R,Chang S,Berger M,Dillon W,Nelson S

    更新日期:2001-01-01 00:00:00

  • Application of fuzzy c-means segmentation technique for tissue differentiation in MR images of a hemorrhagic glioblastoma multiforme.

    abstract::The application of a raw data-based, operator-independent MR segmentation technique to differentiate boundaries of tumor from edema or hemorrhage is demonstrated. A case of a glioblastoma multiforme with gross and histopathologic correlation is presented. The MR image data set was segmented into tissue classes based o...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(94)00093-i

    authors: Phillips WE 2nd,Velthuizen RP,Phuphanich S,Hall LO,Clarke LP,Silbiger ML

    更新日期:1995-01-01 00:00:00

  • Morphological features of the neonatal brain following exposure to regional anesthesia during labor and delivery.

    abstract:INTRODUCTION:Recent animal and human epidemiological studies suggest that early childhood exposure to anesthesia may have adverse effects on brain development. As more than 50% of pregnant women in the United States and one-third in the United Kingdom receive regional anesthesia during labor and delivery, understanding...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2014.08.033

    authors: Spann MN,Serino D,Bansal R,Hao X,Nati G,Toth Z,Walsh K,Chiang IC,Sanchez-Peña J,Liu J,Kangarlu A,Liu F,Duan Y,Shova S,Fried J,Tau GZ,Rosen TS,Peterson BS

    更新日期:2015-02-01 00:00:00

  • A CT using longitudinally detected ESR (LODESR-CT) of intraperitoneally injected nitroxide radical in a rat's head.

    abstract::We have developed an in vivo longitudinally detected ESR (LODESR) imaging system operating at 700 MHz based on a loop-gap resonator and a pair of saddle-type pickup coils. A good linear relationship between the LODESR signal intensity and the applied power in a range up to 15.8 W was obtained. The detection of LODESR ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/s0730-725x(97)82763-4

    authors: Yokoyama H,Sato T,Tsuchihashi N,Ogata T,Ohya-Nishiguchi H,Kamada H

    更新日期:1997-01-01 00:00:00

  • Determination of relaxation characteristics during preacute stage of lysophosphatidyl choline-induced demyelinating lesion in rat brain: an animal model of multiple sclerosis.

    abstract::Relaxation time measurements were carried out during the preacute stage of lesion progression in an animal model of demyelination created in the internal capsule (ic) area of the rat brain using lysophosphatidyl choline (LPC). T1 and T2 were determined both before and after 36 h of lesion creation. Histology carried o...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2004.11.010

    authors: Degaonkar MN,Raghunathan P,Jayasundar R,Jagannathan NR

    更新日期:2005-01-01 00:00:00

  • High-resolution, three-dimensional diffusion-weighted breast imaging using DESS.

    abstract:PURPOSE:To evaluate the use of the double-echo steady-state (DESS) sequence for acquiring high-resolution breast images with diffusion and T2 weighting. MATERIALS AND METHODS:Phantom scans were used to verify the T2 and diffusion weighting of the DESS sequence. Image distortion was evaluated in volunteers by comparing...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2013.12.014

    authors: Granlund KL,Staroswiecki E,Alley MT,Daniel BL,Hargreaves BA

    更新日期:2014-05-01 00:00:00

  • A simple way to acquire T(1)-weighted MR images of rat liver with respiratory triggering.

    abstract::To acquire high-resolution T(1)-weighted images of the liver in rats, for which breath-holding cannot be ensured, respiratory triggering is essential. At the respiratory rate of 30-60 times/min in rats, however, T(1)-weighted images cannot be obtained with simple triggering. As a simple solution to this, we applied mu...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2011.10.005

    authors: Morikawa S,Murayama H,Fujimoto S,Shiino A,Inubushi T

    更新日期:2012-04-01 00:00:00

  • Diffusional kurtosis imaging of cingulate fibers in Parkinson disease: comparison with conventional diffusion tensor imaging.

    abstract:OBJECTIVE:The pathological changes in Parkinson disease begin in the brainstem; reach the limbic system and ultimately spread to the cerebral cortex. In Parkinson disease (PD) patients, we evaluated the alteration of cingulate fibers, which comprise part of the limbic system, by using diffusional kurtosis imaging (DKI)...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2013.06.009

    authors: Kamagata K,Tomiyama H,Motoi Y,Kano M,Abe O,Ito K,Shimoji K,Suzuki M,Hori M,Nakanishi A,Kuwatsuru R,Sasai K,Aoki S,Hattori N

    更新日期:2013-11-01 00:00:00

  • A method for MR quantification of flow velocities in blood and CSF using interleaved gradient-echo pulse sequences.

    abstract::The aim of this study was to establish a rapid method for in vivo quantification of a large range of flow velocities using phase information. A basic gradient-echo sequence was constructed, in which flow was encoded along the slice selection direction by variation of the amplitude of a bipolar gradient without changes...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(89)90535-3

    authors: Ståhlberg F,Mogelvang J,Thomsen C,Nordell B,Stubgaard M,Ericsson A,Sperber G,Greitz D,Larsson H,Henriksen O

    更新日期:1989-11-01 00:00:00

  • A robust electrical conductivity imaging method with total variation and wavelet regularization.

    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

    pub_type: 杂志文章

    doi:10.1016/j.mri.2020.02.015

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

    更新日期:2020-06-01 00:00:00

  • Computer-assisted design of surface coils used in magnetic resonance imaging. I. The calculation of the magnetic field.

    abstract::For a number of reasons, it is desirable to fabricate coils which, for a known current, shall produce predetermined values of the magnetic field intensity at a number of points within a nuclear magnetic resonance imager. The calculation of the magnetic field intensity at a set of points involves the integration of the...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(89)90524-9

    authors: Letcher JH

    更新日期:1989-11-01 00:00:00

  • Towards quantitative evaluation of wall shear stress from 4D flow imaging.

    abstract::Wall shear stress (WSS) is a relevant hemodynamic indicator of the local stress applied on the endothelium surface. More specifically, its spatiotemporal distribution reveals crucial in the evolution of many pathologies such as aneurysm, stenosis, and atherosclerosis. This paper introduces a new solution, called PaLMA...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2020.08.017

    authors: Levilly S,Castagna M,Idier J,Bonnefoy F,Le Touzé D,Moussaoui S,Paul-Gilloteaux P,Serfaty JM

    更新日期:2020-12-01 00:00:00

  • Artifacts in magnetic resonance imaging after surgical resection of brain tumors.

    abstract:BACKGROUND:Since the advent of magnetic resonance imaging, metal artifacts have posed an important diagnostic problem in different fields of medicine. However, this has not been systematically studied in patients undergoing surgery for brain tumors. OBJECTIVE:This study was planned to assess whether metal artifacts ca...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2012.11.001

    authors: Bagheri MH,Ahmadloo N,Rezaian S

    更新日期:2013-06-01 00:00:00

  • The lever-coil: a simple, inexpensive sensor for respiratory and cardiac motion in MRI experiments.

    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

    pub_type: 杂志文章

    doi:10.1016/s0730-725x(01)00403-9

    authors: Fishbein KW,McConville P,Spencer RG

    更新日期:2001-07-01 00:00:00

  • Velocity distribution of slow fluid flows in Bentheimer sandstone: an NMRI and propagator study.

    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

    pub_type: 杂志文章

    doi:10.1016/s0730-725x(96)00110-5

    authors: Waggoner RA,Fukushima E

    更新日期:1996-01-01 00:00:00

  • Fast reconstruction of highly undersampled MR images using one and two dimensional principal component analysis.

    abstract::Recent compressed sensing techniques allow signal acquisition with less sampling than required by the Nyquist-Shannon theorem which reduces the data acquisition time in magnetic resonance imaging (MRI). However, prior knowledge becomes essential to reconstruct detailed features when the sampling rate is exceedingly lo...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2015.10.009

    authors: Zong F,d'Eurydice MN,Galvosas P

    更新日期:2016-02-01 00:00:00

  • Investigating mobility of crude oil adsorbates on mineral surfaces by NMR.

    abstract::We have applied diffusion and relaxation Nuclear Magnetic Resonance experiments to investigate the translational and rotational mobility of adsorbents on quartz and calcite mineral surfaces. On both surfaces it was found that water is the dominant molecule. On the quartz surface the majority of water molecules have a ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2018.10.002

    authors: Sørgård HN,Totland C,Nerdal W,Seland JG

    更新日期:2019-02-01 00:00:00

  • Cardiovascular applications of magnetic resonance imaging.

    abstract::Magnetic resonance imaging (MRI) is a completely noninvasive modality that has shown significant promise for the evaluation of the cardiovascular system. Our imaging technique employed electrocardiographic (ECG) gating, which resulted in well-resolved images of the cardiac structures. Patients and animals with a varie...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(84)90002-x

    authors: McNamara MT,Higgins CB

    更新日期:1984-01-01 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

  • High resolution simultaneous imaging of intracranial and extracranial arterial wall with improved cerebrospinal fluid suppression.

    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

    pub_type: 杂志文章

    doi:10.1016/j.mri.2017.08.004

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

    更新日期:2017-12-01 00:00:00

  • MR characteristics of neoplasms and vascular malformations associated with epilepsy.

    abstract::We assessed the magnetic resonance (MR) imaging characteristics of two categories of epileptogenic substrates, neoplasms, and vascular malformations, to determine MR sensitivity and typical imaging features. A blinded retrospective analysis was performed on MR scans from 41 patients who had a neoplasm or vascular malf...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(95)02026-p

    authors: Bronen RA,Fulbright RK,Spencer DD,Spencer SS,Kim JH,Lange RC

    更新日期:1995-01-01 00:00:00

  • Severe anaphylactoid reaction after i.v. Gd-DTPA.

    abstract::Serious adverse reactions following the IV administration of Gd-DTPA (Magnevist, gadopenetate dimeglumine, Berlex Laboratories, Wayne, NJ), although extremely rare, can occur. As yet, there has been no published case of a severe anaphylactoid-type reaction to Gd-DTPA. ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/0730-725x(90)90019-x

    authors: Weiss KL

    更新日期:1990-01-01 00:00:00

  • Analysis of microporosity and setting of reactive powder concrete by proton nuclear relaxation.

    abstract::The proton spin-lattice relaxation measured at several frequencies leads to a resolved distribution of four Tli for reactive powder concrete (RPC). The typical Tli frequency dependences are quantitatively interpreted by a biphasic fast exchange model and a proton nuclear relaxation of hydrated paramagnetic ions at the...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/s0730-725x(98)00063-0

    authors: Philippot S,Korb JP,Petit D,Zanni H

    更新日期:1998-06-01 00:00:00

  • Acute pancreatic graft fistula and peripancreatic fluid collection: demonstration by secretin-stimulated MRI.

    abstract::Peripancreatic fluid collections are among the common post pancreas transplant complications, which are mainly due to leakage from the anastomosis site to bowel and graft pancreatitis. Differentiation between these two entities is important because they are treated differently. In this case, secretin stimulated magnet...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2009.02.003

    authors: Alkaade S,Fattahi R,Balci NC,Akduman EI,Garvin PJ,Modanlou KA,Burton FR

    更新日期:2009-09-01 00:00:00

  • Two-tensor model-based bootstrapping on classified tensor morphologies: estimation of uncertainty in fiber orientation and probabilistic tractography.

    abstract::In this manuscript, fast and clinically feasible model-based bootstrapping algorithms using a geometrically constrained two-tensor diffusion model are employed for estimating uncertainty in fiber orientation. A Monte-Carlo-based tensor morphology voxel classification algorithm is initially applied using single-tensor ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2012.07.004

    authors: Ratnarajah N,Simmons A,Bertoni M,Hojjatoleslami A

    更新日期:2013-02-01 00:00:00

  • A novel in silico platform for a fully automatic personalized brain tumor growth.

    abstract::Glioblastoma Multiforme is the most common and most aggressive type of brain tumors. Although accurate prediction of Glioblastoma borders and shape is absolutely essential for neurosurgeons, there are not many in silico platforms that can make such predictions. In the current study, an automatic patient-specific simul...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2019.12.012

    authors: Hajishamsaei M,Pishevar A,Bavi O,Soltani M

    更新日期:2020-05-01 00:00:00

  • 3D cerebrovascular segmentation combining fuzzy vessel enhancement and level-sets with anisotropic energy weights.

    abstract::The aim of this work is to present and evaluate a level-set segmentation approach with vesselness-dependent anisotropic energy weights, which focuses on the exact segmentation of malformed as well as small vessels from time-of-flight (TOF) magnetic resonance angiography (MRA) datasets. In a first step, a vesselness fi...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章

    doi:10.1016/j.mri.2012.07.008

    authors: Forkert ND,Schmidt-Richberg A,Fiehler J,Illies T,Möller D,Säring D,Handels H,Ehrhardt J

    更新日期:2013-02-01 00:00:00