共查询到20条相似文献,搜索用时 31 毫秒
1.
Feasibility of pseudocontinuous arterial spin labeling at 7?T with whole-brain coverage 总被引:1,自引:1,他引:0
Object
We studied the feasibility of pseudocontinuous arterial spin labeling (pCASL) at 7 T. 相似文献2.
An improved PSF mapping method for EPI distortion correction in human brain at ultra high field (7T)
Object
To further improve the quality and robustness of the point-spread function (PSF) mapping method for fully automatic and accurate correction of geometric distortions in EPI at ultra high field such as 7 Tesla with high fidelity. 相似文献3.
Object
The aim of this paper is to characterize the noise propagation for MRI temperature change measurement with emphasis on finding the best echo time combinations that yield the lowest temperature noise. 相似文献4.
Objective
To introduce a novel positive contrast method for passive localization and visualization of paramagnetic susceptibility markers. 相似文献5.
Maier F Krafft AJ Yung JP Stafford RJ Elliott A Dillmann R Semmler W Bock M 《Magma (New York, N.Y.)》2012,25(1):15-22
Object
Proton resonance frequency shift thermometry is sensitive to breathing motion that leads to incorrect phase differences. In this work, a novel velocity-sensitive navigator technique for triggering MR thermometry image acquisition is presented. 相似文献6.
Mei CS Mulkern RV Oshio K Chen NK Madore B Panych LP Hynynen K McDannold NJ 《Magma (New York, N.Y.)》2012,25(1):5-14
Object
To develop an ultrafast MRI-based temperature monitoring method for application during rapid ultrasound exposures in moving organs. 相似文献7.
Object
To present an algorithm for optimization of background suppression pulse timing for arterial spin labeling (ASL) perfusion imaging. 相似文献8.
Object
Although, there is no global consensus on their measurement, magnetic resonance imaging (MRI) appears to be particularly attractive for the study of the sinuses of Valsalva (SV). The purpose of this study was to automatically evaluate the SV from cine-MRI using a standardized method. 相似文献9.
Steven?H?Baete Jan?Vandecasteele Luc?Colman Wilfried?De Neve Yves?De Deene 《Magma (New York, N.Y.)》2010,23(4):217-226
Objective
This study presents a reproducible phantom which mimics oxygen-consuming tissue and can be used for the validation of 19F MRI oximetry. 相似文献10.
Object
To develop a signal model for accurate prediction of myocardial signal during cine-balanced steady-state free precession (bSSFP) imaging. 相似文献11.
Josiane Yankam Njiwa David Ratering Christof Baltes Markus Rudin 《Magma (New York, N.Y.)》2010,23(4):251-261
Object
Dynamic susceptibility contrast MRI (DSC-MRI) is increasingly being used to evaluate cerebral microcirculation. In this study, the use of the analytic image reconstruction (AIR), with the aim to increase the temporal resolution, is evaluated for DSC-MRI in small animals. 相似文献12.
Chang G Wang L Liang G Babb JS Wiggins GC Saha PK Regatte RR 《Magma (New York, N.Y.)》2011,24(4):191-199
Object
The goal of this study was to determine the feasibility of performing quantitative 7 T magnetic resonance imaging (MRI) assessment of trabecular bone micro-architecture of the wrist, a common fracture site. 相似文献13.
Ke Zhang Axel Joachim Krafft Reiner Umathum Florian Maier Wolfhard Semmler Michael Bock 《Magma (New York, N.Y.)》2010,23(3):153-163
Object
To develop an intravascular catheter with ferromagnetic components that is navigated with MR gradient forces and imaged with dedicated MR sequences in real time. 相似文献14.
Adnan Bibic Linda Knutsson Freddy Ståhlberg Ronnie Wirestam 《Magma (New York, N.Y.)》2010,23(3):125-137
Purpose
To investigate a wavelet-based filtering scheme for denoising of arterial spin labeling (ASL) data, potentially enabling reduction of the required number of averages and the acquisition time. 相似文献15.
Fujiwara Y Kimura H Miyati T Kabasawa H Matsuda T Ishimori Y Yamaguchi I Adachi T 《Magma (New York, N.Y.)》2012,25(2):103-111
Object
To propose a new arterial spin labeling (ASL) perfusion-imaging method (alternate slab width inversion recovery ASL: AIRASL) that takes advantage of the qualities of 3.0 T. 相似文献16.
Ulrike Blume James Orbell Matthew Waltham Alberto Smith Reza Razavi Tobias Schaeffter 《Magma (New York, N.Y.)》2009,22(6):375-383
Purpose
The aim of this work was to investigate fast T 1-mapping for the characterization of deep vein thrombosis (DVT). 相似文献17.
Ballweg V Wojtczyk H Roth N Martirosian P Springer F Schick F 《Magma (New York, N.Y.)》2011,24(3):167-178
Object
To optimize strategies and measurement parameters for quantification of small fat and water fractions (<10%) in mixtures of both components by 4-point in-phase and opposed-phase gradient-echo imaging and to compare theoretical results with in-vitro experiments using emulsions. 相似文献18.
Tedros Bezabeh Omkar B. Ijare Nils Albiin Urban Arnelo Bo Lindberg Ian C. P. Smith 《Magma (New York, N.Y.)》2009,22(5):267-275
Objective
There are no specific biomarkers available for the definitive diagnosis of pancreatic cancer. Analysis of d-glucuronic acid (GlcUA) in bile could be valuable in this regard. 相似文献19.
Sigovan M Hamoudeh M Al Faraj A Charpigny D Fessi H Canet-Soulas E 《Magma (New York, N.Y.)》2011,24(5):259-265
Object
The purpose of the study was to show the feasibility of a positive contrast technique GRadient echo Acquisition for Superparamagnetic particles with Positive contrast (GRASP), for a specific type of magnetic particles, designed for tumor treatment under MRI monitoring. 相似文献20.
Blind detection of vascular sources and territories using random vessel encoded arterial spin labeling 总被引:1,自引:1,他引:0