Ultrafast 1D MR thermometry using phase or frequency mapping

Object  

To develop an ultrafast MRI-based temperature monitoring method for application during rapid ultrasound exposures in moving organs.     

Prediction of myocardial signal during CINE balanced SSFP imaging

Object  

To develop a signal model for accurate prediction of myocardial signal during cine-balanced steady-state free precession (bSSFP) imaging.     

Echo-dephased steady state free precession

Objective  

To introduce a novel positive contrast method for passive localization and visualization of paramagnetic susceptibility markers.     

An oxygen-consuming phantom simulating perfused tissue to explore oxygen dynamics and <Superscript>19</Superscript>F MRI oximetry

Objective  

This study presents a reproducible phantom which mimics oxygen-consuming tissue and can be used for the validation of ¹⁹F MRI oximetry.     

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.     

Feasibility of pseudocontinuous arterial spin labeling at 7?T with whole-brain coverage

Object  

We studied the feasibility of pseudocontinuous arterial spin labeling (pCASL) at 7 T.     

3D T 1-mapping for the characterization of deep vein thrombosis

Purpose  

The aim of this work was to investigate fast T ₁-mapping for the characterization of deep vein thrombosis (DVT).     

Denoising of arterial spin labeling data: wavelet-domain filtering compared with Gaussian smoothing

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.     

Comprehensive analysis of the Cramer–Rao bounds for magnetic resonance temperature change measurement in fat–water voxels using multi-echo imaging

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.     

Detection and quantification of d-glucuronic acid in human bile using 1H NMR spectroscopy: relevance to the diagnosis of pancreatic cancer

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.     

Positive contrast with therapeutic iron nanoparticles at 4.7 T

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.     

Velocity navigator for motion compensated thermometry

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.     

Remodeling of the infarct territory in the time course of infarct healing in humans

Object  

To analyze the remodeling processes of the infarct territory in the time course of infarct healing.     

Influence of cardiac motion on diffusion-weighted magnetic resonance imaging of the liver

Purpose  

To assess cardiac motion-induced signal loss in diffusion-weighted magnetic resonance imaging (DWI) of the liver using dynamic DWI.     

Rapid 3-D mapping of hyperpolarized 3He spin-lattice relaxation times using variable flip angle gradient echo imaging with application to alveolar oxygen partial pressure measurement in rat lungs

Objective  

The purpose of this work was to develop a rapid 3-D, variable flip angle (VFA) method for measurement of hyperpolarized ³He T ₁ which accounts for the effects of radiofrequency (RF) pulses without the need for additional flip angle information.     

Non-invasive pulmonary perfusion assessment in young patients with cystic fibrosis using an arterial spin labeling MR technique at 1.5 T

Object  

To assess lung perfusion in young patients with cystic fibrosis (CF) using an arterial spin labeling (ASL) technique.     

MR perfusion imaging by alternate slab width inversion recovery arterial spin labeling (AIRASL): a technique with higher signal-to-noise ratio at 3.0?T

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.     

Optimized in-phase and opposed-phase MR imaging for accurate detection of small fat or water fractions: theoretical considerations and experimental application in emulsions

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.     

Correction of susceptibility-induced GRE phase shift for accurate PRFS thermometry proximal to cryoablation iceball

Introduction  

The susceptibility contrast between frozen and unfrozen tissue disturbs the local magnetic field in the proximity of the ice-ball during cryotherapy. This effect should be corrected for in real time to allow PRFS-based monitoring of near-zero temperatures during intervention.     

Increasing temporal resolution of DSC perfusion MRI using the analytic image concept

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.