A5068965271- Advanced MRI Techniques and Applications
- Advanced Neuroimaging Techniques and Applications
- Cardiac Imaging and Diagnostics
- Atomic and Subatomic Physics Research
- MRI in cancer diagnosis
- Speech and Audio Processing
- Cardiovascular Function and Risk Factors
- Direction-of-Arrival Estimation Techniques
- Underwater Acoustics Research
- Underwater Vehicles and Communication Systems
- Advanced Image and Video Retrieval Techniques
- Retinal and Optic Conditions
- Structural Health Monitoring Techniques
- Generative Adversarial Networks and Image Synthesis
- Advanced Adaptive Filtering Techniques
- Cardiac pacing and defibrillation studies
- Advanced NMR Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Medical Imaging Techniques and Applications
- Retinal Imaging and Analysis
- Ultrasound and Hyperthermia Applications
- Antenna Design and Analysis
- Energy Harvesting in Wireless Networks
- Advanced X-ray and CT Imaging
- Computer Graphics and Visualization Techniques
University of Missouri
2022-2025
Centre National de la Recherche Scientifique
2011-2023
Institut National des Sciences Appliquées de Lyon
2011-2023
Inserm
2011-2023
University of Virginia Health System
2019-2023
University of Virginia
2019-2022
Huazhong University of Science and Technology
2020
The University of Texas MD Anderson Cancer Center
2017
Université Claude Bernard Lyon 1
2011-2016
Chinese Academy of Sciences
2005-2016
This is a consortium of large children's cohorts that contain measurements major cardiovascular disease (CVD) risk factors in childhood and had the ability to follow those into adulthood. The purpose this enable pooling data increase power, most importantly for follow-up CVD events Within consortium, we hope be able obtain on independent effects early adult levels subsequent occurrence.
To develop a three-dimensional (two dimensions + time) convolutional neural network trained with displacement encoding stimulated echoes (DENSE) data for and strain analysis of cine MRI.In this retrospective multicenter study, deep learning model (StrainNet) was developed to predict intramyocardial from contour motion. Patients various heart diseases healthy controls underwent cardiac MRI examinations DENSE between August 2008 January 2022. Network training inputs were time series myocardial...
Cardiovascular magnetic resonance (CMR) cine displacement encoding with stimulated echoes (DENSE) measures heart motion by myocardial into the signal phase, facilitating high accuracy and reproducibility of global segmental strain providing benefits in clinical performance. While conventional methods for analysis DENSE images are faster than those tagging, they still require manual user assistance. The present study developed evaluated deep learning fully-automatic analysis.
While multiple cardiovascular magnetic resonance (CMR) methods provide excellent reproducibility of global circumferential and longitudinal strain, achieving highly reproducible segmental strain is more challenging. Previous single-center studies have demonstrated displacement encoding with stimulated echoes (DENSE) strain. The present study evaluated the DENSE for measurement whole-slice or (Ecc), (Ell) radial (Err) torsion, Ecc at centers. Six centers participated a total 81 subjects were...
Abstract Purpose The aim of the work is to develop a cascaded diffusion‐based super‐resolution model for low‐resolution (LR) MR tagging acquisitions, which integrated with parallel imaging achieve highly accelerated while enhancing tag grid quality images. Methods We introduced TagGen, conditional generative that uses images as guidance generate corresponding high‐resolution was developed on 50 patients long‐axis‐view, acquisitions. During training, we retrospectively synthesized LR using an...
Introduction Myocardial perfusion MRI is important for diagnosing coronary artery disease, but current clinical methods face challenges in balancing spatial resolution, temporal and slice coverage. Achieving broader coverage higher resolution essential accurately detecting abnormalities across different locations remains difficult due to constraints acquisition speed heart rate variability. While techniques like parallel imaging compressed sensing have significantly advanced imaging, they...
Introduction The disease burden of dementia varies in different economic development regions. This study provides a comprehensive overview Alzheimer’s Disease and Other Dementias(ADOD) trends across regions with varying socio-economic statuses forecasts global incidence rates from 2022 to 2046. Methods Based on the Global Burden (GBD) study, we utilized an age-period-cohort (APC) model analyze annual changes risk factors associated age, period, birth cohort Socio-Demographic Index (SDI)...
MVDR beamformer is one of the well-known adaptive beamforming techniques that offers ability to resolve signals are separated by a fraction an antenna beamwidth. In ideal scenario, can not only minimize array output power but also maintain distortionless mainlobe response toward desired signal. Unfortunately, may have unacceptably low nulling level, which lead significant performance degradation in case unexpected interfering signals. A new robust presented control level array. this proposed...
Purpose To explore the effects of noise and error on kinetic analyses tumor metabolism using hyperpolarized [1‐ 13 C] pyruvate. Methods Numerical simulations were performed to systematically investigate noise, number unknowns, in parameter estimates analysis apparent rate chemical conversion from pyruvate lactate ( k PL ). A pharmacokinetic model with two physical pools spins was used generate analyze synthetic data. Results The reproducibility worsened quickly when peak signal‐to‐noise...
Abstract The decoupled 8 × 2 transceiver array has been shown to achieve a mean B 1 + of 11.7 uT with coefficient variation ~11% over the intracranial brain volume for 7‐T MR imaging. However, this may be thought give lower signal‐to‐noise ratio (SNR) and higher g‐factors parallel imaging compared radio frequency (RF) receive‐only coil due latter's count use overlap reduce mutual impedance. Nonetheless, because transceiver's highly design (pertinent transmission) should also constructive...
Purpose To develop and evaluate a high spatial resolution (1.25 × 1.25 mm 2 ) spiral first‐pass myocardial perfusion imaging technique with whole‐heart coverage at 3T, to better assess transmural differences in between the endocardium epicardium, quantify ischemic burden, improve detection of obstructive coronary artery disease. Methods Whole‐heart high‐resolution pulse sequences corresponding motion‐compensated reconstruction techniques for both interleaved single‐slice (SS) simultaneous...
Purpose To develop an accelerated MRI method to quantify the epicardial adipose tissue (EAT) fatty acid composition (FAC) and test hypothesis that eplerenone (EPL) shifts EAT FAC toward unsaturation in obese mice. Methods Undersampled multi‐echo gradient echo imaging employing a dictionary‐based compressed‐sensing reconstruction iterative decomposition with asymmetry least‐squares–based mapping (IDEAL) was developed, validated, used study mice scanned at 7T. Fully sampled rate 2, 2.5, 3, 3.5...
Purpose Spiral MRI has advantages for cardiac imaging, and multiband (MB) spiral of the heart shows promise. However, current reconstruction methods MB imaging have limitations. We sought to develop improved MRI. Methods Two were developed. The first is non‐Cartesian slice‐GRAPPA (NCSG), which uses phase demodulation gridding operations before application a Cartesian slice‐separating kernel. second method, slice‐SPIRiT, formulates as minimization problem that enforces in‐plane coil...
Childhood cardiovascular risk factors affect vascular function long before overt disease. Twin studies provide a unique opportunity to examine the influence of shared genetic and environmental influences on childhood function. We examined relationship between birth parameters, markers adiposity, insulin resistance, lipid profile blood pressure carotid–femoral pulse wave velocity (PWV), validated non-invasive measure arterial stiffness in healthy cohort school-aged twin children. PWV was...
In order to improve the performance of line spectrum detection, according feature that underwater target radiated noise containing stable spectrum, differences phase difference between and background noise, a weighted detection algorithm based on variance is proposed in frequency domain. After alignment, respectively, are small big domain, this method utilizes statistical cumulate variance, which can restrain disturbance, enhance signal ratio (SNR). The theory analysis experimental results...
A new robust adaptive beamforming based on quadratic constraint is presented; it a extension of Capon's minimum variance distortionless response (MVDR) algorithm. The added to the weighted least squared error between desired and actual beam patterns over small region near array steering direction, which makes less sensitive vector errors nonstationary data snapshots. Thus, robustness achieved. Furthermore, computationally efficient dependent approach eigenvalue decomposition proposed...
In diffusion magnetic resonance imaging (dMRI), the accuracy of fiber tracking and analysis depends directly on that intravoxel architecture reconstruction. Several methods have been proposed estimate using low angular resolution acquisitions owing to their shorter acquisition time relatively b-values. But these are highly sensitive noise. We propose an approach estimating in dMRI. The method consists a constrained compressed sensing (CCS) method, also known as crossing (CFARI) technique,...
A new vibration analyzing system based on the S3C6410, a 16/32-bit ARM 11 CPU and AD7606, an 8-channel high-speed simultaneous 16-bit analog to digital converter (ADC) is presented. The design of hardware described, in which IDT72V265, 16K x 18-bit synchronous FIFO was applied realize continuous real-time data transmission from ADC output register SDRAM through bus S3C6410. Embedded Linux 3.0 operating transplanted, drivers provide up-layer applications interface control have been developed....