A5101063978- Advanced MRI Techniques and Applications
- Atomic and Subatomic Physics Research
- Advanced NMR Techniques and Applications
- NMR spectroscopy and applications
- Medical Imaging Techniques and Applications
- Spine and Intervertebral Disc Pathology
- Characterization and Applications of Magnetic Nanoparticles
- Advanced Image Processing Techniques
- Medical Imaging and Analysis
- Magnetic Field Sensors Techniques
- Image and Signal Denoising Methods
- Electron Spin Resonance Studies
- Infrared Thermography in Medicine
- MRI in cancer diagnosis
- Advanced Numerical Analysis Techniques
- Microfluidic and Capillary Electrophoresis Applications
- Ultrasound and Hyperthermia Applications
- Cervical and Thoracic Myelopathy
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Fermentation and Sensory Analysis
- Wireless Power Transfer Systems
- Quantum optics and atomic interactions
- Cardiovascular Function and Risk Factors
Institute of Electrical Engineering
2012-2025
Chinese Academy of Sciences
2008-2025
University of Chinese Academy of Sciences
2016-2025
Southeast University
2024
Non-Cartesian reconstruction is a crucial technique for accelerating MRI. However, traditional non-Cartesian algorithms often result in suboptimal image quality. Recently, deep neural networks have emerged as powerful tools MRI reconstruction, yet their application to acquisitions remains underexplored. Transformer-based approaches shown impressive performance super-resolution, prompting us explore potential this domain. To tackle these challenges, paper introduces novel framework that...
Purpose To investigate tricomponent analysis of human cortical bone using a multipeak fat signal model with 3D ultrashort TE Cones sequences on clinical 3T scanner. Methods Tricomponent fitting bound water, pore and content spectra was proposed for imaging bone. Three‐dimensional acquisitions combined were used to water fractions, as well fraction in Feasibility studies performed 9 specimens regions interest selected from the endosteum periosteum 4 circumferential regions. Microcomputed...
T1ρ has been extensively reported as a sensitive biomarker of biochemical changes in the nucleus pulposus (NP) and annulus fibrosis intervertebral discs (IVDs). However, no study cartilaginous endplates (CEPs) yet because relatively long echo times (TEs) conventional clinical sequences cannot effectively capture fast-decaying magnetic resonance signals CEPs, which have very short T2/T2*s. This can be overcome by using ultrashort time (UTE) acquisitions.Seventeen subjects underwent UTE with...
Many natural substances in nature exhibit magnetism, which has a significant impact on human life. However, accurately predicting, analyzing, and manipulating magnetic fields requires the use of precise mathematical simulation techniques. One such method is numerical modeling with element matrices, crucial for simulating analyzing complex physical models. In conventional mesh-based modeling, there always residual error, accuracy solution can be greatly affected by mesh density. This work...
Purpose To describe a new method for accurate T 1 measurement of cortical bone that fits the data sets both 3D UTE actual flip angle imaging (UTE‐AFI) and with single TR (UTE‐STR) simultaneously (UTE‐AFI‐STR). Theory Methods make constant values longitudinal mapping functions in signal equations UTE‐AFI UTE‐STR identical, same RF pulses angles were used. Therefore, there three unknowns equations. This was sufficient to fit data. Numerical simulation as well ex vivo studies performed validate...
3D printing is the latest developed rapid prototyping technology. It has been applied in field of industrial design, architecture, automotive, aerospace, medical industries, etc. In this paper, technology was used to made magnetic resonance imaging RF coils. The results shown that coil designed using following advantages: firstly, material PLA good insulation properties and low loss. with high Q value. Secondly, no impact on signals imaged sample. Thirdly, mechanical can be produced through...
A planar RF transmit coil used for vertical field magnetic resonance imaging (MRI) is presented in this paper. This kind of has been invented and several years. It a simple structure can produce homogeneous field. be easily designed as quadrature coil. In paper, we described the coil, characteristics We design 0.23T permanent MRI, then measured its power efficiency.
Matrix gradient coils (also named multi-coils or arrays) have been introduced for magnetic resonance imaging (MRI) and shimming with amount of coil elements. However, equipping each element a power amplifier is not always convenient because expensive cost complex control system. This study aims to analyze the effect elements on generating fields reduce number amplifiers, which fewer than similar system performance, low cost, simple matrix A 48-channels created generate <inline-formula...
The advantages of high-temperature superconducting radio frequency coils in improving signal-to-noise ratio magnetic resonance image has been confirmed. A rectangle receiving coil based on Bi2Sr2Ca2Cu2O3 tape was presented this paper. unloaded Q value the at 77K is 2400 which 7.8 times that copper room temperature. Phantom imaging experiments show images increased 140%. Human hand similar results. results rectangular aspect MR have a huge advantage. designed paper can improve homogeneity...
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Animal magnetic resonance imaging (MRI) systems typically deliver superior performance over conventional human MRI systems, making them a prevailing instrument in preclinical research. It is challenging to achieve the high of these animal due multifaceted nature various system components and complexity integration debugging. This work described design, fabrication, measurement 7 T system, which exhibits several highlights. Both magnet gradient assembly adopted an ultra-shielding strategy,...
This study introduces a non-destructive, quantitative method using low-field MRI to assess moisture mobility and content distribution in cherry tomatoes. developed an advanced 3D non-local mean denoising model enhance tissue feature analysis applied optimized TransUNet for structural segmentation, obtaining multi-echo data from six types. The T2 relaxation inversion was refined by integrating ACS-CIPSO algorithm. approach addresses the challenge of low signal-to-noise ratios images equipment...
To study how the fat affects quantification of magnetic susceptibility iron oxide nanoparticles (IONPs) according to chemical shift effects, especially at ultra-short echo times, simulation experiments were carried out in this paper. Numerical phantom IONPs solutions with six different concentrations was designed. Magnetic resonance imaging signals fractions (ffs) generated a multi-peak model. Quantitative mapping (QSM) calculated, and relationship between QSM value ff, as well selection, is...
A multi-channel digital subsystem for MR signal acquisition was designed to achieve parallel acquisition. The is based on FPGA,DSP and Power PC. Sample the magnetic resonance signals at a high speed simultaneously demodulate them directly. down conversion (DDC) chip (AD6636) decimate under DSP control. PC reads out I/Q data of each channel same time with sampling frequency up 100 MSPS. can be applied field 1T. Experiments show that four channels work well, filter parameters changed easily by...
Intensity nonuniformity correction is a necessary preprocessing method in MR images segmentation. Most of intensity methods need to remove the background images. In this paper, we propose segmentation based on region growing as instead threshold which wildly used methods. We tested lot and applied it N3 method. The experiments showed that performances better than
In this study, Shinnar-Le Roux algorithm is used for designing the radio frequency pulses in MRI order to reduce nonlinearity effect of Bloch equation. Some experiments are conducted show effectiveness by comparing difference between SLR pulsed slice profile and SINC profile. The experimental results indicates that pulse has smaller ripples more uniform than pulse. By reducing interference slices, can improve imaging quality a great extent.