A5045197478- Advanced MRI Techniques and Applications
- Advanced NMR Techniques and Applications
- Atomic and Subatomic Physics Research
- Obstructive Sleep Apnea Research
- Neuroscience of respiration and sleep
- Liver Disease Diagnosis and Treatment
- Advanced Neuroimaging Techniques and Applications
- Medical Imaging Techniques and Applications
- NMR spectroscopy and applications
- Head and Neck Surgical Oncology
- Medical Image Segmentation Techniques
- Meningioma and schwannoma management
- Advanced X-ray Imaging Techniques
- Gastroesophageal reflux and treatments
- Photoacoustic and Ultrasonic Imaging
- Traditional Chinese Medicine Studies
- Image and Signal Denoising Methods
- Voice and Speech Disorders
- Neurosurgical Procedures and Complications
- Ultrasound and Hyperthermia Applications
Zhangzhou Municipal Hospital of Fujian Province
2022
Fujian Medical University
2022
University of Southern California
2013-2018
Alltech (United States)
2015
Purpose To investigate the feasibility of real‐time 3D magnetic resonance imaging (MRI) with simultaneous recording physiological signals for identifying sites airway obstruction during natural sleep in pediatric patients sleep‐disordered breathing. Methods Experiments were performed using a three‐dimensional Fourier transformation (3DFT) gradient echo sequence prospective undersampling based on golden‐angle radial spokes, and L1‐norm regularized iterative self‐consistent parallel...
To develop and demonstrate a real-time MRI method for assessing upper airway collapsibility in sleep apnea.Data were acquired on clinical 3 Tesla scanner using radial CAIPIRIHNA sequence with modified golden angle view ordering reconstructed parallel imaging compressed sensing temporal finite difference sparsity constraint. Segmented areas together synchronized facemask pressure used to calculate compliance projected closing pressure, Pclose , at four axial locations along the airway. This...
Purpose To evaluate an independent linear model for gradient acoustic noise on a conventional MRI scanner, and to explore implications reduction in routine imaging. Methods Acoustic generated from each physical axis was modeled as the prescribed waveform passed through time‐invariant system. Homogeneity superposition properties were experimentally determined. We also developed new method correct relative time shifts between measured impulse responses different axes. Model accuracy determined...
Objective To develop and evaluate a framework for simulating low-field proton-density weighted MRI acquisitions based on high-field acquisitions, which could be used to predict the minimum B0 field strength requirements techniques. This would particularly useful in evaluation of de-noising constrained reconstruction Materials Methods Given raw data, lower can simulated signal noise scaling with strength. Certain assumptions are imposed simulation their validity is discussed. A validation...
Purpose To provide anisotropic field‐of‐view (FOV) support for golden angle radial imaging. Theory and Methods In imaging, uniform spoke density leads to a circular FOV, which is excessive objects with dimensions. Larson et al previously showed that the angular k‐space can be determined by desired FOV. We show conventional sampling deployed in an angle‐normalized space transformed back such nonuniform preserved arbitrary temporal window length. Elliptical FOVs were used illustrate this...
The high-performance low-field magnetic resonance imaging (MRI) system, equipped with modern hardware and contemporary capabilities, has garnered interest within the MRI community in recent years. It also been proven to have unique advantages over high-field both physical cost aspects. However, for susceptibility weighted (SWI), low signal-to-noise ratio long echo time inherent at field hinder SWI from being applied clinical applications. This work optimized protocol select suitable...
The aim of the current study was to improve temperature-monitoring precision using multiecho proton resonance frequency shift-based thermometry with view-sharing acceleration for MR-guided laser interstitial thermal therapy (MRgLITT) on a 0.5-T low-field MR system. Both and speed temperature measurement clinical MRgLITT treatments suffer at low field, due reduced image signal-to-noise ratio (SNR), decreased temperature-induced phase changes, limited RF receiver channels. In this work,...
The use of real-time magnetic resonance imaging (MRI) for the evaluation during sleep-related respiratory events can lead to better understanding airway dynamics.To investigate dynamic anatomy upper central apnea.The study included obese adolescents who snore and were otherwise healthy. Subjects underwent an overnight baseline polysomnogram. slept a 24-minute MRI scan wearing full face mask attached pneumotach. Sleep versus wakefulness was inferred from heart rate patterns. Central apneas...
Objective. To compare of the efficacy and safety neuroendoscopic endonasal transsphenoidal surgeries intracranial endoscopic pterional approach in resection tuberculum sellae meningioma. Methods. From January 2014 to June 2021, 60 patients with meningioma diagnosed treated our hospital were enrolled randomly divided into study group control group. The was removed by group, while used chi-square test differences tumor complete rate, visual acuity improvement total effective rate at 3 months...
Earlier diagnosis of nonalcoholic fatty liver disease (NAFLD) is important to prevent progression the disease. Recently, a low-cost portable magnetic resonance (MR) system was developed as point-of-care screening tool for in vivo fat quantification. However, subcutaneous may confound quantification, particularly NAFLD population. In this work, we propose novel radiofrequency (RF) coil design composed set "saturation" coils sandwiching main improve human By comparison with conventional MR...
Earlier diagnosis of non-alcoholic fatty liver disease (NAFLD) becomes important to prevent the progression. Recently, a low-cost portable MR system was developed as point-of-care screening tool for in vivo fat quantification. However, subcutaneous may confound live quantification, particularly NAFLD susceptible population. In this work, we propose novel RF coil design composed main target sandwiching set “saturation” improve human We demonstrate capability and...
Owing to hardware advancements, a resurgence of interest has emerged in low field MRI systems recently. However, the intrinsic signal noise ratio (SNR) due magnetic strength hindered acquisition high-resolution images on systems. Here we propose non-local robust PCA-based method jointly denoise multi-contrast acquired 0.5 T system. In-vivo brain data are used test proposed method. The results show that outperforms BM3D and BM4D denoising methods.