A5101730022- Cardiac Imaging and Diagnostics
- Advanced MRI Techniques and Applications
- Cerebrovascular and Carotid Artery Diseases
- Digital Radiography and Breast Imaging
- Cardiovascular Function and Risk Factors
- AI in cancer detection
- Atomic and Subatomic Physics Research
- Acute Ischemic Stroke Management
- Pulmonary Hypertension Research and Treatments
- Urban Design and Spatial Analysis
- Ultrasound and Hyperthermia Applications
- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Advanced Neuroimaging Techniques and Applications
- Advanced Data Compression Techniques
- Cardiac pacing and defibrillation studies
- Neural and Behavioral Psychology Studies
- Cardiovascular Disease and Adiposity
- Ideological and Political Education
- Electron Spin Resonance Studies
- Aortic Disease and Treatment Approaches
- Medical Imaging Techniques and Applications
- Cardiovascular Health and Disease Prevention
- Infrared Thermography in Medicine
- Multiple Sclerosis Research Studies
Capital Medical University
2010-2024
Wuhan University
2012-2017
Siemens Healthcare (United States)
2012-2015
Cedars-Sinai Medical Center
2012-2015
Itron (United States)
2014
National Bureau of Statistics of China
2014
Creative Commons
2014
Wan Fang Hospital
2013
Novem (Netherlands)
2013
Shenzhen Institutes of Advanced Technology
2012
Abstract Purpose: To assess blood flow velocities and spatial distribution of aortic Reynolds numbers in vivo using flow‐sensitive magnetic resonance imaging (MRI) probe for instabilities along the aorta based on an empirical model physiological pulsatile flow. Materials Methods: Thirty young healthy volunteers were examined by MRI at eight planes distributed thoracic aorta. Flow, Womersley, Strouhal, Reynolds, critical calculated used to presence instabilities. Results: The average peak...
Background and Purpose— Early diagnosis of cerebral venous thrombosis (CVT) is currently a major clinical challenge. We proposed novel magnetic resonance black-blood thrombus imaging technique (MRBTI) for detection quantification CVT. Methods— MRBTI was performed on 23 patients with proven CVT 24 negative confirmed by conventional techniques. Patients were divided into 2 groups based the duration onset: ≤7 days (group 1) between 7 30 2). Signal/noise ratio calculated detected thrombus,...
64-MDCT Coronary Angiography: Phantom Study of Effects Vascular Attenuation on Detection StenosisXiaolu Fei1, Xiangying Du1, Qi Yang1, Yun Shen2, Pengyu Li1, Jingmin Liao2 and Kuncheng Li1Audio Available | Share
Whole-heart coronary magnetic resonance angiography (MRA) is a promising method for noninvasive, radiation-free detection and exclusion of obstructive artery disease; however, the required imaging time robustness technique are not yet satisfactory. We evaluated value whole-heart MRA at 3.0T using 32-channel cardiac coil, which reduces image-acquisition times hence allows to increase clinical throughput.A total 110 consecutive patients with suspected disease referred clinically indicated...
Purpose To achieve whole‐heart coronary magnetic resonance angiography (MRA) with (1.0 mm) 3 spatial resolution and 5 min of free‐breathing scan time. Methods We used an electrocardiograph‐gated, T2‐prepared fat‐saturated balanced steady state free precession sequence 3DPR trajectory for data acquisition 100% gating efficiency. For image reconstruction, we a self‐calibrating iterative SENSE scheme integrated retrospective motion correction. performed healthy volunteer study to compare the...
Abstract Purpose To demonstrate a novel contrast mechanism for imaging the vessel wall and calcification using susceptibility‐weighted (SWI). Materials Methods Eighteen subjects were imaged with multidetector computed tomography (MDCT) high‐resolution SWI at 3T. The parameters optimized to allow best visualization of femoral artery lumen arterial in magnitude phase images, respectively. SWI‐filtered data used evaluate diamagnetic susceptibility putative calcification. Imaging was performed...
Comprehensive understandings to the built environment especially urban form is a prerequisite for building smart city. This paper based on computational methods examine fabric of Hankou, China, as case study. Quantitative and comparative analyses are involved understand characteristics block scale, where massive demolition new construction coincide with existing historical context. Five indicators defined (i.e., density, compactness, fragmentation, variance, cohesion) conduct study 83...
Aim . To investigate the clinical relevance of plaque’s morphological characteristics and distribution pattern using 3.0 T high-resolution magnetic resonance imaging (HRMRI) in patients with moderate or severe basilar artery (BA) atherosclerosis stenosis. Materials Methods Fifty-seven (33 symptomatic 24 asymptomatic patients) were recruited for HRMRI scan; all them had >50% stenosis on BA. The intraplaque hemorrhage (IPH), contrast-enhancement pattern, BA plaques compared between groups....
Chronic obstructive pulmonary disease (COPD) is often associated with changes of the structure and function right ventricle (RV). Therefore, assessment ventricular myocardial mass (MM) clinically important for evaluation severity COPD, which may provide an objective basis therapeutic strategy.To assess RV MM in patients mild to severe COPD using magnetic resonance imaging (MRI).We prospectively studied 49 determined by test (PFT). Using Global Initiative classification, were divided into...
This study was designed to evaluate the value of contrast-enhanced whole-heart coronary MRA (CMRA) at 3.0T in depicting cardiac venous anatomy. In resynchronization therapy (CRT), left ventricular (LV) pacing is achieved by positioning LV lead one tributaries sinus (CS). Pre-implantation knowledge anatomy may help determine whether transvenous placement for CRT feasible. Images 51 subjects undergoing CMRA were retrospectively analyzed. Data acquisition performed using...
Objectives: The goal of this work was to reduce the scan time contrast-enhanced whole-heart coronary magnetic resonance angiography (MRA) by using a gradient echo interleaved planar imaging (GRE-EPI) sequence at 3 T field strength. Materials and Methods: A GRE-EPI optimized acquire MRA T. First-order phase correction used for alignment odd even echoes in train. Single dual reference techniques estimation linear parameters were evaluated both phantom volunteer studies. readout combined with...
The underlying transcriptomic signatures driving brain functional alterations in MS and neuromyelitis optica spectrum disorder (NMOSD) are still unclear.
Abstract Purpose: To evaluate the performance of four‐dimensional (4D) flow‐sensitive MRI in thoracic aorta using 12‐ and 32‐channel coils parallel imaging. Materials Methods: 4D was performed 11 healthy volunteers at 3 Tesla (T) different imaging (GRAPPA) accelerations (R): (i) 12‐channel coil, R = 2; (ii) 3; (iii) 3. The quantitative analysis included SNR, residual velocity divergence length curvature traces (streamlines pathlines) as used for 3D flow visualization. In addition,...
In rapidly changing Chinese cities, the conflict between conservation and redevelopment appears acute complex. This paper uses Hankow historic concession area as case study to examine evolution in ideology, mechanisms, policy planning of Wuhan. The findings are based on multiple field visits, semi-structured interviews a literature review. It explores roles various participants who brought these changes, such local central governments, state-owned private enterprises public, provide...
The neuropsychological tests in patients with internal carotid artery (ICA) demonstrated cognitive deficits associated frontal lobe dysfunction, but the pathophysiological mechanism of memory impairment is not fully understood. This study evaluated relationship between degree ICA stenosis and activations induced by working (WM) task using fMRI. fMRI data 21 unilateral (left/right, 11/10) controls were analyzed. In comparison controls, significant middle gyrus (MFG) bilaterally, particularly...
Objectives To evaluate the clinical value of noise-based tube current reduction method with iterative reconstruction for obtaining consistent image quality dose optimization in prospective electrocardiogram (ECG)-triggered coronary CT angiography (CCTA). Materials and Methods We performed a randomized study evaluating 338 patients undergoing CCTA ECG-triggering. Patients were randomly assigned to fixed filtered back projection (Group 1, n = 113), 2, 109) or 3, 116). Tube voltage was at 120...
Abstract The conventional phase difference method for MR thermometry suffers from disturbances caused by the presence of lipid protons, motion‐induced error, and field drift. A signal model is presented with multi‐echo gradient echo (GRE) sequence using a fat as an internal reference to overcome these problems. fit water signals extended Prony algorithm Levenberg‐Marquardt estimate chemical shifts between which contain temperature information. noise analysis was conducted Cramer‐Rao lower...
Abstract Whole‐heart coronary magnetic resonance angiography is a promising method for detecting artery disease. However, the imaging time relatively long (typically 10–15 min). The goal of this study was to implement radial echo planar sequence contrast‐enhanced whole‐heart angiography, with aim combining scan efficiency motion insensitivity k ‐space sampling. A self‐calibrating phase correction technique used correct off‐resonance effects, trajectory measurement errors, and variable...
Background: The JPEG 2000 compression technique has recently been introduced into the medical imaging field. It is critical to understand effects of this on detection breast masses digitized images by human observers. Purpose: To evaluate whether lossless and lossy techniques affect diagnostic results malignant benign mammograms. Material Methods: A total 90 screen-film mammograms including craniocaudal lateral views obtained from 45 patients were selected two non-observing radiologists. Of...
Abstract Purpose: To explore the value of proton magnetic resonance spectroscopy imaging ( 1 H‐MRSI) in patients with stenosis or occlusion internal carotid artery (ICA) / middle cerebral (MCA). Materials and Methods: Fifty noninfarcted unilateral ICA/MCA were included our study. In meantime, 25 infarction healthy control subjects enrolled. All underwent H‐MRSI. Cerebral metabolic changes studied compared infarcted as well subjects. Results: 50 N‐acetylaspartate (NAA) decreased choline...