A5100614168- Medical Imaging Techniques and Applications
- Advanced MRI Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Advanced X-ray and CT Imaging
- Advanced Radiotherapy Techniques
- Radiomics and Machine Learning in Medical Imaging
- Atomic and Subatomic Physics Research
- Anomaly Detection Techniques and Applications
- Imbalanced Data Classification Techniques
- Wireless Signal Modulation Classification
- Educational Technology and Assessment
- Crime Patterns and Interventions
- Neural Networks and Applications
- Higher Education and Teaching Methods
- Advanced Computational Techniques and Applications
- Image Retrieval and Classification Techniques
- Recommender Systems and Techniques
- Digital Radiography and Breast Imaging
- Wireless Communication Security Techniques
- Radiation Dose and Imaging
- EFL/ESL Teaching and Learning
- Advanced Neural Network Applications
- Sparse and Compressive Sensing Techniques
- Radar Systems and Signal Processing
- Acupuncture Treatment Research Studies
National University of Defense Technology
2021-2023
South China University of Technology
2022
University of South China
2022
Tongji University
2022
Institutes of Science and Development
2019-2022
Chinese Academy of Sciences
2019-2022
University of Chinese Academy of Sciences
2019-2022
Shandong University of Technology
2022
University of Pennsylvania
2012-2021
National Taiwan University
2018-2021
The collaboration of Yale, the University California, Davis, and United Imaging Healthcare has successfully developed NeuroEXPLORER, a dedicated human brain PET imager with high spatial resolution, sensitivity, built-in 3-dimensional camera for markerless continuous motion tracking. It depth-of-interaction time-of-flight resolutions, along 52.4-cm transverse field view (FOV) an extended axial FOV (49.5 cm) to enhance sensitivity. Here, we present physical characterization, performance...
The problem of attenuation correction (AC) for quantitative positron emission tomography (PET) had been considered solved to a large extent after the commercial availability devices combining PET with computed (CT) in 2001; single photon (SPECT) has seen similar development. However, stimulated particular by technical advances toward clinical systems and magnetic resonance imaging (MRI), research interest alternative approaches AC grown substantially last years. In this comprehensive...
The identification of malicious jamming pattern is significant for wireless communication system to adopt targeted anti-jamming approaches. Efficient patterns requires sufficient sample data and computing resources the complex electromagnetic environment. However, with use portable equipment emergency communications, it difficult ensure adequate resources. Against this background, letter focuses on based a small data-driven Naive Bayes classifier. main idea obtain approximate conditional...
Positron emission tomography (PET) is essential for non-invasive imaging of metabolic processes in healthcare applications. However, the use radiolabeled tracers exposes patients to ionizing radiation, raising concerns about carcinogenic potential, and warranting efforts minimize doses without sacrificing diagnostic quality.
Because of scarcity photons emitted from the heart, clinical cardiac SPECT imaging is mainly limited by photon statistics. The sub-optimal detection efficiency current systems not only limits quality but also makes more advanced potential applications difficult to be realized. We propose a high-performance system platform - C-SPECT, which has its sampling geometry optimized for in and quantity. C-SPECT stationary C-shaped gantry that surrounds left-front side patient's thorax. collimator...
Iterative reconstruction algorithms have been widely used in PET and SPECT emission tomography. Accurate modeling of photon noise propagation is crucial for quantitative tomography applications. Iteration-based methods developed only a few that explicit multiplicative update equations. And there are discrepancies between the iteration-based Fessler's fixed-point method because improper approximations. In this paper, we present unified theoretical prediction any penalized expectation...
The tea plant, Camellia sinensis (L.) O. Kuntz, is a perennial woody plant widely cultivated for the production of popular non-alcoholic beverage. To rapidly identify and evaluate two different color varieties (yellowish purplish), main phenotypic traits quality components were tested in present study. metabolic profiles shoots leaves also analyzed using liquid chromatography-tandem mass spectrometry.The yellowish variation had higher active level with respect to metabolism catechins,...
In positron emission tomography (PET) imaging, attenuation correction with accurate estimation is crucial for quantitative patient studies. Recent research showed that the sinogram can be determined up to a scaling constant utilizing time-of-flight information. The TOF-PET data naturally and efficiently stored in histo-image without information loss, radioactive tracer distribution reconstructed using DIRECT approaches. this paper, we explore transmission-less from histo-images. We first...
The point-spread-functions (PSFs) of reconstructed images can be deformed due to detector effects such as resolution blurring and parallax error, data acquisition geometry insufficient sampling or limited angular coverage in dual-panel PET systems, reconstruction imperfections/simplifications. PSF deformation decreases quantitative accuracy its spatial variation lowers consistency lesion uptake measurement across the imaging field-of-view (FOV). This a significant problem with dual panel...
Limited-angle data, such as data obtained from a dual-panel breast-PET scanner, result in substantial image blur directions coinciding with the missing cone of spectrum. On systems time-of-flight (TOF) capabilities, this is reduced given by TOF uncertainty, spectrum being correspondingly expanded into spectral cone. Modeling uncertainty reconstruction expected to deconvolve residual blurring. We have however observed that, tradeoff, de-blurring process also introduces ringing artifacts at...
Due to the unique geometry, dual-panel PET scanners have many advantages in dedicated breast imaging and on-board applications since compact can be combined with other treatment modalities. The major challenges of are limited-angle problem data truncation, which cause artifacts due incomplete sampling. time-of-flight (TOF) information a promising solution reduce these artifacts. TOF planogram is native format for scanners, non-TOF 3D extension linogram. planograms five-dimensional while...
Recent research has showed that attenuation images can be determined from emission data, jointly with activity images, up to a scaling constant when utilizing the time-of-flight (TOF) information. We aim develop practical CT-less joint reconstruction for clinical TOF PET scanners obtain quantitatively accurate and images. In this work, we present of based on MLAA (maximum likelihood activity) autonomous determination scatter estimation data. Our idea is use selected volume interest (VOI) in...
Purpose: Spatial resolution in positron emission tomography (PET) is still a limiting factor many imaging applications. To improve the spatial for an existing scanner with fixed crystal sizes, mechanical movements such as wobbling and object shifting have been considered PET systems. Multiple acquisitions from different positions can provide complementary information increased sampling. The objective of this paper to explore efficient useful reconstruction framework reconstruct...
Fully 3D time-of-flight (TOF) PET scanners offer the potential of previously unachievable image quality in clinical imaging. TOF measurements add another degree redundancy for cylindrical and make photon-limited TOF-PET imaging more robust than non-TOF The data space is five-dimensional with two degrees redundancy. Previously, consistency equations were used to characterize data. In this paper, we first derive Fourier Fourier-John equation based on generalized projection-slice theorem; three...
We have derived an analytic geometric transfer function (GTF) for a convergent slit-slat collimator that treats the parallel as special case. The effective point spread (EPSF) is then from GTF through Fourier transform. results of these derivations give accurate description complete response includes effects shape and orientation slit slats. also exact approximate sensitivity formulae spatial resolution using EPSF.
Fully 3-D time-of-flight (TOF) PET scanners offer the potential of previously unachievable image quality in clinical imaging. Timing calibration is critical to achieve best possible timing resolution, maximize true counts and minimize random counts. In this paper, we consider a data-driven based on TOF data consistency. First, derive two consistency equations for parameterized native detector coordinates where each line response (LOR) represented by azimuthal angles axial crystals detecting...
With the popular application of direct part mark (DPM) technology, DPM code inspection has been a hot issue in machine vision. It mainly consists two steps, namely, localization and decoding. is key complex step inspection. However, traditional methods suffer from imaging environment, involving various background, illumination, distance, exposures. Furthermore, target itself, i.e., code, could be severely polluted or worn. Aiming at improving performance robustness localization, an efficient...
Positron emission tomography (PET) has become an important modality in medical and molecular imaging. However, most PET applications, the resolution is still mainly limited by physical crystal sizes or detector's intrinsic spatial resolution. To achieve images with better a central region of interest (ROI), we have previously proposed using collimation scanners. The collimator designed to partially mask detector crystals detect lines response (LORs) within fractional crystals. A sequence...