Quasi-real-time telemedical checkup system for x-ray examination of UGI tract based on high-speed network

2000 ◽  
Author(s):  
Toshikazu Sakano ◽  
Takahiro Yamaguchi ◽  
Tatsuya Fujii ◽  
Akira Okumura ◽  
Isao Furukawa ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
X Ray ◽  
High Speed Network

A Real-Time Hard X-Ray Tomographic System Designed for HL-2A Fast Electron Bremsstrahlung Radiation

2020 ◽  
Author(s):  
Chen Yuan ◽  
Jun Wu
Keyword(s):  
Real Time ◽  
Fast Electron ◽  
High Speed ◽  
Lower Hybrid ◽  
Processing Unit ◽  
Bremsstrahlung Radiation ◽  
X Ray ◽  
The Real ◽  
Electron Bremsstrahlung ◽  
Plasma State

Abstract A real-time hard X-ray (HXR) tomographic system is designed for HL-2A tokamak, which is dedicated to the real-time tomography of fast electron bremsstrahlung radiation during the lower hybrid (LH) driven mode within the energy range of 20keV to 200keV. This system has realized the investigation of HXR energy from 12 different chords on the equatorial plane of the reaction region. The spatial and temporal resolutions of the system are 2cm and 10ms, separately. HXR detection is accomplished by a self-designed detector array, with a structure of 12 arc arranged cadmium telluride (CdTe) semiconductors and their corresponding collimators. The real-time HXR acquisition and processing is achieved by the main electronic system, which is comprised of a high speed analog-to-digital module and a high performance signal processing unit. Due to high HXR flux and the real-time demand in measurement, the HXR tomography is accomplished by several customized digital processing algorithms based on FPGA logic resources, such as the digital real-time spectrum measurement, the trapezoidal shaper, the pile up filter, and the baseline restorer, etc. This system has been proved to be qualified as a dependable platform of fast electron bremsstrahlung radiation research during LH mode on HL-2A, which provides indispensable parameters for plasma state during fusion reaction.

scholarly journals 4D imaging of sub-second dynamics in pore-scale processes using real time synchrotron x-ray tomography

2016 ◽  
Author(s):  
Katherine J. Dobson ◽  
Sophia B. Coban ◽  
Sam A. McDonald ◽  
Joanna Walsh ◽  
Robert Atwood ◽  
...  
Keyword(s):  
Real Time ◽  
High Frequency ◽  
High Speed ◽  
Motion Blur ◽  
Transport Processes ◽  
Fluid Distribution ◽  
Pore Scale ◽  
X Ray ◽  
Wide Range ◽  
In Situ Experiments

Abstract. A variable volume flow cell has been integrated with state-of-the-art ultra-high speed synchrotron x-ray tomography imaging. The combination allows the first real time (sub-second) capture of dynamic pore (micron) scale fluid transport processes in 4D (3D + time). With 3D data volumes acquired at up to 20 Hz, we perform in situ experiments that capture high frequency pore-scale dynamics in 5–25 mm diameter samples with voxel (3D equivalent of a pixel) resolution of 2.5 to 3.8 µm. The data are free from motion artefacts, can be spatially registered or collected in the same orientation making them suitable for detailed quantitative analysis of the dynamic fluid distribution pathways and processes. The method presented here are capable of capturing a wide range of high frequency non equilibrium pore-scale processed including wetting, dilution, mixing and reaction phenomena, without sacrificing significant spatial resolution. As well as fast streaming (continuous acquisition) at 20 Hz, it also allows larger-scale and longer term experimental runs to be sampled intermittently at lower frequency (time-lapse imaging); benefiting from fast image acquisition rates to prevent motion blur in highly dynamic systems. This marks a major technical breakthrough for quantification of high frequency pore scale processes: processes that are critical for developing and validating more accurate multiscale flow models through spatially and temporally heterogeneous pore networks.

scholarly journals Investigating thermal properties of and melting-induced structural changes in cold-drawn P(3HB) films with α- and β-structures using real-time X-ray measurements and high-speed DSC

Polymer ◽  
2016 ◽  
Vol 93 ◽  
pp. 181-188 ◽  
Author(s):  
Taizo Kabe ◽  
Toshihisa Tanaka ◽  
Hironori Marubayashi ◽  
Takaaki Hikima ◽  
Masaki Takata ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Real Time ◽  
High Speed ◽  
Structural Changes ◽  
X Ray

scholarly journals RT-SAD: Real-Time Sketch-Based Adaptive DDoS Detection for ISP Network

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Haibin Shi ◽  
Guang Cheng ◽  
Ying Hu ◽  
Fuzhou Wang ◽  
Haoxuan Ding
Keyword(s):  
Real Time ◽  
High Speed ◽  
Attack Detection ◽  
Detection Accuracy ◽  
Network Environment ◽  
The Real ◽  
Feature Extraction Method ◽  
Ddos Attack ◽  
High Speed Network ◽  
Ddos Attack Detection

With the great changes in network scale and network topology, the difficulty of DDoS attack detection increases significantly. Most of the methods proposed in the past rarely considered the real-time, adaptive ability, and other practical issues in the real-world network attack detection environment. In this paper, we proposed a real-time adaptive DDoS attack detection method RT-SAD, based on the response to the external network when attacked. We designed a feature extraction method based on sketch and an adaptive updating algorithm, which makes the method suitable for the high-speed network environment. Experiment results show that our method can detect DDoS attacks using sampled Netflowunder high-speed network environment, with good real-time performance, low resource consumption, and high detection accuracy.

Real-time image-content-based beamline control for smart 4D X-ray imaging

2016 ◽  
Vol 23 (5) ◽  
pp. 1254-1263 ◽  
Author(s):  
Matthias Vogelgesang ◽  
Tomas Farago ◽  
Thilo F. Morgeneyer ◽  
Lukas Helfen ◽  
Tomy dos Santos Rolo ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Image Data ◽  
Building Blocks ◽  
Level Control ◽  
Real Time Processing ◽  
X Ray ◽  
Level Data ◽  
High Level

Real-time processing of X-ray image data acquired at synchrotron radiation facilities allows for smart high-speed experiments. This includes workflows covering parameterized and image-based feedback-driven control up to the final storage of raw and processed data. Nevertheless, there is presently no system that supports an efficient construction of such experiment workflows in a scalable way. Thus, here an architecture based on a high-level control system that manages low-level data acquisition, data processing and device changes is described. This system is suitable for routine as well as prototypical experiments, and provides specialized building blocks to conduct four-dimensionalin situ,in vivoandoperandotomography and laminography.

Low-absorption, multi-layered scintillating material for high resolution real-time X-ray beam analysis

2015 ◽  
Vol 3 (19) ◽  
pp. 4954-4959 ◽  
Author(s):  
Antonio Pereira ◽  
Thierry Martin ◽  
Mariana Levinta ◽  
Christophe Dujardin
Keyword(s):  
High Resolution ◽  
Real Time ◽  
High Speed ◽  
X Ray ◽  
Resolution Capability ◽  
Beam Analysis ◽  
Imaging Resolution

A novel multi-layered screen for X-ray beam analysis at high speed with a high imaging resolution capability. The route toward real-time beam corrections for synchrotron experiments is presented.

scholarly journals Real-time damage characterization for GFRCs using high-speed synchrotron X-ray phase contrast imaging

2021 ◽  
Vol 207 ◽  
pp. 108565
Author(s):  
Jinling Gao ◽  
Nesredin Kedir ◽  
Cody D. Kirk ◽  
Julio Hernandez ◽  
Junyu Wang ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
Damage Characterization
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