scholarly journals Real-Time Volumetric Ultrasound Research Platform with 1024 Parallel Transmit and Receive Channels

2021 ◽  
Vol 11 (13) ◽  
pp. 5795
Author(s):  
Christoph Risser ◽  
Holger Hewener ◽  
Marc Fournelle ◽  
Heinrich Fonfara ◽  
Selina Barry-Hummel ◽  
...  
Keyword(s):  
Therapy Monitoring ◽  
General Purpose ◽  
Ultrasound Contrast Agents ◽  
Individual Element ◽  
Volumetric Imaging ◽  
Fully Integrated ◽  
Transmission Parameters ◽  
Parallel Transmit ◽  
Scanning Strategies ◽  
Volumetric Ultrasound

Volumetric ultrasound imaging is of great importance in many medical fields, especially in cardiology, but also in therapy monitoring applications. For development of new imaging technologies and scanning strategies, it is crucial to be able to use a hardware platform that is as free and flexible as possible and does not restrict the user in his research in any way. For this purpose, multi-channel ultrasound systems are particularly suitable, as they are able to control each individual element of a matrix array without the use of a multiplexer. We set out to develop a fully integrated, compact 1024-channel ultrasound system that provides full access to all transmission parameters and all digitized raw data of each transducer element. For this purpose, we synchronize four research scanners of our latest “DiPhAS” ultrasound research system generation, each with 256 parallel channels, all connected to a single PC on whose GPUs the entire signal processing is performed. All components of the system are housed in a compact, movable 19-inch rack. The system is designed as a general-purpose platform for research in volumetric imaging; however, the first-use case will be therapy monitoring by tracking radiation-sensitive ultrasound contrast agents.

scholarly journals THE ROLE OF CONTRAST-ENHANCED ULTRASONOGRAPHY IN EARLY RHEUMATOID ARTHRITIS

2015 ◽  
Vol 24 (3) ◽  
pp. 132-140
Author(s):  
Maria-Magdalena Tamas ◽  
◽  
Nicolae Rednic ◽  
Simon Siao-Pin ◽  
Simona Rednic ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Therapy Monitoring ◽  
Severe Disease ◽  
Power Doppler ◽  
Ultrasound Contrast Agents ◽  
Small Vessels ◽  
Appropriate Treatment ◽  
Contrast Enhanced ◽  
Contrast Enhanced Ultrasonography

The diagnosis of rheumatoid arthritis (RA) is, most often, challenging, due to the variety of clinical features and to the absence of gold standard tests for diagnosing this disease. Early diagnosis as well as the identification of poor prognostic markers will lead to an early, appropriate treatment that will prevent the evolution towards a severe disease, offering the chance for a complete remission. Ultrasonography (US), used as an extension of clinical examination, helps in the early classification of the disease. Power Doppler is important for quantification of synovial inflammation, both at diagnosis and during therapy monitoring, but has limits in detecting blood flow in small vessels. Ultrasound contrast-agents improve visualization of vascularity and allow a better characterization and quantification of synovial pannus inflammation. We aim to discuss the role of contrast-enhanced ultrasonography (CEUS) in the diagnosis and follow-up of early RA.

scholarly journals sDSPL - Towards a benchmark for general-purpose task evaluation in domestic service robots

2021 ◽  
Author(s):  
Luis Contreras ◽  
Yosuke Matsusaka ◽  
Takashi Yamamoto ◽  
Hiroyuki Okada
Keyword(s):  
General Purpose ◽  
Domestic Service ◽  
Service Robots ◽  
Annual Conference ◽  
Domestic Environment ◽  
Fully Integrated ◽  
The World ◽  
Robot Systems

Although the skills required to solve isolated robotics problems are reaching amazing performances recently, we propose the evaluation of such individual solutions in fully integrated robot systems tested in real daily situations like those presented at international robotics competitions. The simulation Domestic Standard Platform League (sDSPL), which utilizes the HSR simulator developed for the World Robot Summit, surges from the necessity to standardise and spread the research on Domestic Service Robots where a series of solutions can be tested to solve a general-purpose task in a standard domestic environment; this approach has been proven successful at several international competitions, namely, the RoboCup Japan Open, the Mexican Tournament of Robotics, and the RoboCup 2021.<div><br></div><div>**This work was accepted to The 39th Annual Conference of the Robotics Society of Japan.<br></div>

Fully automated, on-site isolation of cfDNA from whole blood for cancer therapy monitoring

Lab on a Chip ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 1320-1329 ◽  
Author(s):  
Chi-Ju Kim ◽  
Juhee Park ◽  
Vijaya Sunkara ◽  
Tae-Hyeong Kim ◽  
Yongjin Lee ◽  
...  
Keyword(s):  
Targeted Therapy ◽  
Cancer Therapy ◽  
Real Time ◽  
Whole Blood ◽  
Therapy Monitoring ◽  
Real Time Monitoring ◽  
Site Isolation ◽  
Mutation Status ◽  
Fully Integrated

Fully integrated lab-on-a-disc for cfDNA isolation allows real-time monitoring of tumor mutation status during targeted therapy.

scholarly journals FPGA implementation of RS codec with interleaver in DVB-T using VHDL

2017 ◽  
Vol 6 (4) ◽  
pp. 171
Author(s):  
Sara Kamar ◽  
Abdelmoniem Fouda ◽  
Abdelhalim Zekry ◽  
Abdelmoniem Elmahdy
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Digital Transmission ◽  
General Purpose ◽  
Error Correcting Codes ◽  
Digital Television ◽  
Random Errors ◽  
Fully Integrated ◽  
Reed Solomon Code ◽  
Channel Errors

Digital television (DTV) provides a huge amount of information to many users at low cost. Recently, it can be packaged and fully integrated into completely digital transmission networks. Reed-Solomon code (RS) is one type of error correcting codes that can be used to enhance the performance of DTV. Interleaving/deinterleaving process enhances the performance of channel errors by spreading out random errors, very high-speed hardware description language (VHDL) is used in electronic design automation. It can be used as a general-purpose parallel programming language.This paper presents VHDL program for Reed-Solomoncodec (204, 188) and convolutional interleaver/deinterleaver, used in Digital Video Broadcasting-terrestrial system (DVB-T), according to ETSI EN 300 744 V1.5.1 standard. The VHDL programs are implemented on Xilinx 12.3 ISE and then simulated and tested via ISE simulator then the code is synthesized on FPGA device the results are compared with IP core for Xilinx 12.3 ISE, which gives the same results.

scholarly journals sDSPL - Towards a benchmark for general-purpose task evaluation in domestic service robots

2021 ◽  
Author(s):  
Luis Contreras ◽  
Yosuke Matsusaka ◽  
Takashi Yamamoto ◽  
Hiroyuki Okada
Keyword(s):  
General Purpose ◽  
Domestic Service ◽  
Service Robots ◽  
Annual Conference ◽  
Domestic Environment ◽  
Fully Integrated ◽  
The World ◽  
Robot Systems

Although the skills required to solve isolated robotics problems are reaching amazing performances recently, we propose the evaluation of such individual solutions in fully integrated robot systems tested in real daily situations like those presented at international robotics competitions. The simulation Domestic Standard Platform League (sDSPL), which utilizes the HSR simulator developed for the World Robot Summit, surges from the necessity to standardise and spread the research on Domestic Service Robots where a series of solutions can be tested to solve a general-purpose task in a standard domestic environment; this approach has been proven successful at several international competitions, namely, the RoboCup Japan Open, the Mexican Tournament of Robotics, and the RoboCup 2021.<div><br></div><div>**This work was accepted to The 39th Annual Conference of the Robotics Society of Japan.<br></div>

scholarly journals A General Purpose Robotic Hand Exoskeleton With Series Elastic Actuation

2019 ◽  
Vol 11 (6) ◽  
Author(s):  
Eric M. Refour ◽  
Bijo Sebastian ◽  
Raghuraj J. Chauhan ◽  
Pinhas Ben-Tzvi
Keyword(s):  
Healthcare Services ◽  
General Purpose ◽  
Robotic Hand ◽  
Linkage Mechanism ◽  
User Friendliness ◽  
Fully Integrated ◽  
Control Paradigm ◽  
Hand Exoskeleton ◽  
Experimental Trials ◽  
Series Elastic

Abstract This paper describes the design and control of a novel hand exoskeleton. A subcategory of upper extremity exoskeletons, hand exoskeletons have promising applications in healthcare services, industrial workplaces, virtual reality, and military. Although much progress has been made in this field, most of the existing systems are position controlled and face several design challenges, including achieving minimal size and weight, difficulty enforcing natural grasping motions, exerting sufficient grip strength, ensuring the safety of the users hand, and maintaining overall user friendliness. To address these issues, this paper proposes a novel, slim, lightweight linkage mechanism design for a hand exoskeleton with a force control paradigm enabled via a compact series elastic actuator. A detailed design overview of the proposed mechanism is provided, along with kinematic and static analyses. To validate the overall proposed hand exoskeleton system, a fully integrated prototype is developed and tested in a series of experimental trials.

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

FR-IR Molecular Microanalysis System

1990 ◽  
Vol 48 (2) ◽  
pp. 270-271
Author(s):  
John A. Reffner ◽  
William T. Wihlborg
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Integrated System ◽  
Morphological Examination ◽  
Fully Integrated ◽  
Ir Microscopy ◽  
Normal Functions ◽  
Infrared Microspectroscopy ◽  
Infrared Spectral ◽  
Ft Ir

The IRμs™ is the first fully integrated system for Fourier transform infrared (FT-IR) microscopy. FT-IR microscopy combines light microscopy for morphological examination with infrared spectroscopy for chemical identification of microscopic samples or domains. Because the IRμs system is a new tool for molecular microanalysis, its optical, mechanical and system design are described to illustrate the state of development of molecular microanalysis. Applications of infrared microspectroscopy are reviewed by Messerschmidt and Harthcock.Infrared spectral analysis of microscopic samples is not a new idea, it dates back to 1949, with the first commercial instrument being offered by Perkin-Elmer Co. Inc. in 1953. These early efforts showed promise but failed the test of practically. It was not until the advances in computer science were applied did infrared microspectroscopy emerge as a useful technique. Microscopes designed as accessories for Fourier transform infrared spectrometers have been commercially available since 1983. These accessory microscopes provide the best means for analytical spectroscopists to analyze microscopic samples, while not interfering with the FT-IR spectrometer’s normal functions.

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