Active echo signals and image optimization techniques via software filter correction of ultrasound system

2022 ◽  
Vol 188 ◽  
pp. 108519
Author(s):  
Unsang Jung ◽  
Hojong Choi
Keyword(s):  
Optimization Techniques ◽  
Image Optimization ◽  
Ultrasound System

Basics of Ultrasound

2016 ◽  
Author(s):  
Antoun Nader ◽  
Greesh John ◽  
Mark C. Kendall
Keyword(s):  
Biological Effects ◽  
Ultrasound Image ◽  
Optimization Techniques ◽  
Ultrasound Wave ◽  
Target Tissue ◽  
Rapid Improvement ◽  
Image Optimization ◽  
Probe Selection ◽  
Ultrasound Technology ◽  
Needle Trajectory

This chapter discusses the basics of ultrasound wave emission and capture, probe selection, image-optimization techniques, artifact generation, and potential adverse biological effects. The rapid improvement of ultrasound image processing allows a dynamic exam with a reliable real-time assessment of the target tissue, the needle trajectory, and the injectate deposition. This, combined with ease of portability and absence of radiation, means the use of ultrasound guidance in regional anesthesia and interventional pain management is rapidly expanding. Basic understanding of ultrasound knobology principles is mandated by most societies using ultrasound technology and is essential for optimal use.

scholarly journals Intuitive Real-Time Multidimensional Diagnostic Sonographic Image Optimization Technology

2017 ◽  
Vol 34 (2) ◽  
pp. 98-104
Author(s):  
Giampaolo Borreani ◽  
Carlo Biagini ◽  
Roberto Pesce ◽  
Luca Bombino ◽  
Leonardo Forzoni
Keyword(s):  
Real Time ◽  
Control Panel ◽  
System Control ◽  
Diagnostic Confidence ◽  
Work Related ◽  
Image Optimization ◽  
Time Scanning ◽  
Work Related Musculoskeletal Disorders ◽  
Increase Productivity ◽  
Ultrasound System

Diagnostic medical sonography (DMS) is an operator and patient dependent examination where anatomical and hemodynamic analysis settings have to be adjusted in real-time while scanning. Several techniques were developed so far to perform the DMS acquisition and post processing adjustments quickly and to maximize their easiness. A new easyMode Technology was recently implemented in order to drastically simplify the operator system setup to only three macro-parameters related to the desired effect in terms of: resolution/penetration, contrast/soft, smooth/sharp. A multidimensional algorithm varies simultaneously several internal system parameters to modify the image in the direction of the macro-parameter varied by the user. No prior knowledge of ultrasound physics or technology is required to adjust the macro-parameter, the effects of which are directly visible on the sonographic image in real-time (for instance, to optimize the level of smoothness with respect to sonographic image contrast). The aim of the easyMode is to increase productivity, reduce sonographer’s work-related musculoskeletal disorders due to extensive use of the ultrasound system control panel, and increase diagnostic confidence based on the intuitive optimization of the sonographer’s desired effect, instead of an engineering approach to real-time scanning optimization.

scholarly journals TRENDS & TECHNOLOGY

2019 ◽  
Author(s):  
Dr Tariq
Keyword(s):  
Continuous Wave ◽  
Continuous Wave Doppler ◽  
Image Optimization ◽  
Ultrasound System ◽  
Pacs System

The new touch controlled TE7 ultrasound system has a 15 inch anti-glare touchscreen, preset image optimization options, continuous wave Doppler, and the ability to accept a TEE transducer. The system is also capable of performing needle tracking and comes with built-in nerve exam presets.The device features a speedy three second boot time from standby, can run for two hours on a battery, and has a built in WIFI  to interface with the hospital’s PACS system.

Remote Evaluation of a Wireless Ultrasound Probe

2021 ◽  
Vol 37 (2) ◽  
pp. 114-119
Author(s):  
Daniel A. Merton ◽  
Shobana Nair ◽  
Jonathan A. Gaev
Keyword(s):  
Linear Array ◽  
Video Conferencing ◽  
Optimization Techniques ◽  
Ultrasound Transducer ◽  
Ultrasound Probe ◽  
Human Models ◽  
Image Optimization ◽  
Ambient Lighting ◽  
Array Transducer ◽  
Remote Evaluation

Objective: To determine whether an evaluation of a wireless ultrasound transducer could be completed remotely. Materials and Methods: Video conferencing was used for communication between a sonographer and a minimally trained operator to allow evaluation of a flat linear array transducer that communicated via Wi-Fi with a smartphone and the probe vendor’s software. A tissue-mimicking phantom was used for quantitative testing, while scanning human models allowed qualitative assessments. Video conferencing using a tablet camera directed at the smartphone screen or transducer allowed the sonographer to view images, and guide the operator on probe positioning, and image optimization techniques. Results: All tests were completed during three 60-minute video conferences. Assessments of models were more challenging than tests using the phantom. The glare from ambient lighting sometimes made it difficult to view the smartphone screen. A connectivity limitation, which has since been resolved, prevented simultaneous use of video conferencing and the transducer software on the smartphone. Conclusion: This study confirmed that an evaluation of a wireless ultrasound transducer can be successfully performed remotely.

Scanning Tunneling Microscopy of Amorphous Carbon Films

1990 ◽  
Vol 48 (1) ◽  
pp. 318-319
Author(s):  
Mircea Fotino ◽  
D.C. Parks
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Amorphous Carbon ◽  
Carbon Films ◽  
Atomic Scale ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Amorphous Carbon Films ◽  
Image Optimization ◽  
Step Procedure ◽  
Stm Images

In the last few years scanning tunneling microscopy (STM) has made it possible and easily accessible to visualize surfaces of conducting specimens at the atomic scale. Such performance allows the detailed characterization of surface morphology in an increasing spectrum of applications in a wide variety of fields. Because the basic imaging process in STM differs fundamentally from its equivalent in other well-established microscopies, good understanding of the imaging mechanism in STM enables one to grasp the correct information content in STM images. It thus appears appropriate to explore by STM the structure of amorphous carbon films because they are used in many applications, in particular in the investigation of delicate biological specimens that may be altered through the preparation procedures.All STM images in the present study were obtained with the commercial instrument Nanoscope II (Digital Instruments, Inc., Santa Barbara, California). Since the importance of the scanning tip for image optimization and artifact reduction cannot be sufficiently emphasized, as stressed by early analyses of STM image formation, great attention has been directed toward adopting the most satisfactory tip geometry. The tips used here consisted either of mechanically sheared Pt/Ir wire (90:10, 0.010" diameter) or of etched W wire (0.030" diameter). The latter were eventually preferred after a two-step procedure for etching in NaOH was found to produce routinely tips with one or more short whiskers that are essentially rigid, uniform and sharp (Fig. 1) . Under these circumstances, atomic-resolution images of cleaved highly-ordered pyro-lytic graphite (HOPG) were reproducibly and readily attained as a standard criterion for easily recognizable and satisfactory performance (Fig. 2).

Review on the aerodynamics of intermediate compressor duct

2020 ◽  
Vol 14 (4) ◽  
pp. 7446-7468
Author(s):  
Manish Sharma ◽  
Beena D. Baloni
Keyword(s):  
High Pressure ◽  
Pressure Loss ◽  
Flow Analysis ◽  
Outer Wall ◽  
Optimization Techniques ◽  
Optimum Pressure ◽  
Research Areas ◽  
Static Pressure Distribution ◽  
High Pressure Compressor ◽  
Pressure Compressor

In a turbofan engine, the air is brought from the low to the high-pressure compressor through an intermediate compressor duct. Weight and design space limitations impel to its design as an S-shaped. Despite it, the intermediate duct has to guide the flow carefully to the high-pressure compressor without disturbances and flow separations hence, flow analysis within the duct has been attractive to the researchers ever since its inception. Consequently, a number of researchers and experimentalists from the aerospace industry could not keep themselves away from this research. Further demand for increasing by-pass ratio will change the shape and weight of the duct that uplift encourages them to continue research in this field. Innumerable studies related to S-shaped duct have proven that its performance depends on many factors like curvature, upstream compressor’s vortices, swirl, insertion of struts, geometrical aspects, Mach number and many more. The application of flow control devices, wall shape optimization techniques, and integrated concepts lead a better system performance and shorten the duct length.  This review paper is an endeavor to encapsulate all the above aspects and finally, it can be concluded that the intermediate duct is a key component to keep the overall weight and specific fuel consumption low. The shape and curvature of the duct significantly affect the pressure distortion. The wall static pressure distribution along the inner wall significantly higher than that of the outer wall. Duct pressure loss enhances with the aggressive design of duct, incursion of struts, thick inlet boundary layer and higher swirl at the inlet. Thus, one should focus on research areas for better aerodynamic effects of the above parameters which give duct design with optimum pressure loss and non-uniformity within the duct.

Application of Computational Mechanics to Tire Design—Yesterday, Today, and Tomorrow

2011 ◽  
Vol 39 (4) ◽  
pp. 223-244 ◽  
Author(s):  
Y. Nakajima
Keyword(s):  
Finite Element ◽  
New Technologies ◽  
Computational Mechanics ◽  
Design Procedure ◽  
Side Wall ◽  
Rolling Resistance ◽  
Optimization Techniques ◽  
Stress Strain ◽  
Element Analysis ◽  
Crown Shape

Abstract The tire technology related with the computational mechanics is reviewed from the standpoint of yesterday, today, and tomorrow. Yesterday: A finite element method was developed in the 1950s as a tool of computational mechanics. In the tire manufacturers, finite element analysis (FEA) was started applying to a tire analysis in the beginning of 1970s and this was much earlier than the vehicle industry, electric industry, and others. The main reason was that construction and configurations of a tire were so complicated that analytical approach could not solve many problems related with tire mechanics. Since commercial software was not so popular in 1970s, in-house axisymmetric codes were developed for three kinds of application such as stress/strain, heat conduction, and modal analysis. Since FEA could make the stress/strain visible in a tire, the application area was mainly tire durability. Today: combining FEA with optimization techniques, the tire design procedure is drastically changed in side wall shape, tire crown shape, pitch variation, tire pattern, etc. So the computational mechanics becomes an indispensable tool for tire industry. Furthermore, an insight to improve tire performance is obtained from the optimized solution and the new technologies were created from the insight. Then, FEA is applied to various areas such as hydroplaning and snow traction based on the formulation of fluid–tire interaction. Since the computational mechanics enables us to see what we could not see, new tire patterns were developed by seeing the streamline in tire contact area and shear stress in snow in traction.Tomorrow: The computational mechanics will be applied in multidisciplinary areas and nano-scale areas to create new technologies. The environmental subjects will be more important such as rolling resistance, noise and wear.

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