Ultrasound Medical Imaging Techniques

2021 ◽  
Vol 54 (3) ◽  
pp. 1-38
Author(s):  
Danilo Avola ◽  
Luigi Cinque ◽  
Alessio Fagioli ◽  
Gianluca Foresti ◽  
Alessio Mecca
Keyword(s):  
Medical Imaging ◽  
Real Time ◽  
Imaging Techniques ◽  
The Us ◽  
High Level ◽  
Surgical Operations ◽  
Selection Of ◽  
Us Technology

Ultrasound (US) imaging for medical purposes has been increasing in popularity over the years. The US technology has some valuable strengths, such as it is harmless, very cheap, and can provide real-time feedback. At the same time, it has also some drawbacks that the research in this field is trying to mitigate, such as the high level of noise and the low quality of the images. This survey aims at presenting the advances in the techniques used for US medical imaging. It describes the studies on the different organs that the US uses the most and tries to categorize the research in this field into three groups, i.e., segmentation, classification, and miscellaneous. This latter group includes the works that either provide aid during surgical operations or try to enhance the quality of the acquired US images/volumes. To the best of our knowledge, this is the first review that analyzes the different techniques exploited on a large selection of body locations (i.e., brain, thyroid, heart, breast, fetal, and prostate) in the three sub-fields of research.

scholarly journals Robotic Ultrasound Scanning With Real-Time Image-Based Force Adjustment: Quick Response for Enabling Physical Distancing During the COVID-19 Pandemic

2021 ◽  
Vol 8 ◽  
Author(s):  
Mojtaba Akbari ◽  
Jay Carriere ◽  
Tyler Meyer ◽  
Ron Sloboda ◽  
Siraj Husain ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Real Time ◽  
Close Contact ◽  
Image Features ◽  
Svm Classifier ◽  
Quick Response ◽  
Robot Arm ◽  
Noise Characteristics ◽  
The Us

During an ultrasound (US) scan, the sonographer is in close contact with the patient, which puts them at risk of COVID-19 transmission. In this paper, we propose a robot-assisted system that automatically scans tissue, increasing sonographer/patient distance and decreasing contact duration between them. This method is developed as a quick response to the COVID-19 pandemic. It considers the preferences of the sonographers in terms of how US scanning is done and can be trained quickly for different applications. Our proposed system automatically scans the tissue using a dexterous robot arm that holds US probe. The system assesses the quality of the acquired US images in real-time. This US image feedback will be used to automatically adjust the US probe contact force based on the quality of the image frame. The quality assessment algorithm is based on three US image features: correlation, compression and noise characteristics. These US image features are input to the SVM classifier, and the robot arm will adjust the US scanning force based on the SVM output. The proposed system enables the sonographer to maintain a distance from the patient because the sonographer does not have to be holding the probe and pressing against the patient's body for any prolonged time. The SVM was trained using bovine and porcine biological tissue, the system was then tested experimentally on plastisol phantom tissue. The result of the experiments shows us that our proposed quality assessment algorithm successfully maintains US image quality and is fast enough for use in a robotic control loop.

scholarly journals FEATURES OF ADVENTURE TOURISM AND PROSPECTS FOR ITS DEVELOPMENT IN RUSSIA

2017 ◽  
Vol 11 (3) ◽  
pp. 51-58
Author(s):  
Татьяна Никонова ◽  
Tatyana Nikonova ◽  
Валерия ГУСАРОВА ◽  
Valeriya GUSAROVA ◽  
Ольга Пережогина ◽  
...  
Keyword(s):  
Healthy Lifestyle ◽  
Transport Infrastructure ◽  
Extreme Sports ◽  
Professional Background ◽  
Adventure Tourism ◽  
Tourist Infrastructure ◽  
High Level ◽  
Negative Factors ◽  
Selection Of

In the last few years, the development of adventure tourism as a kind of active tourism initiatives, tourism firms have become more visible. Adventuretourism (adventure tourism) is different in originality and unusual variety of tours. It includes exotic travel, extreme sports, a specific move connected with risk and danger to life. In this regard, the article highlights the criterion of the differences of adventure tourism from other types of active travel. The authors point out the the main reasons for the popularity of adventure tourism of the article, among which are following: healthy lifestyle popularization, prestige of the activity of the pleasure, the desire of the modern tourist for new experiences and the rush of emotion, the possibility of self-realization, improving credibility and promotion in society through adventure tourism, including with help of social networks. Taking into account the growing popularity of adventure tourism in the world, the authors of the article analyzes the factors of Russia’s competitiveness for the adventure tourism development. It is revealed that strengths are rail transport infrastructure and a high level of health and hygiene. The article admits that now the development of adventure tourism in Russia is constrained by a number of negative factors to be overcome. Among them are the lack of a comprehensive look at the geography of Russia from the standpoint of the selection of adventure territories, the unsatisfactory level of tourist infrastructure of adventure, poor range and low quality of ser- vices adventure tourism, weak professional background of the staff.

scholarly journals COMPARISON OF CAREGIVERS FROM DIVERSE COMMUNITIES WHO IMMIGRATED TO OR WERE BORN IN THE US

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S955-S955
Author(s):  
Lauren Stratton ◽  
David Bass ◽  
Rachel Schaffer ◽  
Sara Powers ◽  
Ocean Le ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Comparative Analysis ◽  
Service Providers ◽  
The Us ◽  
Diverse Communities ◽  
Health Related ◽  
Similarities And Differences ◽  
Racial Ethnic ◽  
Selection Of

Abstract The Diverse Elders Coalition, in partnership with its six member organizations and the Benjamin Rose Institute on Aging, completed a national survey of 840 family and friend caregivers from diverse racial, ethnic, and sexual orientation communities to understand their unique caregiving issues and challenges. Data from a subsample of 369 caregivers identifying as Hispanic/Latino, Asian, Southeast Asian or multiple ethnicities were analyzed to understand similarities and differences between caregivers born in the US and who immigrated to the US. The Stress Process Conceptual Model guided selection of characteristics used for comparative analysis. Results of logistic regression revealed that caregivers born in the US were younger (B=-.08, p<.001), had higher educational degrees (B=.42, p<.001), and higher incomes (B=.34, p=.002). They assisted care receivers with more health-related tasks (B=.27, p=.013), but fewer culture-related tasks (B=-.51, p=.002); reported higher levels of strain in their relationship with care receivers (B=.66, p=.038); and were less satisfied with the quality of care receivers’ healthcare (B=-.62, p=.042). In terms of reasons for being a caregiver, there were no significant differences in cultural commitment to caring for older family members, however those born in the US were more likely to report providing care because it was more convenient for them than for other family and friends (B=.99, p=.002). Understanding the needs of diverse caregivers has implications for healthcare and service providers, such as providing training on diverse needs. Additionally, the differences between US born and immigrant caregivers highlights implications on the dynamic between caregivers and their care receiver.

scholarly journals In Situ and Real Time Investigation of Directional Solidification of Al - Ni Alloys by Synchrotron Imaging

2006 ◽  
Vol 508 ◽  
pp. 75-80 ◽  
Author(s):  
Guillaume Reinhart ◽  
Henri Nguyen-Thi ◽  
J. Gastaldi ◽  
Bernard Billia ◽  
Nathalie Mangelinck-Noël ◽  
...  
Keyword(s):  
Real Time ◽  
Imaging Techniques ◽  
Ni Alloys ◽  
X Ray Imaging ◽  
Major Interest ◽  
Synchrotron Imaging ◽  
Time Observation ◽  
Real Time Observation ◽  
Selection Of

Solidification is a dynamic phenomena and, as a consequence, it is of major interest to be able to investigate this process by in situ and real time observation. With synchrotron sources, this can be achieved by applying X-ray Imaging techniques (Radiography and Topography). Hence it is possible to follow the dynamical selection of solidification pattern on metallic alloys and to observe strain effects during growth process. In this paper, we present results obtained by using separately the two imaging techniques for the study of the microstructure formation during Al – Ni alloys solidification.

scholarly journals EVALUATION OF QOS PARAMETERS FOR IPTV UNINTERRUPTED OPERATION

T-Comm ◽  
2020 ◽  
Vol 14 (10) ◽  
pp. 33-38
Author(s):  
Alexander S. Antonenko ◽  
◽  
Andrey N. Zemtsov ◽  
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Streaming Data ◽  
Practical Applications ◽  
Network Bandwidth ◽  
Qos Parameters ◽  
Network Quality ◽  
High Level ◽  
Quality Of Service Parameters

This article describes the IPTV system, as well as its implementation methods and related protocols. The concept of IPTV includes both real-time television and recording television, the so-called VoD. In real time, streaming data is sent using only the RTP protocol and in addition to it, the RTSP protocol is used for streaming VoD. In addition, methods for measuring QoS parameters are analyzed, considering practical applications for estimating IPTV traffic parameters. An important feature of providing quality IPTV services is a high level of quality of service. Also, in theory, an Internet connection model with insufficient network bandwidth is considered. The following characteristics are taken into account: bandwidth, one-way delay, inter-packet jitter, the number of lost packets, the number of duplicated packets, packets with errors, and damaged packets. A reordering issue is mentioned. In addition, two important QoS parameters for VoD are measured: START delay and PAUSE / RESUME delays. Service messaging is considered while providing IPTV service. The maximum, average, and minimum values for the network quality of service parameters are found.

Model-Driven Engineering, Services and Interactive Real-Time Applications

2014 ◽  
pp. 178-202
Author(s):  
Luis Costa ◽  
Neil Loughran ◽  
Roy Grønmo
Keyword(s):  
Software Engineering ◽  
Language Development ◽  
Real Time ◽  
Software Systems ◽  
Model Driven Engineering ◽  
Model Driven ◽  
Future Developments ◽  
Real Time Applications ◽  
High Level

Model-driven software engineering (MDE) has the basic assumption that the development of software systems from high-level abstractions along with the generation of low-level implementation code can improve the quality of the systems and at the same time reduce costs and improve time to market. This chapter provides an overview of MDE, state of the art approaches, standards, resources, and tools that support different aspects of model-driven software engineering: language development, modeling services, and real-time applications. The chapter concludes with a reflection over the main challenges faced by projects using the current MDE technologies, pointing out some promising directions for future developments.

Procedure for Admittance of the Contractor Companies to Perform the Work at the Construction Site

2021 ◽  
pp. 24-28
Author(s):  
E.V. Glebova ◽  
◽  
E.A. Fomin ◽  
M.V. Ivanova ◽  
◽  
...  
Keyword(s):  
Injury Rate ◽  
Construction Site ◽  
Matrix Elements ◽  
Current Period ◽  
The Matrix ◽  
Industrial Injuries ◽  
High Level ◽  
The Given ◽  
Selection Of

The article is devoted to the assessment of the contractor companies activity in the field of safety both before the start of work execution and during the execution of work at the construction site of the Client’s company. Analysis is given concerning the industrial injuries from 2009 to 2018 in Russia, based on which the tendency to reduce industrial injuries for the current period is determined, and the coefficients of the frequency of injuries in various countries for 2015 are calculated. Based on the performed analysis, the injury rate in Russia is still at a high level. Economic component for the materials, personnel qualifications, and savings on safety from the Client’s company can also lead to injuries at the construction site. The main reasons for low quality of the work performed at the construction site, which in turn lead to injuries, are given in the article. Matrix for the assessment of the contractor companies was developed, with the help of which it is proposed to assess all the aspects of their activities that effect on safety of the work performed. Among the assessed aspects there are sections related to training, behavior and motivation of the personnel, audits conducted by the contractor companies in relation to the subcontractors, investigation of incidents by using the current procedures and contractor personnel responsibilities. One of the matrix elements is presented for assessment. Each element from the given section is proposed to be assessed on a scale from 0 to 3, where each aspect is presented in the form of an action, an assessment of this action and its result. Recommendations on the use of this methodology in the selection of contractors are provided.

scholarly journals Intraoperative Real-Time Visualization of the Lymphatic Vessels Using Microscope-Integrated Laser Tomography

2020 ◽  
Author(s):  
Akitatsu Hayashi ◽  
Hidehiko Yoshimatsu ◽  
Giuseppe Visconti ◽  
Sasithorn Sujarittanakarn ◽  
Guido Giacalone ◽  
...  
Keyword(s):  
Real Time ◽  
Vessel Wall ◽  
Lymphatic Vessel ◽  
Lymphatic Vessels ◽  
Tomography Imaging ◽  
Laser Tomography ◽  
Real Time Visualization ◽  
Time Required ◽  
Selection Of

Abstract Background Detection and selection of the lymphatic vessels are important for maximizing therapeutic efficacy of lymphaticovenular anastomosis (LVA). Some imaging modalities have been reported to be useful for intraoperative identification of the lymphatic vessels, but they have limitations. In this article, we present new capabilities of intraoperative laser tomography, which was used to evaluate the lumen of the lymphatic vessel and to validate the patency of anastomosis. Patients and Methods Fifty-two patients with upper extremity lymphedema secondary to breast cancer treatment underwent indocyanine green (ICG) lymphography and real-time laser tomography imaging of ICG-enhanced lymphatic vessels intraoperatively before transecting the vessels during LVA. The imaging findings of the lymphatic vessels in laser tomography were investigated. Time required for scanning of the lymphatic vessels was compared between laser tomography and ultrasonography. The correlation between the thickness of the lymphatic vessel wall measured with laser tomographic imaging and the histologically measured thickness of the lymphatic vessel wall was examined. The patency of anastomosis sites was determined based on the image using laser tomography immediately after establishment of LVA. Results A total of 132 ICG-enhanced lymphatic vessels were scanned with laser tomography showing clear lumen with surrounding vessel wall. The required time for lymphatic vessel scanning was significantly shorter with laser tomography than with ultrasonography (1.6 ± 0.3 vs. 4.8 ± 1.2 minutes; p = 0.016). Strong correlation was seen between the thickness of the lymphatic vessels wall measured using laser tomography and the histologically measured thickness of the lymphatic vessel wall (r = 0.977, 95% confidence interval: 0.897–0.992, p < 0.001). The quality of patency was evaluated immediately after anastomosis, which assisted in deciding whether reanastomosis was needed. Conclusion Microscope-integrated laser tomography provides real-time images of the lymphatic vessels in extremely high resolution and enables evaluation of lymphatic lumen condition and objective post-LVA anastomosis status.

scholarly journals Basketball Technology Simulation Application Based on Virtual Reality

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yushuai Song
Keyword(s):  
Virtual Reality ◽  
Great Influence ◽  
Physical And Mental Health ◽  
Basketball Players ◽  
Warm Up ◽  
Hit Rate ◽  
The Individual ◽  
High Level ◽  
Selection Of

The combination of virtual reality (VR) technology and basketball technology simulation can make the players have a real experience and experience, so as to effectively improve the quality of basketball training. It can also, according to the individual needs of different players, promote their physical and mental health development and improve the enthusiasm of basketball training, so as to improve the level of basketball technology. Immersive feeling and interest of human-computer interaction are the essential characteristics of virtual reality. The real conception of space-time environment, that is, the process of enlightening thinking and obtaining basketball technology simulation information, is the ultimate goal of virtual reality. In this experiment, five high-level basketball players in our city were selected and numbered from no. 1 to no. 5. Before the experiment, it is necessary to make the players warm up fully before the experiment and then test the forward turning technical movements of basketball. The test variables are based on different angles and distances. After that, standardized selection of basketball technical statistical indicators includes shooting hit rate, two-point hit rate, three-point hit rate, and free throw hit rate. According to the results of the experiment, it took the most time for the curve technique to lower the buffer stage, and it took up 29% of the total time of the entire precursor shot and turned back and the aerial shot stage is 23% and 22%, respectively. There is 20% time in the takeoff phase and 6% time in the brake phase. It has a great influence on the results of the game.

scholarly journals THE USE OF TEACHING AIDS AND THEIR IMPORTANCE FOR STUDENTS’ MUSIC EDUCATION

2015 ◽  
Vol 3 (2) ◽  
pp. 33-40
Author(s):  
Miomira M. Đurđanović
Keyword(s):  
Music Education ◽  
Teaching Practice ◽  
Total Sample ◽  
School Class ◽  
Musical Education ◽  
Teaching Aids ◽  
Quality Of Teaching ◽  
High Level ◽  
Selection Of

In an effort to ensure a high level of implementation and increase the efficiency of the use of teaching aids in music education, a research was conducted in the academic 2014/2015 with an aim to test whether the educational level of teachers, the number of years of their experience at work, and the particular school in which the teachers are employed influence their selection of teaching aids used in the course in music education. The aim of the study was to determine whether the selection and use of teaching aids influences the quality of teaching the course in music education. The attitudes of participants were studied by means of a questionnaire specifically designed for the present research. The total sample comprised 113 primary school class teachers. The study so conducted has determined the current situation in the teaching practice, any significant differences emerging from the connection between the use of teaching aids in the course in music education and a number of general variables, including any prior elementary musical education of the teachers themselves. 

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