scholarly journals Patch Based Grid Artifact Suppressing in Digital Mammography

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Qingqing Ling ◽  
Shuyu Wu ◽  
Xiaoman Duan ◽  
Genggeng Qin ◽  
Jianhui Ma ◽  
...  
Keyword(s):  
Digital Mammography ◽  
Screening Method ◽  
Computation Time ◽  
Grid Pattern ◽  
Characteristic Peak ◽  
Qualitative And Quantitative ◽  
Quantitative Studies ◽  
First Choice ◽  
Antiscatter Grid

The mammography is the first choice of breast cancer screening, which has proven to be the most effective screening method. An antiscatter grid is usually employed to enhance the contrast of image by absorbing unexpected scattered signals. However, the grid pattern casts shadows and grid artifacts, which severely degrade the image quality. To solve the problem, we propose the patch based frequency signal filtering for fast grid artifacts suppressing. As opposed to whole image processing synchronously, the proposed method divides image into a number of blocks for tuning filter simultaneously, which reduces the frequency interference among image blocks and saves computation time by multithread processing. Moreover, for mitigating grid artifacts more precisely, characteristic peak detection is employed in each block automatically, which can accurately identify the location of the antiscatter grid and its motion pattern. Qualitative and quantitative studies were performed on simulation and real machine data to validate the proposed method. The results show great potential for fast suppressing grid artifacts and generating high quality of digital mammography.

Teaching end-of-life communication: priorities, challenges, scope—systematic review

2021 ◽  
pp. bmjspcare-2020-002725
Author(s):  
Jack K H Pun ◽  
Ka Man Cheung ◽  
Chung Hang James Chow
Keyword(s):  
End Of Life ◽  
Scoping Review ◽  
Search Strategy ◽  
Medical Providers ◽  
Comprehensive Overview ◽  
Qualitative And Quantitative ◽  
Quantitative Studies ◽  
End Of Life Communication ◽  
Future Practice

BackgroundWithout a well-rounded syllabus to teach end-of-life (EOL) communication, medical providers find it challenging to enhance their patients’ quality of life at the final stage of life.AimThe aim of this scoping review was to explore studies about the teaching of EOL communication and to detail how educators can approach the teaching of EOL communication.MethodsA scoping review of both qualitative and quantitative studies was conducted according to the methodological framework of scoping review. The PsycINFO, PubMed, ERIC, CINAHL and EMBASE databases were searched for studies using the keywords ‘teach’, ‘educat*’, ‘end of life’, ‘terminal care’, ‘communication’ and ‘palliative care’. Sixteen studies were appraised, and none was rejected on the grounds of quality.ResultsThe search strategy yielded 22 278 entries and 16 studies were included. Two themes were identified from the priorities in teaching EOL communication: (1) challenges to teaching EOL communication and (2) methods of teaching EOL communication. To present a comprehensive overview of EOL communication teaching, we provide directions for priorities of topics and approaches when teaching EOL communication.ConclusionsThe review detailed the complexity of teaching EOL communication, which indicates the need for a well-rounded syllabus that includes skills such as non-verbal social cues, communication strategies and understanding EOL communication in various cultural contexts to facilitate a well-rounded EOL communication experience for students’ future practice.

scholarly journals Determinants of Self-Stigma in People with Parkinson’s Disease: A Mixed Methods Scoping Review

2021 ◽  
pp. 1-14
Author(s):  
Anne-Marie Hanff ◽  
Anja K. Leist ◽  
Joëlle V. Fritz ◽  
Claire Pauly ◽  
Rejko Krüger ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Mixed Methods ◽  
Study Design ◽  
Scoping Review ◽  
Public Awareness ◽  
Qualitative And Quantitative ◽  
Quantitative Studies

Background: Self-stigma in people with Parkinson’s disease (PD) can substantially impact quality of life and possibilities for social participation. An integrative analysis of determinants of self-stigma has been lacking. Objective: We sought to explore which complementary insights from qualitative and quantitative studies, as well as from expert consultation, could be gained. Methods: An established mixed methods study design was employed to first conduct a mixed methods scoping review of published qualitative and quantitative literature, and then consult with experts to arrive at an exhaustive list of determinants of self-stigma after a thematic synthesis. Results: A total of 87 unique determinants of self-stigma were identified. Quantitative studies and expert consultations mainly identified personal determinants of people with self-stigma (e.g., age, anxiety, or apathy). In contrast, qualitative studies identified social situations associated with self-stigma (e.g., joint meals of people with typical PD with others). Notably, self-stigma of people with PD was found to be particularly salient in unfamiliar places, at the working place or in contact with people without PD. Across methods, cognitive impairment, tremor, and abnormal walk and unsteady gait, respectively, were associated with self-stigma. Conclusion: The mixed method study design yielded complementary insights, but also factors commonly associated with self-stigma across methods. Future prioritization exercises may gain further insights into self-stigma of people with PD. Facilitating social encounters by both addressing needs of affected people and raising knowledge and public awareness may improve quality of life in people with PD.

Comparative Pharmacognostic, Physicochemical and Phytochemical Studies of Different Samples of Plumbago zeylanica L. Roots

2017 ◽  
Vol 9 (06) ◽  
Author(s):  
Neha Jain ◽  
Mohan Lal Kori
Keyword(s):  
Phytochemical Analysis ◽  
Local Market ◽  
Herbal Drugs ◽  
Disease Treatment ◽  
Organoleptic Evaluation ◽  
Plumbago Zeylanica ◽  
Qualitative And Quantitative ◽  
Crude Drugs ◽  
Phytochemical Studies

The objective of the present study is to evaluate the quality of the marketed and self collected samples of Plumbago zeylanica L. roots on the standardization parameters. This study is planned mainly to confirm changes with quality of drug. Now a day’s more demand of herbal drugs for disease treatment, lack of knowledge of proper methodology and availability are promoting the practices of adulteration and substitution. Thus, the standardization of the plant crude drugs is necessary to maintain their therapeutic efficacy. Comparative studies were carried out to evaluate the standards of P. zeylanica L. with emphasis on organoleptic evaluation, physicochemical and phytochemical analysis. Samples were procured from local market and self collected to determine the qualitative and quantitative variations. The result indicates that self collected sample showed significant results with comparison to marketed sample.

Quantitative and Qualitative Characteristics of Urban Discharge to Small River Basins in the South West of Sweden

1983 ◽  
Vol 14 (3) ◽  
pp. 155-166 ◽  
Author(s):  
Wm. Hogland ◽  
R. Berndtsson
Keyword(s):  
River Basins ◽  
Small River ◽  
The South ◽  
Time Intervals ◽  
Qualitative And Quantitative ◽  
South West ◽  
Quantitative Characteristics ◽  
Qualitative Characteristics ◽  
Qualitative And Quantitative Characteristics

The paper deals with the qualitative and quantitative characteristics of urban discharge. Ratios for urban discharge and recipient flow during different time intervals are presented and discussed. The quality of the urban discharge is illustrated through pollutographs.

Prophylaxis in people with haemophilia

2009 ◽  
Vol 101 (04) ◽  
pp. 674-681 ◽  
Author(s):  
Massimo Franchini ◽  
Annarita Tagliaferri ◽  
Antonio Coppola
Keyword(s):  
Quality Of Life ◽  
Cost Benefit ◽  
Primary Prophylaxis ◽  
Secondary Prophylaxis ◽  
Severe Haemophilia ◽  
Duration Of Treatment ◽  
First Choice ◽  
Long Term Treatment

SummaryA four-decade clinical experience and recent evidence from randomised controlled studies definitively recognised primary prophylaxis, i.e. the regular infusion of factor concentrates started after the first haemarthrosis and/or before the age of two years, as the first-choice treatment in children with severe haemophilia. The available data clearly show that preventing bleeding since an early age enables to avoid or reduce the clinical impact of muscle-skeletal impairment from haemophilic arthropathy and the related consequences in psycho-social development and quality of life of these patients. In this respect, the aim of secondary prophylaxis, defined as regular long-term treatment started after the age of two years or after two or more joint bleeds, is to avoid (or delay) the progression of arthropathy. The clinical benefits of secondary prophylaxis have been less extensively studied, especially in adolescents and adults; also in the latter better outcomes and quality of life for earlier treatment have been reported. This review summarises evidence from literature and current clinical strategies for prophylactic treatment in patients with severe haemophilia, also focusing on challenges and open issues (optimal regimen and implementation, duration of treatment, long-term adherence and outcomes, cost-benefit ratios) in this setting.

scholarly journals Underwater Image Restoration via Non-Convex Non-Smooth Variation and Thermal Exchange Optimization

2021 ◽  
Vol 9 (6) ◽  
pp. 570
Author(s):  
Qingliang Jiao ◽  
Ming Liu ◽  
Pengyu Li ◽  
Liquan Dong ◽  
Mei Hui ◽  
...  
Keyword(s):  
Image Restoration ◽  
Qualitative And Quantitative Analysis ◽  
Formation Model ◽  
High Quality ◽  
Thermal Exchange ◽  
Qualitative And Quantitative ◽  
Smooth Variation ◽  
Underwater Image ◽  
Dark Channel

The quality of underwater images is an important problem for resource detection. However, the light scattering and plankton in water can impact the quality of underwater images. In this paper, a novel underwater image restoration based on non-convex, non-smooth variation and thermal exchange optimization is proposed. Firstly, the underwater dark channel prior is used to estimate the rough transmission map. Secondly, the rough transmission map is refined by the proposed adaptive non-convex non-smooth variation. Then, Thermal Exchange Optimization is applied to compensate for the red channel of underwater images. Finally, the restored image can be estimated via the image formation model. The results show that the proposed algorithm can output high-quality images, according to qualitative and quantitative analysis.

scholarly journals Disrupting Cultures of Harassment in Archaeology: Social-Environmental and Trauma-Informed Approaches to Disciplinary Transformation

2021 ◽  
pp. 1-18
Author(s):  
Barbara L. Voss
Keyword(s):  
Public Health ◽  
Disciplinary Culture ◽  
Environmental Model ◽  
Exclusionary Practices ◽  
Archaeological Practice ◽  
Qualitative And Quantitative ◽  
Quantitative Studies ◽  
The Social ◽  
Trauma Informed ◽  
Social Environmental

This article is the second in a two-part series that analyzes current research on harassment in archaeology. Both qualitative and quantitative studies, along with activist narratives and survivor testimonials, have established that harassment is occurring in archaeology at epidemic rates. These studies have also identified key patterns in harassment in archaeology that point to potential interventions that may prevent harassment, support survivors, and hold perpetrators accountable. This article reviews five key obstacles to change in the disciplinary culture of archaeology: normalization, exclusionary practices, fraternization, gatekeeping, and obstacles to reporting. Two public health paradigms—the social-environmental model and trauma-informed approaches—are used to identify interventions that can be taken at all levels of archaeological practice: individual, relational, organizational, community, and societal.

scholarly journals Multimodality Screening of High-Risk Women: A Prospective Cohort Study

2009 ◽  
Vol 27 (36) ◽  
pp. 6124-6128 ◽  
Author(s):  
Susan P. Weinstein ◽  
A. Russell Localio ◽  
Emily F. Conant ◽  
Mark Rosen ◽  
Kathleen M. Thomas ◽  
...  
Keyword(s):  
High Risk ◽  
Digital Mammography ◽  
Imaging Modality ◽  
Screening Method ◽  
High Risk Group ◽  
Breast Cancers ◽  
Screen Mammogram ◽  
Dense Breast Tissue ◽  
High Risk Women ◽  
Screening Population

Purpose Mammography has been established as the primary imaging screening method for breast cancer; however, the sensitivity of mammography is limited, especially in women with dense breast tissue. Given the limitations of mammography, interest has developed in alternative screening techniques. This interest has led to numerous studies reporting mammographically occult breast cancers detected on magnetic resonance imaging (MRI) or ultrasound. In addition, digital mammography was shown to be more sensitive than film mammography in selected populations. Our goal was to prospectively compare cancer detection of digital mammography (DM), whole-breast ultrasound (WBUS), and contrast-enhanced MRI in a high-risk screening population previously screened negative by film screen mammogram (FSM). Methods During a 2-year period, 609 asymptomatic high-risk women with nonactionable FSM examinations presented for a prospective multimodality screening consisting of DM, WBUS, and MRI. The FSM examinations were reinterpreted by study radiologists. Patients had benign or no suspicious findings on clinical examination. The cancer yield by modality was evaluated. Results Twenty cancers were diagnosed in 18 patients (nine ductal carcinomas in situ and 11 invasive breast cancers). The overall cancer yield on a per-patient basis was 3.0% (18 of 609 patients). The cancer yield by modality was 1.0% for FSM (six of 597 women), 1.2% for DM (seven of 569 women), 0.53% for WBUS (three of 567 women), and 2.1% for MRI (12 of 571 women). Of the 20 cancers detected, some were only detected on one imaging modality (FSM, n = 1; DM, n = 3; WBUS, n = 1; and MRI, n = 8). Conclusion The addition of MRI to mammography in the high-risk group has the greatest potential to detect additional mammographically occult cancers. The incremental cancer yield of WBUS and DM is much less.

Sign in / Sign up

Export Citation Format

Share Document