43 research outputs found
A Proactive Strategy for Safe Human-Robot Collaboration based on a Simplified Risk Analysis
Radiographers' involvement in research activities and opinions on radiography research: A Nordic survey
Introduction:Â Radiographers' engagement in research is important for the development of evidence-based practice in radiography; however, radiographers' interest in research has rarely been reported. This study sought to ascertain radiographers' opinions about radiography research and investigate their involvement in research activities in four Nordic countries.Methods:Â This study was conducted in Denmark, Finland, Norway and Sweden. A study-specific questionnaire was developed in English and adapted to each language of the study sample, and the content and face validity of the adaptations were evaluated. An online tool was used to collect the study data. The questionnaire link was distributed in September 2019 to radiographers working in clinical settings in four Nordic countries (n = 4572).Results:Â The overall response rate was 14% (n = 662/4572). Research involvement was reported by 33% of the respondents; data collection was the main type of contribution. Radiographers who contributed to research were more likely to be male, have longer work experience, hold a master's or doctoral degree, work as managers and be employed in university hospitals. Nearly all agreed that radiography research is needed to promote the radiography profession and provide the evidence base for radiographic practice. However, only 14% were aware of the current research evidence regarding their professional field of specialisation, and 19% indicated that they developed current practices based on research evidence.Conclusion:Â The findings indicate that, although radiographers had positive attitudes towards radiography research, their involvement in research and utilisation of research evidence in practice is low.</p
Radiation chemistry of solid-state carbohydrates using EMR
We review our research of the past decade towards identification of radiation-induced radicals in solid state sugars and sugar phosphates. Detailed models of the radical structures are obtained by combining EPR and ENDOR experiments with DFT calculations of g and proton HF tensors, with agreement in their anisotropy serving as most important criterion. Symmetry-related and Schonland ambiguities, which may hamper such identification, are reviewed. Thermally induced transformations of initial radiation damage into more stable radicals can also be monitored in the EPR (and ENDOR) experiments and in principle provide information on stable radical formation mechanisms. Thermal annealing experi-ments reveal, however, that radical recombination and/or diamagnetic radiation damage is also quite important. Analysis strategies are illustrated with research on sucrose. Results on dipotassium glucose-1-phosphate and trehalose dihydrate, fructose and sorbose are also briefly discussed. Our study demonstrates that radiation damage is strongly regio-selective and that certain general principles govern the stable radical formation
OPTIMAX 2017 : radiation dose, image quality optimisation,the use of new technology in medical imaging
This year OPTIMAX settled in Oslo. After the successof previous years, we are proud to present the fourthEbook. As in previous years, the group was madeup of PhD-, MSc- and BSc students as well astutors from the seven European partner universities.Professional mix was drawn from medical physics/physics and radiography. OPTIMAX 2017 was partlyfunded by the partner universities and partly by theparticipants. Two students from South Africa and twofrom Brazil were invited by Hanze UAS (Groningen)and ESTeSL (Lisbon) summer school includedlectures and group projects in which experimentalresearch was conducted in four teams. Four research projects were performed with a focuson radiation dose optimization and image quality,namely: Possible dose reduction for pediatric patientsfor conventional radiology; Can the tube voltage belowered with the use of direct-conversion flat paneldetector system?; Impact of body size and kV in chestradiography; Quantity assessment on Image quality ofCBCT images of head phantom with implants of metaland ceramic objects.The last day of OPTIMAX 2017there was a poster session and a conference, in whichthe research teams presented their posters and oralpresentations. This book comprises of two sections, the first twochapters concern generic background informationabout international teamwork during the OPTIMAXsummerschool. The next chapters with theory on which the researchprojects were built. The second section containsthe research papers of the four research projects.Two research papers, Can the tube voltage belowered with the use of direct-conversion flat-paneldetector system? And Impact of body size and kV inchest radiography: Experimental receiver operatingcharacteristic analysis using a Multipurpose ChestPhantom âLungmanâ have been accepted for the ECRconference, Vienna, 2018 as oral presentations
Guest Editorial: OPTIMAX 2013
In 2012 we were awarded an Erasmus Intensive Programme grant to facilitate OPTIMAX 2013, a three week duration residential summer school held within the UK during August 2013. The summer school helped to further develop student radiographer skills in optimising x-radiation dose and image quality. With a major emphasis on visual techniques to determine image quality, lesion visibility, lesion detection performance and physical measures of image quality (eg signal to noise ratio (SNR)) we conducted controlled laboratory experiments on phantoms using Computed Radiography, CT and Full Field Digital Mammography. Mathematical modelling was used for radiation dose estimation. Sixty seven people from 5 European countries participated. This included 49 PhD, MSc and BSc students. Discipline areas included radiography, physics, biomedical science and nuclear medicine
Aneurysmal dilatation of left atrial appendage diagnosed by cross sectional echocardiography and surgically removed.
Radiographers' involvement in research activities and opinions on radiography research : A Nordic survey
INTRODUCTION: Radiographers' engagement in research is important for the development of evidence-based practice in radiography; however, radiographers' interest in research has rarely been reported. This study sought to ascertain radiographers' opinions about radiography research and investigate their involvement in research activities in four Nordic countries.METHODS: This study was conducted in Denmark, Finland, Norway and Sweden. A study-specific questionnaire was developed in English and adapted to each language of the study sample, and the content and face validity of the adaptations were evaluated. An online tool was used to collect the study data. The questionnaire link was distributed in September 2019 to radiographers working in clinical settings in four Nordic countries (n = 4572).RESULTS: The overall response rate was 14% (n = 662/4572). Research involvement was reported by 33% of the respondents; data collection was the main type of contribution. Radiographers who contributed to research were more likely to be male, have longer work experience, hold a master's or doctoral degree, work as managers and be employed in university hospitals. Nearly all agreed that radiography research is needed to promote the radiography profession and provide the evidence base for radiographic practice. However, only 14% were aware of the current research evidence regarding their professional field of specialisation, and 19% indicated that they developed current practices based on research evidence.CONCLUSION: The findings indicate that, although radiographers had positive attitudes towards radiography research, their involvement in research and utilisation of research evidence in practice is low.IMPLICATIONS FOR PRACTICE: Strategies should be developed to improve knowledge and skills related to evidence-based practice and stimulate radiographers' engagement in research
Lesion detection performance in an anthropomorphic chest phantom: comparative analysis of low-dose CT data on two hybrid imaging systems
Introduction: multimodality environment; requirement for greater understanding of the imaging technologies used, the limitations of these technologies, and how to best interpret the results; dose optimization; introduction of new techniques; current practice and best practice; incidental findings, in low-dose CT images obtained as part of the hybrid imaging process, are an increasing phenomenon with advancing CT technology; resultant ethical and medico-legal dilemmas; understanding limitations of these procedures important when reporting images and recommending follow-up; free-response observer performance study was used to evaluate lesion detection in low-dose CT images obtained during attenuation correction acquisitions for myocardial perfusion imaging, on two hybrid imaging systems
Facilitators for and barriers to radiography research in public healthcare in Nordic countries
Introduction:It has been suggested that the future of diagnostic imaging relies on engagement inresearch and evidence-based practice. This implies a role transition from a clinical radiographer to aclinical radiographer-researcher. Clinical radiographersâstimuli for engaging in research in Nordiccountries are unknown. This study aimed to address this gap.Methods:Cross-sectional data collection via an online questionnaire on facilitators for and barriers toparticipation in radiography research was carried out among 507 clinical radiographers in publichealthcare in the Nordic countries: Denmark, Finland, Norway and Sweden.Results:Support from colleagues (odds ratio [OR] 2.62) and other professionals (OR 2.74), and self-esteem in research skills (OR2.21), were facilitators for radiography research. Lack of knowledgeand skills to conduct research (OR 2.48) was revealed to hinder radiographersâparticipation in research.The absence of a radiography research culture in the workplace explained non-participation in research(OR 1.75).Conclusion:This study revealed significant factors for clinical radiographersâparticipation in research.Implications for practice:A strategy for establishing a radiography research culture in healthcare isproposed that is novel for the context. Management support for knowledge development and activityleading to inter-professional research projects across knowledgefields, provision of a radiographyresearch lead and acknowledgement of radiography research among colleagues signify the establishmentof the culture. These prerequisites might provide a paradigm change towards not only the symbiosis of aclinical radiographer and an autonomous researcher but also a partner who adds radiography research toevidence-based practice in diagnostic imaging