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- Asplund, Sara, 1976, et al.
(författare)
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Extended analysis of the effect of learning with feedback on the detectability of pulmonary nodules in chest tomosynthesis
- 2011
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Ingår i: Progress in Biomedical Optics and Imaging - Proceedings of SPIE. - : SPIE. - 1605-7422. ; 7966
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In chest tomosynthesis, low-dose projections collected over a limited angular range are used for reconstruction of section images of the chest, resulting in a reduction of disturbing anatomy at a moderate increase in radiation dose compared to chest radiography. In a previous study, we investigated the effects of learning with feedback on the detection of pulmonary nodules in chest tomosynthesis. Six observers with varying degrees of experience of chest tomosynthesis analyzed tomosynthesis cases for presence of pulmonary nodules. The cases were analyzed before and after learning with feedback. Multidetector computed tomography (MDCT) was used as reference. The differences in performance between the two readings were calculated using the jackknife alternative free-response receiver operating characteristics (JAFROC-2) as primary measure of detectability. Significant differences between the readings were found only for observers inexperienced in chest tomosynthesis. The purpose of the present study was to extend the statistical analysis of the results of the previous study, including JAFROC-1 analysis and FROC curves in the analysis. The results are consistent with the results of the previous study and, furthermore, JAFROC-1 gave lower p-values than JAFROC-2 for the observers who improved their performance after learning with feedback. © 2011 SPIE.
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| 2. |
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| 3. |
- Asplund, Sara, 1976, et al.
(författare)
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Learning aspects and potential pitfalls regarding detection of pulmonary nodules in chest tomosynthesis and proposed related quality criteria.
- 2011
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Ingår i: Acta radiologica. - : SAGE Publications. - 1600-0455 .- 0284-1851. ; 52:5, s. 503-512
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Tidskriftsartikel (refereegranskat)abstract
- Background In chest tomosynthesis, low-dose projections collected over a limited angular range are used for reconstruction of an arbitrary number of section images of the chest, resulting in a moderately increased radiation dose compared to chest radiography. Purpose To investigate the effects of learning with feedback on the detection of pulmonary nodules for observers with varying experience of chest tomosynthesis, to identify pitfalls regarding detection of pulmonary nodules, and present suggestions for how to avoid them, and to adapt the European quality criteria for chest radiography and computed tomography (CT) to chest tomosynthesis. Material and Methods Six observers analyzed tomosynthesis cases for presence of nodules in a jackknife alternative free-response receiver-operating characteristics (JAFROC) study. CT was used as reference. The same tomosynthesis cases were analyzed before and after learning with feedback, which included a collective learning session. The difference in performance between the two readings was calculated using the JAFROC figure of merit as principal measure of detectability. Results Significant improvement in performance after learning with feedback was found only for observers inexperienced in tomosynthesis. At the collective learning session, localization of pleural and subpleural nodules or structures was identified as the main difficulty in analyzing tomosynthesis images. Conclusion The results indicate that inexperienced observers can reach a high level of performance regarding nodule detection in tomosynthesis after learning with feedback and that the main problem with chest tomosynthesis is related to the limited depth resolution.
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| 5. |
- Gosman-Hedström, Gunilla, 1947, et al.
(författare)
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Strokerummet - en webbplats för lärande : Thematic stroke room - a website for learning
- 2010
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Ingår i: Vård i Norden. - : SAGE Publications. - 0107-4083. ; 30:2, s. 42-45
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Tidskriftsartikel (refereegranskat)abstract
- The widespread use of web-based resources has dramatically increased access to scientifically based information of use to both health professionals and the general public. Scientific results are, however, often hard for people outside the scientific community to understand. Moreover, access to large amounts of information of various kinds often places insurmountable demands on the readers to understand, assess and select what is relevant and trustworthy. This article describes the development of «Thematic Room Stroke- care, social care and rehabilitation» at Vårdalinstitutet, the Swedish Institute for Health Sciences. This is a Swedish project resulting from close cooperation between an editing committee and about 30 researchers. It aims to present research findings on a website that healthcare teams, patients and their families and the public can easily access and use. A syllabus and texts connected with each theme may be downloaded for use in local study circles. The idea is to stimulate the participants’ interest in learning independently and create a forum for dialogue and discussion in different contexts. Professionals use the website material regularly for classes and informing patients. It is hoped that an interactive forum to determine how the information is understood and used will provide important feedback on how the virtual Thematic Room Stroke may be further improved
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| 6. |
- Winman, Thomas, 1967-, et al.
(författare)
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Local knowing and the use of electronic patientrecords : categories and continuity of health care
- 2012
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Ingår i: Health and Technology. - : Springer Science and Business Media LLC. - 2190-7188 .- 2190-7196. ; 2:3, s. 185-196
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Tidskriftsartikel (refereegranskat)abstract
- The electronic patient record (EPR) is a constitutive element of medical practice and can be conceived of as a multi-purpose tool that is intended to support a range of activities such as planning, decision-making and evaluation. Each of these activities is quite complex in its own right. The aim of the present study is to explore how the standardized format of EPRs intervenes in the work of sustaining continuity in patients ' care. In doing this we analyse ow this standardized format contributes to structure the production and use of information concerning patients' mundane problems in the context of rehabilitation. Data consists of observations, informal interviews and video-recordings from a ward for patients affected by stroke. The results show that there is a tension between the highly uniform structures and standards for documentation in EPRs, on the one hand, and, on the other, how information is designed and put into use by care providers. When staff members use EPRs, they constantly have to contextualize what is written in relation to what they know about patients and/or the current situation. On the local level, the increasing standardization that follows the introduction of EPRs will make it even more necessary for professionals to engage in such interpretative work to close the gap between the standardized categories of the EPR and contextually relevant health care interventions. In spite of requests for increasing standardization there will always be a need to adapt to specific needs for more flexible information structures. Otherwise, there may be the risk that non-standard features the initial standardization was intended to reduce may be re-introduced.
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| 7. |
- Elf, Mikael, 1959, et al.
(författare)
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An investigation of intended and real use of a research web health portal and its implementation
- 2014
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Ingår i: Electronic Journal of Health Informatics. - Melbourne, Victoria : Health Informatics Society of Australia (H I S A) Ltd.. - 1446-4381. ; 8:1
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Tidskriftsartikel (refereegranskat)abstract
- Participatory design (PD) projects involve prospective users as co-designers in a process where the design object emerges through several iterations. However, the result of such a process can only partly anticipate how the future real users will use the designed object. For this reason, its actual use needs to be investigated. The present study investigated the relationship between intended use and real use in two web-based health support systems in order to explore the conditions for redesign. The dependency between intended use and real use was found to be weak. Rather, the real use was dependent on 1) the context of use and 2) the needs or interest of the users. We conclude that redesign should be based on continuous use of web metrics collected in natural settings and by involving users on a recurring basis. While a web health portal must have an agenda it is important to adapt thing design to use design, why redesign in essence will become an adaptation to user needs.©Copyright of articles originally published in www.eJHI.net under the Creative Commons Attribution 3.0 License is retained by the authors.
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| 8. |
- Moller, H., et al.
(författare)
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Technology-Enhanced Learning of Human Trauma Biomechanics in an Interprofessional Student Context
- 2022
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Ingår i: Teaching and Learning in Medicine. - : Informa UK Limited. - 1040-1334 .- 1532-8015. ; 34:2, s. 135-144
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Tidskriftsartikel (refereegranskat)abstract
- Phenomenon This study aimed to investigate how students can develop their understanding of trauma biomechanics by means of technology-enhanced learning-an interactive visualization tool developed to enhance understanding of the biomechanics underlying an injury via dynamic imaging sequences. Approach: Students were invited to explore the content as a learning resource during an interprofessional clinical placement on an orthopedic ward. Thirty volunteer medical, nursing, and physiotherapy/occupational therapy students participated in 10 interprofessional groups of three participants. They were video recorded while interacting with learning software that was divided into five sections: Work Up, General Information, Biomechanical Case Study, Biomechanical Risk Assessment, and Treatment. Investigators probed students' learning experiences via four focus group discussions. A sociomaterial perspective was adopted, directing the analytical focus to how students' made use of talk, gestures, bodies, and material objects to understand the visualized phenomena. Findings: When connecting the visualization to a patient case, certain features of the technology stood out as important for promoting engagement and understanding trauma mechanisms. Decreased tempo, showing the directions and dynamics of trauma biomechanics in slow-motion, and color coding of the strain on the affected structures were especially important for evoking the emotional responses. The visualization tool also supported students' explorations of causal relationships between external forces and their biomedical effects. These features emphasize the sociomaterial relation between the design of the technology and the student activities. Insights: Dynamic visualization of biomechanical events has the potential to improve the understanding of injury mechanisms and specifically to identify anatomical structures at high risk of injury. Dynamic visualizations for educational purposes seem to promote possibilities for learners to contextualize visual representations relative to one's own body. Educational methods and practice need explicit attention and development in order to use the full potential of the visualization technology for learning for the health care professions.
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| 10. |
- Elf, Mikael, 1959, et al.
(författare)
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Young carers as co-designers of a web-based support system - the views of two publics
- 2012
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Ingår i: Informatics for Health and Social Care. - : Informa UK Limited. - 1753-8157 .- 1753-8165. ; 37:4, s. 203-216
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Tidskriftsartikel (refereegranskat)abstract
- Aim: The aim of the study was to reveal young carers’ views of design of a web-based support system (WBSS) directed to them and the differences between their views and the views of project representatives (PRs), in a participatory design process. Methods: Eight young people, 17–24 years, were involved in either a work or a test group. The work group participated in video-recorded design meetings with representatives of the project. Content analysis and Dewey’s concept of public were applied on the data. The test group worked from their homes and data were collected via test forms and used as supplemental data. Results: Four themes were revealed, constituting key parts in the design of the WBSS: Communicating the message, Ideational working principles, User interaction and User interface. Furthermore, decisive differences between the views of participants and PRs were found. Conclusion: The four key parts should be considered in a WBSS directed to young carers. The study also suggests that early user involvement and critical reflection in the design process itself may be crucial to discern differences in perspective between designers and users.
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