| 1. |
- Ghauri, Muhammad Daniyal, et al.
(författare)
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Hybrid heterogeneous phantoms for biomedical applications: a demonstration to dosimetry validation
- 2024
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Ingår i: Biomedical Optics Express. - 2156-7085. ; 15:2, s. 863-874
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Tidskriftsartikel (refereegranskat)abstract
- Phantoms simultaneously mimicking anatomical and optical properties of real tissues can play a pivotal role for improving dosimetry algorithms. The aim of the paper is to design and develop a hybrid phantom model that builds up on the strengths of solid and liquid phantoms for mimicking various anatomical structures for prostate cancer photodynamic therapy (PDT) dosimetry validation. The model comprises of a photosensitizer-embedded gelatin lesion within a liquid Intralipid prostate shape that is surrounded by a solid silicone outer shell. The hybrid phantom was well characterized for optical properties. The final assembled phantom was also evaluated for fluorescence tomographic reconstruction in conjunction with SpectraCure’s IDOSE software. The developed model can lead to advancements in dosimetric evaluations. This would improve PDT outlook as a clinical treatment modality and boost phantom based standardization of biophotonic devices globally.
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| 2. |
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| 3. |
- Andrews, Carin, et al.
(författare)
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Impairments, functional limitations, and access to services and education for children with cerebral palsy in Uganda : a population-based study
- 2020
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Ingår i: Developmental Medicine & Child Neurology. - : Mac Keith Press. - 0012-1622 .- 1469-8749. ; 62:4, s. 454-462
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Tidskriftsartikel (refereegranskat)abstract
- AIM: To describe the functional limitations and associated impairments of children with cerebral palsy (CP) in rural Uganda, and care-seeking behaviour and access to assistive devices and education.METHOD: Ninety-seven children with CP (42 females, 55 males; age range 2-17y) were identified in a three-stage population-based screening with subsequent medical examinations and functional assessments. Information on school and access to care was collected using questionnaires. The data were compared with Swedish and Australian cohorts of children with CP. We used the χ2 test and linear regression models to analyse differences between groups.RESULTS: Younger children were more severely impaired than older children. Two-fifths of the children had severe impairments in communication, about half had intellectual disability, and one third had seizures. Of 37 non-walking children, three had wheelchairs and none had walkers. No children had assistive devices for hearing, seeing, or communication. Care-seeking was low relating to lack of knowledge, insufficient finances, and 'lost hope'. One-third of the children attended school. Ugandan children exhibited lower developmental trajectories of mobility and self-care than a Swedish cohort.INTERPRETATION: The needs for children with CP in rural Uganda are not met, illustrated by low care-seeking, low access to assistive devices, and low school attendance. A lack of rehabilitation and stimulation probably contribute to the poor development of mobility and self-care skills. There is a need to develop and enhance locally available and affordable interventions for children with CP in Uganda.WHAT THIS PAPER ADDS: Development of mobility and self-care skills is lower in Ugandan than Swedish children with cerebral palsy (CP). Older children in Uganda with CP are less impaired than younger children. Untreated seizures and impairments of communication and intellect are common. Access to health services, assistive devices, and education is low. Caregivers lack knowledge and finances to seek care and often lose hope of their child improving.
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| 4. |
- Artman, Henrik, et al.
(författare)
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Acquisition of usable IT : Acquisition projects to reflect on
- 2009
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- By examining how several organizations have gone through the process of procuring IT systems, we have seen that there is a great need for procurer organizations themselves to understand their role in systems development. What is their responsibility for the outcome of the acquisition process? What is their responsibility for the outcome of the system-in-use? Can they actually take responsibility for the usability of systems? This collection of papers is meant to be a starting point for procurer organizations to reflect on that responsibility, as well as on how they manage the acquisition process. The papers are informed by academic research and grounded in scientific studies, but they are also to be taken as practical efforts to describe the process. We hope they will nurture reflection, and encourage those who are taking a stand to make IT systems usable. Our assumption is that the sooner an organization comes to terms with how the future system will actually be used, the sooner it will be profitable or beneficial.
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| 5. |
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| 6. |
- Aweko, Juliet, et al.
(författare)
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Patient and Provider Dilemmas of Type 2 Diabetes Self-Management : A Qualitative Study in Socioeconomically Disadvantaged Communities in Stockholm
- 2018
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI AG. - 1661-7827 .- 1660-4601. ; 15:9
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Tidskriftsartikel (refereegranskat)abstract
- Studies comparing provider and patient views and experiences of self-management within primary healthcare are particularly scarce in disadvantaged settings. In this qualitative study, patient and provider perceptions of self-management were investigated in five socio-economically disadvantaged communities in Stockholm. Twelve individual interviews and four group interviews were conducted. Semi-structured interview guides included questions on perceptions of diabetes diagnosis, diabetes care services available at primary health care centers, patient and provider interactions, and self-management support. Data was analyzed using thematic analysis. Two overarching themes were identified: adopting and maintaining new routines through practical and appropriate lifestyle choices (patients), and balancing expectations and pre-conceptions of self-management (providers). The themes were characterized by inherent dilemmas representing confusions and conflicts that patients and providers experienced in their daily life or practice. Patients found it difficult to tailor information and lifestyle advice to fit their daily life. Healthcare providers recognized that patients needed support to change behavior, but saw themselves as inadequately equipped to deal with the different cultural and social aspects of self-management. This study highlights patient and provider dilemmas that influence the interaction and collaboration between patients and providers and hinder uptake of self-management advice.
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| 7. |
- Axelsson, Johan, et al.
(författare)
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In vivo photosensitizer tomography inside the human prostate
- 2009
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Ingår i: Optics Letters. - 0146-9592. ; 34:3, s. 232-234
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Tidskriftsartikel (refereegranskat)abstract
- Interstitial photodynamic therapy (IPDT) provides a promising means to treat large cancerous tumors and solid organs inside the human body. The treatment outcome is dependent on the distributions of light, photosensitizer, and tissue oxygenation. We present a scheme for reconstructing the spatial distribution of a fluorescent photosensitizer. The reconstruction is based on measurements performed in the human prostate, acquired during an ongoing IPDT clinical trial, as well as in optical phantoms. We show that in an experimental setup we can quantitatively reconstruct a fluorescent inclusion in a fluorescent background. We also show reconstructions from a patient showing a heterogeneous distribution of the photosensitizer mTHPC in the human prostate. (C) 2009 Optical Society of America
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| 8. |
- Baker, Ulrika, et al.
(författare)
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Unpredictability dictates quality of maternal and newborn care provision in rural Tanzania : A qualitative study of health workers' perspectives
- 2017
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Ingår i: BMC Pregnancy and Childbirth. - : Springer Science and Business Media LLC. - 1471-2393 .- 1471-2393. ; 17
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Tidskriftsartikel (refereegranskat)abstract
- Background: Health workers are the key to realising the potential of improved quality of care for mothers and newborns in the weak health systems of Sub Saharan Africa. Their perspectives are fundamental to understand the effectiveness of existing improvement programs and to identify ways to strengthen future initiatives. The objective of this study was therefore to examine health worker perspectives of the conditions for maternal and newborn care provision and their perceptions of what constitutes good quality of care in rural Tanzanian health facilities. Methods: In February 2014, we conducted 17 in-depth interviews with different cadres of health workers providing maternal and newborn care in 14 rural health facilities in Tandahimba district, south-eastern Tanzania. These facilities included one district hospital, three health centres and ten dispensaries. Interviews were conducted in Swahili, transcribed verbatim and translated into English. A grounded theory approach was used to guide the analysis, the output of which was one core category, four main categories and several sub-categories. Results: `It is like rain' was identified as the core category, delineating unpredictability as the common denominator for all aspects of maternal and newborn care provision. It implies that conditions such as mothers' access to and utilisation of health care are unreliable; that availability of resources is uncertain and that health workers have to help and try to balance the situation. Quality of care was perceived to vary as a consequence of these conditions. Health workers stressed the importance of predictability, of `things going as intended', as a sign of good quality care. Conclusions: Unpredictability emerged as a fundamental condition for maternal and newborn care provision, an important determinant and characteristic of quality in this study. We believe that this finding is also relevant for other areas of care in the same setting and may be an important defining factor of a weak health system. Increasing predictability within health services, and focusing on the experience of health workers within these, should be prioritised in order to achieve better quality of care for mothers and newborns.
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| 9. |
- Bengtsson, Niklas, et al.
(författare)
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Fetal Iodine Deficiency and Schooling : A Replication of Field, Robles, and Torero (2009)
- 2020
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Ingår i: Scandinavian Journal of Economics. - : Wiley. - 0347-0520 .- 1467-9442. ; 122:2, s. 582-621
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Tidskriftsartikel (refereegranskat)abstract
- Scholars have theorized that congenital health endowment is an important determinant of economic outcomes later in a person's life. Field, Robles, and Torero (2009, American Economic Journal: Applied Economics 1, 140-169) find large increases in educational attainment caused by a reduction of fetal iodine deficiency following a set of iodine supplementation programs in Tanzania. We revisit the Tanzanian iodine programs with a narrow and wide replication of the study by Field et al. We are able to exactly replicate the original results. We find, however, that the findings are sensitive to alternative specification choices and sample restrictions. We try to address some of these concerns in the wide replication; we increase the sample size fourfold, and we improve the precision of the treatment variable by incorporating new institutional and medical insights. Despite the improvements, no effect is found. We conclude that the available data do not provide sufficient power to detect a possible effect, as treatment assignment cannot be measured with sufficient precision.
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| 10. |
- Bergström, Anna, et al.
(författare)
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Health system context and implementation of evidence-based practices-development and validation of the Context Assessment for Community Health (COACH) tool for low- and middle-income settings
- 2015
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Ingår i: Implementation Science. - : Springer Science and Business Media LLC. - 1748-5908. ; 10
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Tidskriftsartikel (refereegranskat)abstract
- Background: The gap between what is known and what is practiced results in health service users not benefitting from advances in healthcare, and in unnecessary costs. A supportive context is considered a key element for successful implementation of evidence-based practices (EBP). There were no tools available for the systematic mapping of aspects of organizational context influencing the implementation of EBPs in low- and middle-income countries (LMICs). Thus, this project aimed to develop and psychometrically validate a tool for this purpose. Methods: The development of the Context Assessment for Community Health (COACH) tool was premised on the context dimension in the Promoting Action on Research Implementation in Health Services framework, and is a derivative product of the Alberta Context Tool. Its development was undertaken in Bangladesh, Vietnam, Uganda, South Africa and Nicaragua in six phases: (1) defining dimensions and draft tool development, (2) content validity amongst in-country expert panels, (3) content validity amongst international experts, (4) response process validity, (5) translation and (6) evaluation of psychometric properties amongst 690 health workers in the five countries. Results: The tool was validated for use amongst physicians, nurse/midwives and community health workers. The six phases of development resulted in a good fit between the theoretical dimensions of the COACH tool and its psychometric properties. The tool has 49 items measuring eight aspects of context: Resources, Community engagement, Commitment to work, Informal payment, Leadership, Work culture, Monitoring services for action and Sources of knowledge. Conclusions: Aspects of organizational context that were identified as influencing the implementation of EBPs in high-income settings were also found to be relevant in LMICs. However, there were additional aspects of context of relevance in LMICs specifically Resources, Community engagement, Commitment to work and Informal payment. Use of the COACH tool will allow for systematic description of the local healthcare context prior implementing healthcare interventions to allow for tailoring implementation strategies or as part of the evaluation of implementing healthcare interventions and thus allow for deeper insights into the process of implementing EBPs in LMICs.
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