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- Lekamlage, Charitha Dissanayake, et al.
(författare)
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Mini-DDSM : Mammography-based Automatic Age Estimation
- 2020
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450389044 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- Age estimation has attracted attention for its various medical applications. There are many studies on human age estimation from biomedical images. However, there is no research done on mammograms for age estimation, as far as we know. The purpose of this study is to devise an AI-based model for estimating age from mammogram images. Due to lack of public mammography data sets that have the age attribute, we resort to using a web crawler to download thumbnail mammographic images and their age fields from the public data set; the Digital Database for Screening Mammography. The original images in this data set unfortunately can only be retrieved by a software which is broken. Subsequently, we extracted deep learning features from the collected data set, by which we built a model using Random Forests regressor to estimate the age automatically. The performance assessment was measured using the mean absolute error values. The average error value out of 10 tests on random selection of samples was around 8 years. In this paper, we show the merits of this approach to fill up missing age values. We ran logistic and linear regression models on another independent data set to further validate the advantage of our proposed work. This paper also introduces the free-access Mini-DDSM data set. © 2020 ACM.
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- Thulesius, Hans, et al.
(författare)
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Pluralistic retasking. Re-thinking cancer diagnostics from a primary care physician perspective. A grounded theory study.
- 2020
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Ingår i: Core values of family medicine: Threats and opportunities. - : WONCA.
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Konferensbidrag (refereegranskat)abstract
- BackgroundCancer diagnostics is heterogeneous depending on disease type, age, gender, socioeconomical and geographical contexts of patients and caregivers.QuestionsHow could cancer be diagnosed in a more timely way from a primary care perspective?MethodsData from 1752 primary care physician (PCP) respondents in 20 countries and 20 Spanish and 7 Swedish PCP interviewees 2013-2019 analysed with classic grounded theory, especially free text responses to “How do you think the speed of diagnosis of cancer in primary care could be improved?”. Secondary analysis of interviews and literature. OutcomesWe call PCP's ideas on improved cancer work-up pluralistic retasking: task shifting among physicians, nurses, assistants and secretaries involving task redistribution, task sharing, task collaboration, changing tasks – cancer fast tracks or cancer screening instead of cancer case finding when appropriate. Cognitive retasking involves both slow rational thinking in algorithms and fast intuitive thinking through gut feelings. Digital retasking bridges time and place by eHealth to reduce “elsewhereism” of experts and power symmetry issues between patient/caregiver. Shrinking gaps between and amongst patients and caregivers requires care restructuring and reallocation of funds. Care refinancing is thus necessary to improve diagnostic timeliness. Good cancer diagnostics needs good time management. Not too early (to avoid overdiagnosis) and never too late.DiscussionPluralistic retasking is a conceptual summary of multiple strategies needed to optimise the timeliness of cancer diagnostics.Take Home Message for PracticeCan I do something differently to diagnose cancer in a more timely way?
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- Irestorm, Elin, et al.
(författare)
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Auditory hypersensitivity and attention in survivors of paediatric brain tumours
- 2020
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Konferensbidrag (refereegranskat)abstract
- Objective: Both auditory and visual hypersensitivity are clinical features of mental fatigue after acquired brain damage or in neurological disorders. Both types of hypersensitivity are also associated with attention deficits, especially in neurodevelopmental syndromes. The aim of this study was to examine auditory and visual hypersensitivity, and associations to attention, in a group of children and adolescents treated for paediatric brain tumours (PBTs).Participants and Methods: Included in the study were 34 survivors of PBTs, 8–18 years of age (M: 13.6, SD: 3.0). Eighteen participants were female and 16 were male. Mean time since diagnosis was 4.2 years (SD: 2.2). Auditory and visual hypersensitivity were assessed using two items from the questionnaire Mental Fatigue Scale (MFS), scored on a 7-point Likert scale from 0 – 3. Scores above 1 indicate hypersensitivity. Attention was assessed using Conners Continuous Performance Test 3 (detectability, commissions, variability), and T-scores above 60 were considered impaired. Spearman correlations were conducted between the performance-based and self-report measures.Results: Results from the MFS revealed that 53% of the survivors experienced auditory and 18% visual hypersensitivity as a sequela. Regarding attention, elevated scores were more common for detectability (18%) and variability (21%) than commissions (8%). Visual hypersensitivity was not significantly associated with any of the attention measures, whereas auditory hypersensitivity was significantly associated with detectability (r=.42, p=0.013) and variability (r=.57, p<0.001).Conclusions: These results suggest that auditory hypersensitivity is common after treatment for PBT, and that it is associated with decreased attention. This relationship should be taken into consideration when assessing survivors of PBTs.
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