医用电子直线加速器在使用中应注意的安全性问题及对策

简要介绍了医用电子直线加速器在日常使用工作中应注意的一些安全性问题，并提出了相应的解决对策和建议，为同行们在医用电子直线加速器的安全管理和使用操作提供参考。     

电子表式止血带的设计

把电子计时器功能和传统卡式止血带相结合，设计出一种带有计时报警功能的电子表式止血带。具有一定的先进性和创新性，     

Semi-supervised learning of the electronic health record for phenotype stratification

Patient interactions with health care providers result in entries to electronic health records (EHRs). EHRs were built for clinical and billing purposes but contain many data points about an individual. Mining these records provides opportunities to extract electronic phenotypes, which can be paired with genetic data to identify genes underlying common human diseases. This task remains challenging: high quality phenotyping is costly and requires physician review; many fields in the records are sparsely filled; and our definitions of diseases are continuing to improve over time. Here we develop and evaluate a semi-supervised learning method for EHR phenotype extraction using denoising autoencoders for phenotype stratification. By combining denoising autoencoders with random forests we find classification improvements across multiple simulation models and improved survival prediction in ALS clinical trial data. This is particularly evident in cases where only a small number of patients have high quality phenotypes, a common scenario in EHR-based research. Denoising autoencoders perform dimensionality reduction enabling visualization and clustering for the discovery of new subtypes of disease. This method represents a promising approach to clarify disease subtypes and improve genotype-phenotype association studies that leverage EHRs.     

Publishing data from electronic health records while preserving privacy: A survey of algorithms

The dissemination of Electronic Health Records (EHRs) can be highly beneficial for a range of medical studies, spanning from clinical trials to epidemic control studies, but it must be performed in a way that preserves patients’ privacy. This is not straightforward, because the disseminated data need to be protected against several privacy threats, while remaining useful for subsequent analysis tasks. In this work, we present a survey of algorithms that have been proposed for publishing structured patient data, in a privacy-preserving way. We review more than 45 algorithms, derive insights on their operation, and highlight their advantages and disadvantages. We also provide a discussion of some promising directions for future research in this area.     

Digital video analysis of health professionals’ interactions with an electronic whiteboard: A longitudinal,naturalistic study of changes to user interactions

As hospital departments continue to introduce electronic whiteboards in real clinical settings a range of human factor issues have emerged and it has become clear that there is a need for improved methods for designing and testing these systems. In this study, we employed a longitudinal and naturalistic method in the usability evaluation of an electronic whiteboard system. The goal of the evaluation was to explore the extent to which usability issues experienced by users change as they gain more experience with the system. In addition, the paper explores the use of a new approach to collection and analysis of continuous digital video recordings of naturalistic “live” user interactions. The method developed and employed in the study included recording the users’ interactions with system during actual use using screen-capturing software and analyzing these recordings for usability issues. In this paper we describe and discuss both the method and the results of the evaluation. We found that the electronic whiteboard system contains system-related usability issues that did not change over time as the clinicians collectively gained more experience with the system. Furthermore, we also found user-related issues that seemed to change as the users gained more experience and we discuss the underlying reasons for these changes. We also found that the method used in the study has certain advantages over traditional usability evaluation methods, including the ability to collect analyze live user data over time. However, challenges and drawbacks to using the method (including the time taken for analysis and logistical issues in doing live recordings) should be considered before utilizing a similar approach. In conclusion we summarize our findings and call for an increased focus on longitudinal and naturalistic evaluations of health information systems and encourage others to apply and refine the method utilized in this study.     

Baby Gate–Related Injuries Among Children in the United States, 1990–2010

ObjectiveBaby gates are one of the most widely used home safety products to protect children from home hazards. The objective was to describe the epidemiology of baby gate and barrier-associated injuries among children. It was hypothesized that injuries experienced by children ages ≤2 years and those >2 years were significantly different as a result of differences in gate interactions.MethodsA retrospective analysis was conducted by using nationally representative data from the National Electronic Injury Surveillance System. A total of 1188 actual cases were reviewed and national estimates generated.ResultsAn estimated 37,673 children were treated in emergency departments for injuries associated with gates, yielding an average of 1794 cases annually. The incidence of gate-related injuries increased significantly from 3.9 per 100,000 children in 1990 to 12.5 per 100,000 children in 2010 (P < .001). Patients were primarily boys (61.0%) and were <2 years of age (60.4%). Patients <2 years of age were most often injured by falls down stairs (odds ratio 6.72; 95% confidence interval 6.32–7.16) after the collapse of the gate. Patients aged 2 to 6 were most often injured by contact with the gate (odds ratio 2.03; 95% confidence interval 1.95–2.12), resulting in open wounds (55.4%) and soft-tissue injuries (24.2%).ConclusionsGiven the clear dichotomy between injury characteristics of patients aged <2 years and patients aged 2 to 6 years of age, as well as the prevalence of preventable injuries, greater efforts are needed to promote proper usage, ensure safety in product design, and increase awareness of age-related recommendations for use of gates.