An Open Medical Platform to Share Source Code and Various Pre-Trained Weights for Models to Use in Deep Learning Research

Deep learning-based applications have great potential to enhance the quality of medical services. The power of deep learning depends on open databases and innovation. Radiologists can act as important mediators between deep learning and medicine by simultaneously playing pioneering and gatekeeping roles. The application of deep learning technology in medicine is sometimes restricted by ethical or legal issues, including patient privacy and confidentiality, data ownership, and limitations in patient agreement. In this paper, we present an open platform, MI2RLNet, for sharing source code and various pre-trained weights for models to use in downstream tasks, including education, application, and transfer learning, to encourage deep learning research in radiology. In addition, we describe how to use this open platform in the GitHub environment. Our source code and models may contribute to further deep learning research in radiology, which may facilitate applications in medicine and healthcare, especially in medical imaging, in the near future. All code is available at https://github.com/mi2rl/MI2RLNet.

Factors Associated with Self-Rated Health among Poor Glycemic Control Group with Diabetes Mellitus: The 4th–6th Korea National Health and Nutrition Examination Survey (2007–2015) / 보건행정학회지

BACKGROUND@#This study aimed to properly manage diseases such as blood sugar control so that patients with diabetes can benefit from both medication and health activities. Also, these health practices are greatly influenced by self-rated health, a subjective assessment of health status. Because self-rated health does not necessarily match the objective health status, it is important to identify which factors affect self-rated health.@*METHODS@#For the study, the data was gathered from the 4th–6th National Health Nutrition Survey (2007–2015). Out of the total 73,353 participants in the survey, 2,303 patients with uncontrolled blood sugar with an HbA1c level of more than 7% were selected for the final study. Dependent variables fell into two categories depending on how the participant reported whether he or she was in good health or not. Independent variables included socio-demographics, health behavioral, and health status factors. This study performed logistic regression analysis.@*RESULTS@#Out of 2,303 participants, 18.1% reported that their heath was ‘good,’ despite the fact that their blood sugar level was not controlled. After running a logistic regression model, the odds ratio of groups that perceive subjective health awareness as good was higher in the groups of people as below: in the people over 60 years old; in the people who graduated from a junior college or higher than those who had a level of education of primary school completion or less; in the people living in Chungnam than those living in Seoul; and in the group with hypertriglyceridemia.@*CONCLUSION@#The study identified factors associated with those failed to perceive the blood sugar level as a severe health problem despite of the fact that blood sugar was not controlled. To improve public health, diabetes management policies need to be addressed to population groups with these problems above.

Infrastructure-building for Public Health: The World Health Organization and Tuberculosis Control in South Korea, 1945–1963 / 의사학

This paper examines WHO's involvement in South Korea within the context of the changing organization of public health infrastructure in Korea during the years spanning from the end of the Japanese occupation, through the periods of American military occupation and the Korean War, and to the early years of the Park Chung Hee regime in the early 1960s, in order to demonstrate how tuberculosis came to be addressed as a public health problem. WHO launched several survey missions and relief efforts before and during the Korean War and subsequently became deeply involved in shaping government policy for public health through a number of technical assistance programs, including a program for tuberculosis control in the early 1960s. This paper argues that the principal concern for WHO was to start rebuilding the public health infrastructure beyond simply abolishing the remnants of colonial practices or showcasing the superiority of American practices vis-à-vis those practiced under a Communist rule. WHO consistently sought to address infrastructural problems by strengthening the government's role by linking the central and regional health units, and this was especially visible in its tuberculosis program, where it attempted to take back the responsibilities and functions previously assumed by voluntary organizations like the Korea National Tuberculosis Administration (KNTA). This interest in public health infrastructure was fueled by WHO's discovery of a cost-effective, drug-based, and community-oriented horizontal approach to tuberculosis control, with a hope that these practices would replace the traditional, costly, disease-specific, and seclusion-oriented vertical approach that relied on sanatoria. These policy imperatives were met with the unanticipated regime change from a civilian to a military government in 1961, which created an environment favorable for the expansion of the public health network. Technology and politics were intricately intertwined in the emergence of a new infrastructure for public health in Korea, as this case of tuberculosis control illustrates.

Development of animal experimental periodontitis models

PURPOSE: An animal periodontitis model is essential for research on the pathogenesis and treatment of periodontal disease. In this study, we have introduced a lipopolysaccharide (LPS) of a periodontal pathogen to the alveolar bone defect of experimental animals and investigated its suitability as a periodontitis model. METHODS: Alveolar bone defects were made in both sides of the mandibular third premolar region of nine beagle dogs. Then, the animals were divided into the following groups: silk ligature tied on the cervical region of tooth group, Porphyromonas gingivalis LPS (P.g. LPS)-saturated collagen with silk ligature group, and no ligature or P.g. LPS application group as the control. The plaque index and gingival index were measured at 0 and 4 weeks postoperatively. The animals were then euthanized and prepared for histologic evaluation. RESULTS: The silk ligature group and P.g. LPS with silk ligature group showed a significantly higher plaque index at 4 weeks compared to the control (P<0.05). No significant difference was found in the plaque index between the silk ligature group and P.g. LPS with silk ligature group. The P.g. LPS with silk ligature group showed a significantly higher gingival index compared to the silk ligature group or the control at 4 weeks (P<0.05). Histologic examination presented increased inflammatory cell infiltration in the gingival tissue and alveolar bone of the P.g. LPS with silk ligature group. CONCLUSIONS: An additional P.g. LPS-saturated collagen with silk ligature ensured periodontal inflammation at 4 weeks. Therefore, P.g. LPS with silk ligature application to surgically created alveolar bone defects may be a candidate model for experimental periodontitis.