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이한빈,김윤,임병수,김종욱,김진권 대한신경과학회 2014 대한신경과학회지 Vol.32 No.4
Coagulopathies are a relatively common cause of young-age stroke. We present herein a 15-year-old male who wasadmitted for acute cerebral infarction with dysarthria and weakness of the right side. He had previously been diagnosedwith autosomal dominant protein-S deficiency. His left internal carotid artery was totally occluded. Emergencymechanical thrombolysis resulted in recanalization of that occluded artery and consequent improvement in symptoms. The patient was discharged with an oral anticoagulant.
이륜차사고 영향요인 종합분석을 통한 위험지역 도출 - 서울시 강남구를 중심으로
이한빈,김휘언,김세영,정승환,소현기,김태영,박광헌 전북대학교 문화융복합아카이빙연구소 2021 디지털문화아카이브지 Vol.4 No.2
시간이 지날수록 교통사고 사망률은 감소하고 있지만, 이륜차 교통사고는 증가하고 있다. 이륜차 교통사고 감소를 위한 여러 노력의 일환으로 사고구간 안내 서비스가 이루어지지만, 기존의 사고 다발지역만을알리는 기능의 한계로 그 효과를 기대하기 어렵다. 본 연구는 단순 사고지역 안내의 한계를 넘어 교통사고발생 위험지역을 예측하는 모델을 구축하여 사고 위험도가 높은 지역을 분석하였다. 최근 5년간의 사고데이터와 사고에 영향을 주는 데이터를 수집하여 단계적 변수 선택법을 통해 영향력을 분석하였고, 이를 통해 선정된 변수들을 OLS회귀분석과 지리적 가중회귀분석(GWR)의 결정계수 값을 비교하여 가중회귀모델(GWR)을 활용한 모델로 격자의 사고 위험도를 산출하였다. 연구 결과 역삼 아르누보 호텔 사거리, 언주역사거리, 경기고교 앞 사거리 등 기존 사고다발 지역 외에도 위험도가 높은 지역들이 있음을 알 수 있다 As time goes by, the mortality rate of traffic accidents is decreasing, but two-wheeled traffic accidents are increasing. Although accident section guidance services are provided as part of various efforts to reduce traffic accidents for two-wheeled vehicles, it is difficult to expect the effect due to the limitations of the function of informing only the existing accident-prone areas. This study established a model to predict areas which have risk of traffic accidents beyond the limits of simple accident area guidance and analyzed areas with high accident risk through visualization. Accident data over the past five years and data influencing accidents were collected and analyzed through a stepwise variable selection method, and the selected variables were compared with the coefficient of determination of ordinary least squares(OLS) and geographically weighted regression (GWR) to calculate the risk of grid accidents.
이한빈,임혜진,조민혁,양석민,박기현,박훈이,정연훈 대한이비인후과학회 2013 Clinical and Experimental Otorhinolaryngology Vol.6 No.3
Objectives. Mastoid obliteration is used to obliterate the mastoid cavity following a mastoidectomy or to prevent the formation of a retraction pocket. This study evaluated the effectiveness of β-tricalcium phosphate and polyphosphate (β-TPP) for mastoid obliteration in middle ear surgeries in prospective human and animal studies. Methods. Twenty patients with chronic otitis media underwent mastoid obliteration using β-TPP after a intact canal wall mastoidectomy or simple mastoidectomy. The clinical data were prospectively evaluated including: the diagnosis,temporal bone computed tomography (TBCT), otoscopic findings, pure tone audiogram, and complications. In the animal experiment, β-TPP was applied into the right bulla in five rats, and the opposite bulla was used as the control in the non-obliterated state. The skulls of five other rats were drilled out and the holes were obliterated with β-TPP. TBCT were obtained at 3, 6, and 9 months after the obliteration and histologic analysis was done at 3 and 9 months after surgery. Results. In the human study, fourteen TBCTs were obtained at 12 months after the surgery. All demonstrated no bone resorption in the obliterated mastoids. Among the 15 cases displaying retracted tympanic membranes preoperatively,11 showed no retraction, 2 showed retraction postoperatively, 1 was lost to follow-up and 1 was a case of postoperative wound infection. Among 20 cases, one case developed a postoperative infection that necessitated a second operation. Sixteen underwent ossiculoplasty; hearing improvements were obtained in 15 cases and 1 case showed decreased hearing. In the animal study, new bone formation without significant bone resorption in the radiologic and histologic findings were noted in both the skull and bulla groups. Conclusion. Although β-TPP is a foreign material having the possibility of infection, mastoid obliteration with it can be a treatment option in middle ear surgeries to prevent retraction pockets or the recurrence of diseases.