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RISS 인기검색어
- 검색키워드
- 저자 : Hui-Chung Teng (검색결과 2 건)
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Hui-Chung Teng,Huei-Lung Liang,Yih-Huie Lin,Jer-Shyung Huang,Chiung-Yu Chen,Shang-Chieh Lee,Huay-Ben Pan 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.2
Objective: To evaluate the clinical efficacy as well as long-term clinical outcomes of superselective microcoil embolization for lower gastrointestinal bleeding (LGIB). Materials and Methods: Between 1997 and 2009, 26 patients with intended transcatheter embolotherapy for LGIB were retrospectively reviewed. Embolization was performed only when the catheter could be advanced to or distal to the mesenteric border of the bowel. The main purpose of our study was to assess technical success, recurrent bleeding rate and complications. We also evaluated the long-term clinical outcome, including late recurrent LGIB, bowel ischemia and the survival rate. Results: Twenty-two bleeding sources were in the territory of superior mesenteric artery and four in the inferior mesenteric artery. Technical success was achieved in 22 patients (84.6%). The target vessel of embolization was vasa recta in seventeen patients and marginal artery in the remaining five patients. Early rebleeding occurred in two patients (7.7%) and bowel ischemia in two patients, of whom the embolized points were both at the marginal artery. Delayed recurrent bleeding (> 30 days) occurred in two angiodysplasia patients. Five patients (19.2%) died within the first 30 days of intervention. Long-term follow-up depicted estimated survival rates of 58.2 and 43.1% after one, and five years, respectively. Conclusion: Transcatheter embolotherapy to treat LGIB is effective with low rebleeding and ischemic complications. Considering the advanced age and complex medical problems of these patients, the minimal invasive embolotherapy may be used as both a primary and potentially definitive treatment of LGIB.
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DEVELOPMENT AND ANALYSIS OF BUS WITH COMPOSITE-MATERIAL-REINFORCED FRAMES
Tso-Liang Teng,Cho-Chung Liang,Hui-Min Chu 한국자동차공학회 2022 International journal of automotive technology Vol.23 No.5
The bus frame structures suffer serious deformation or fracture and then damage the survival space of passengers. The superstructure of a bus is a frame member that supports the vehicle’s load and incorporates other parts for strength enhancement and impact absorption. Therefore, superstructures of bus play an essential role in protecting passengers in case of rollover accidents. Currently, the frames of large passenger vehicles are mostly manufactured using steel materials. The selection of a composite material that exhibits lightweight and outstanding structural strength has become an imperative topic in research on the reinforcement of large passenger vehicles’ frames. This study examined a vehicle frame reinforced using steel coated with composite materials. According to the relevant regulations in ECE R66 on the superstructure strength of large passenger vehicles, the LS-DYNA simulation was employed to perform structural analysis. A composite-materialreinforced frame was employed to simulate the crush test, thereby evaluating the effect of such reinforcement on enhancing the strength of vehicle frames. Finally, a rollover simulation test was performed according to ECE R66 on a vehicle whose entire frame was constituted by composite-material-reinforced steel. This study’s proposed vehicle frame material for design improvements can serve as references for manufacturers of large passenger vehicle bodies to improve the quality of their product development.
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