http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
급성 출혈성 직장 궤양의 임상적 그리고 내시경적 특징소견과 재출혈의 위험인자
박성한 ( Sung Han Park ),김태오 ( Tae Oh Kim ),이정남 ( Jung Nam Lee ),유현석 ( Hyun Seok You ),류동엽 ( Dong Yup Ryu ),이봉은 ( Bong Yun Lee ),송근암 ( Geun Am Song ) 대한장연구학회 2009 Intestinal Research Vol.7 No.1
Background/Aims: Acute hemorrhagic rectal ulcers (AHRUs) are rare and have not been thoroughly studied. This study aimed to assess the clinical and endoscopic characteristics of AHRUs and to determine the risk factors for rebleeding after the initial management. Methods: Thirty patients who underwent colonoscopy within 48 hours of the onset of hematochezia were consecutively enrolled between January 2004 and December 2007. The patients were divided into a rebleeding group and a non-rebleeding group according to presence of recurrent bleeding after initial management. We analyzed the clinical features, including the underlying disorder, the Karnofsky performance status (PS), the use of anticoagulant or antiplatelet agents, the endoscopic findings, and the methods used for hemostasis. Results: All of the patients were elderly, in a bedridden status, and all had experienced the sudden onset of massive, fresh rectal bleeding without pain. The characteristics of the lesions on colonoscopy included solitary or multiple rectal ulcers, or Dieulafoy lesions located in the distal rectum. There were no differences between the two groups based on mean age, gender, use of anticoagulant or antiplatelet agents, PS, methods of hemostasis, and clinical outcomes. The PT (INR) and endoscopic findings (Dieulafoy types), however, differed significantly between the two groups (p=0.024 and p=0.013, respectively). Conclusions: When massive hematochezia occurs in bedridden patients with severe comorbid illnesses, AHRUs should be considered in the differential diagnosis. It is advisable to be vigilant for rebleeding in patients with prolongation of the PT (INR) and Dieulafoy-type ulcers on colonoscopy. (Intest Res 2009;7:8-13)
Half-fan 모드를 이용한 방사선치료환자 위치교정을 위한 디지털영상 합성영상기술에 관한 예비연구
박천주,박성호,김진성,한영이,주상규,신은혁,신정석,박희철,안용찬,Park, Justin C.,Park, Sung-Ho,Kim, Jin-Sung,Han, Young-Yih,Ju, Sang-Gyu,Shin, Eun-Hyuk,Shin, Jung-Suk,Park, Hee-Chul,Ahn, Yong-Chan,Song, Willian Y. 한국의학물리학회 2010 의학물리 Vol.21 No.4
최근 정밀한 암 치료를 위해 방사선 치료기술이 강도변도 방사선치료, 영상유도 방사선치료 등의 눈부신 발전을 이루어 왔다. 2000년 이후로는 치료실에서 환자의 실제 치료위치를 정확히 파악하여 정밀한 치료를 가능하게 하는 영상 유도방사선 치료기술이 사용되고 있으며 가장 중요한 기술 중 하나가 방사선 치료 전에 다양한 방법의 의료 영상을 이용하여 환자의 치료 위치를 보정하는 것으로 가장 최근의 기술로는 선형가속기에 장착된 2차원 평면검출기를 이용한 콘빔CT (Cone Beam CT: CBCT)가 사용되고 있다. 본 연구에서는 기존의 CBCT의 "half fan" 조건에서 획득된 projection영상을 이용하여 360도 회전한 모든 영상이 아닌 제한된 각도에서 획득한 투사영상을 이용하여 환자의 해부학적 정보를 볼 수 있는 디지털 영상합성영상(Digital Tomosynthesis) 기술을 구현하였고 실제 위치교정을 위해 촬영된 환자 데이터를 이용하여 방사선 치료 환자 위치 교정을 위한 효용성을 검증하였다. 그 결과 동일 단층상에서의 해부학적 정보 표현에서 CBCT 영상과 비교하였을 때 유사성을 보였고 선량적인 측면에서 우월성을 나타냈다. 이러한 DTS의 장점을 극대화 하고 최적화가 이루어진다면 방사선 치료 위치 보정용으로 CBCT를 대체 할 수 있는 기술이 될 수 있을 것이라 기대한다. To generate on-board digital tomosynthesis (DTS) for three-dimensionalimage-guided radiation therapy (IGRT) as an alternative to conventional portal imaging or on-board cone-beam computed tomography (CBCT), two clinical cases (liver and bladder) were selected to illustrate the capabilities of on-board DTS for IGRT. DTS images were generated from subsets of CBCT projection data (45, 162 projections) using half-fan mode scanning with a Feldkamp-type reconstruction algorithm. Digital tomosynthesis slices appeared similar to coincident CBCT planes and yielded substantially more anatomic information. Improved bony and soft-tissue visibility in DTS images is likely to improve target localization compared with radiographic verification techniques and might allow for daily localization of a soft-tissue target. Digital tomosynthesis might allow targeting of the treatment volume on the basis of daily localization.
천안시 주민들의 주택보유형태 및 주택점유형태 결합선택 분석
박성휘(Park, Sung-Hwie),한종호(Han, Jong-Ho),이성렬(Lee, Sung-Ryul) 한국산학기술학회 2011 한국산학기술학회논문지 Vol.12 No.4
본 연구는 다항로짓분석을 이용하여 천안시 주민들의 가구별 주택특성 및 사회경제적 변수가 주택보유형태 및 주택점유형태의 결합선택에 미치는 영향을 분석하고자 한다. 분석 결과, 자가-비아파트에 살고 있는 가구는 주로 오랜 기간 지역을 지켜온 원주민들의 특성을 나타내고 있음을 확인할 수 있었다. 또한 임대-아파트에 거주하는 가구 는 수도권 거주경험도 가지고 있으며 언제든지 수도권으로의 이전을 생각하여 자가 주택을 구입하지 않는다는 것을 알 수 있었다. 한편 가구의 다양한 사회경제적 변수가 주택선택에 영향을 미침을 알 수 있었는데, 예를 들어 가구주 의 연령이 높을수록, 그리고 거주기간이 길고, 학생 수가 많을수록, 임대주택보다는 자가주택을 선호하였다. This study explores the plausible socio-economic variables that influence joint choice of tenure and dwelling type in Cheonan. For estimating these joint choice models, multinomial logit framework is employed. Following the practice of other studies, we chose the age of householder, education level of householder, occupation of householder, residence duration in Cheonan, experience of capital area residence, plan of capital area move and the monthly income of household as socio-economic variables, and size of house, access of subway area, residence area as house characteristics. According to the estimation result, we can derive som implications. For example, the higher monthly income of household, more member of student, bigger size of house, longer residence duration of Cheonan, the more they prefer owing house apartment to renting it. In addition, as householders are older, size of house is bigger, they prefer owing-non apartment to owing house-apartment.
박종학 ( Jong Hak Park ),김정윤 ( Jung Youn Kim ),신준현 ( Jun Hyun Shin ),윤영훈 ( Young Hoon Yoon ),조한진 ( Han Jin Cho ),문성우 ( Sung Woo Moon ),최성혁 ( Sung Hyuk Choi ),이성우 ( Sung Woo Lee ),홍윤식 ( Yun Sik Hong ) 대한외상학회 2010 大韓外傷學會誌 Vol.23 No.1
Purpose: In Korea, most abdominal penetrating wounds are caused by stab wounds rather than gun-shot wounds. However, not many studies have been performed on stab injuries and their epidemiologic characteristics. Disagreements of opinions of obligatory surgical exploration and conservative treatment exist, and this subject is still being debated. Therefore, the authors studied the epidemiologic characteristics of abdominal stab wound patients visiting the emergency department and reviewed the proportion of patients that received nontherapeutic surgery and conservative treatment. Methods: This study included patients visiting the emergency department with abdominal stab wounds. A retrospective chart review was done on the abdominal stab wound patients. Sex, age, cause of injury, location of wound, initial vital signs, operation results, injured organs and CT & LWE results were reviewed. Results: The median age of the 121 patients was 40.9 years, of these patients, 88 were males, of which 52 (43.0%) were drunken. Of the patients that received non-therapeutic operations, only 3 patients (15.0%) were drunken, significantly lower than the therapeutic operation group. For the location of the wound, most patients were injured in the right and left upper quadrants, 27 patients each. The most common injured organ was the small bowel; 13 patients were injured in the small bowel. With abdominal CT scans and local wound explorations together, the results exhibited a sensitivity of 97%, a specificity of 44%, a positive predictive value of 56%, and a negative predictive value of 95%. Conclusion: In our study, the sensitivity was 97% when CT & LWE were performed together; thus we can conclude that CT and LWE can be used together to select the treatment method. Although in our study, the surgical indications in abdominal stab wound patients is not sufficient, our results showed a higher rate of nontherapeutic surgery compared to previous studies. Therefore, more research is needed to prevent unnecessary laparotomies in hemodynamically-stable patients without symptoms. (J Korean Soc Traumatol 2010;23:21-28)
박한정 ( Han Jung Park ),성준모 ( Jun Mo Sung ),김무정 ( Moo Jung Kim ),최길순 ( Gil Soon Choi ),예영민 ( Young Min Ye ),박해심 ( Hae Sim Park ) 대한천식알레르기학회 2009 천식 및 알레르기 Vol.29 No.1
Heparin is used for thromboprophylaxis in patients on hemodialysis, hemofiltration or continuous renal replacement therapies. Heparin-related immediate-type hypersensitivity reactions such as urticaria, angioedema or bronchospasm are very rare, and only a few cases of anaphylaxis-like responses have been described. We experienced the case of a 67-year-old female patient with an end-stage renal disease who presented generalized urticaria induced by heparin during hemodialysis. She began to experience recurrent itching and generalized urticaria after 2 weeks of the initiation of hemodialysis. The episodes started within 30 minutes of hemodialysis with heparin infusion; either sodium heparin or dalteparin (low molecular weight heparin) was used. Utilization of different dialyzers was unable to avoid the episodes, and these symptoms could be reduced when she was treated with heparin-free hemodialysis. She had no previous history of allergic diseases. In order to confirm the causative agent, we measured serum specific IgE antibodies against ethylene oxide, latex and formaldehyde using immunoCAP (Phadia, Sweden) and obtained negative results. Although skin prick tests and intradermal tests to the used heparin showed negative results, the intravenous provocation test using 1,500 U of heparin (with a bolus-loading dose of 1,000 U and a continuous intravenous infusion of 500 U for 3 hours) reproduced an immediate-onset generalized urticaria with itching sensation. We report herein a case of heparin-induced urticaria during hemodialysis in Korea. Because of increasing use of heparin in medical practice, physicians should be aware of possible immediate hypersensitivity reactions to this medication. (Korean J Asthma Allergy Clin Immunol 2009;29:69-73)