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Ortner’s 증후군에 의해 발생한 일측성 성대마비 1예
박상후,박헌수,배우용,이동근 대한후두음성언어의학회 2019 대한후두음성언어의학회지 Vol.30 No.2
The causes of vocal cord paralysis include iatrogenic injury during thyroid or cervical surgery, heart and chest surgery, and tumorous lesion such as laryngeal cancer and lung cancer. In addition to these common causes, rarely, cardiovascular disease can also cause vocal fold paralysis. A disease known as Cardiovocal syndrome, or Ortner’s syndrome, causes left vocal fold paralysis when the left recurrent laryngeal nerve is compressed by the pulmonary artery and aorta, which is occurred by pulmonary hypertension from heart disease. We report for the first case in Korea the diagnosis of vocal fold paralysis caused by Ortner’s syndrome.
박상후,김상준,이동근,강명구 대한이비인후과학회 부산,울산,경남 지부회 2021 임상이비인후과 Vol.32 No.1
Background and Objectives: Since Eustachian tube (ET) plays an important role in the development of middle ear disease, evaluating the function of ET is important. Valsalva maneuver is frequently used, but does not reflect the physiological function. Inflation-deflation test assess both active and passive function of the ET, so it can reflect the physiological function. In our clinic, we use device named EustachiTM to evaluate ET. In this study, we evaluated ET in patients with perforated eardrums using Valsalva maneuver, inflation-deflation test and Eustachi to evaluate the efficacy of Eustachi in assessing ET function. Materials and Methods: 51 dry perforated eardrums were selected. Patients were divided into 3 groups according to the result of the inflation-deflation test; Type A, ET opens in both positive and negative pressure; Type B, ET opens in either positive or negative pressure; Type C, ET dose not open in neither positive nor negative pressure. All patients performed Valsalva maneuver and Eustachi application. Techniques were statistically analyzed and compared. Results: When analyzing whether Valsalva was possible according to the type of inflation-deflation test, there were statistical differences when comparing type A, B and type A, C (p=0.000, 0.024). There was no statistical difference between type B and C (p=1.000). When analyzing the result of Eustachi according to the type of inflation-deflation test, there was no statistical difference between type A and B (p=1.000), while there were statistical differences when comparing type A, C and type B, C (p=0.048, 0.030). Conclusions: Compared with the results of inflation-deflation test, Eustachi can evaluate ET more physiologically than Valsalva maneuver
박상후,박민경,이동근 대한이비인후과학회 부산,울산,경남 지부회 2020 임상이비인후과 Vol.31 No.1
Non-Hodgkin’s lymphoma from salivary gland origin is rarely found. Parotid gland is the most common site because of its presence of intra glandular lymph nodes. Moreover non-Hodgkin’s lymphoma from the submandibular gland is extremely rare. We report a case of diffuse large B cell lymphoma in the submandibular gland which was initially misdiagnosed as a chronic sialadenitis with fine needle aspiration biopsy.
박상후,배우용,김상준,박민경 대한이비인후과학회 2022 대한이비인후과학회지 두경부외과학 Vol.65 No.1
Meningioma is one of the most common tumors of the central nervous system. However, primaryextra cranial meningioma is rare as it consists 1%-2% of meningioma. It is very rare inparanasal sinus and accounts for about 0.1% of the paranasal sinus tumor. The treatment ofchoice is complete surgical excision of the tumor. Herein, with a review of the literature, wereport a rare case of primary extra cranial meningioma in a 38-year-old male.
서비스품질지각에 기반한 대학도서관 이용자 만족도와 충성도 분석
박상후,오동근,Park, Sang-Hoo,Oh, Dong-Geun 한국과학기술정보연구원 과학기술정보센터 2007 Journal of Information Science Theory and Practice Vol.38 No.2
This study investigates the influences of the perceptions on the dimensions of the library service quality (library staff, supports for the service, library materials and information resources, and facilities and equipments) of academic library users on the customer satisfaction, importance of the services, and the loyalty (reuse intentions). Based on the questionnaires surveyed from 403 undergraduate students of the K University, it analyzed the data using SPSS 12.0. All four dimensions of the service quality influenced statistically on the customer satisfaction. The dimension of the support for the service, importance of the service, and customer satisfaction influenced statistically on the loyalty. 이 연구는 대학도서관의 서비스품질차원(도서관 직원, 서비스지원, 자료 및 정보자원, 시설 및 장비)에 대한 지각이 이용자의 전반적인 만족도, 서비스의 중요성, 충성도(재이용의도)에 미치는 영향을 밝히기 위한 것이다. 이를 위해 이 연구에서는 K대학교 도서관을 이용하는 학부생 403명을 대상으로 설문조사를 실시하였다. 선행연구에 대한 분석을 통해 제시한 인과적 모델을 설문데이터를 바탕으로 SPSS 12.0을 사용하여 경로분석(path analysis) 등을 통해 검증하였다. 분석결과 각 서비스품질차원은 모두 이용자의 전반적인 만족도에 통계적으로 유의한 영향을 미치는 것으로 나타났다. 또한 1개 서비스품질(서비스지원)과 서비스 중요성, 전반적인 만족도는 충성도(재이용의도)에 통계적으로 유의한 영향을 미치는 것으로 나타났다.
극미세 3차원 형상의 정밀제작을 위한 이광자 흡수 광중합 공정의 레이저 출력-조사시간 제어방법
박상후,임태우,양동열,공홍진,이광섭 대한화학회 2005 대한화학회지 Vol.49 No.3
본 연구는 나노 스테레오리소그래피(nano-stereolithography) 공정에서 정밀한 3차원 형상을 제작하기 위한 레이저 출력-조사시간 제어방법에 관한 것이다. 이를 위하여 펨토초 레이저에 의한 이광자 흡수 광중합 (two-photon polymerization)을 이용하여 마이크로 3차원 형상을 제작하는 방법을 제시하였으며, 이광자 흡수현상을 이용할 경우 레이저의 빔 파장 이하의 정밀도를 얻을 수 있기 때문에 나노 수준의 정밀도를 가지는 형상을 제작할 수 있었다. 개발된 나노 스테레오리소그래피 공정은 3차원 형상데이터에서 2차원 단면 데이터를 추출한 뒤 2차원 단면을 제작하고 높이방향으로 적층하여 임의의 3차원 형상을 제작하게 된다. 따라서 2차원 단면을 제작하는 단위 복셀의 세장비가 3차원 형상제작의 중요한 공정변수가 되므로 본 연구에서는 최소출력 및 최소 조사시간법(minimum power & minimum exposure time: MPMT)을 제안하여 낮은 세장비를 가진 복셀을 제작하도록 시도하였다
구강 내 접근법으로 부이하선에 발생한 다형선종 제거를 실패한 1예를 통한 교훈
박상후,허재원,이동근 대한이비인후과학회 2023 대한이비인후과학회지 두경부외과학 Vol.66 No.4
An accessory parotid gland is salivary gland tissue that exists separately anterior to the parot-id gland. Since malignant tumors can be found in about 50% of accessory parotid tumors, thestandard treatment is radical resection via externa l approach. However, with the developmentof endoscopic surgery in the head and neck field, the transoral approach using an endoscope isalso being tried. Although this technique could remove benign tumors without skin incision,there may be cases where removal via transoral approach may prove difficult. The authors ex-perienced a case of failed attempt to remove pleomorphic adenoma in the accessory parotidgland via transoral approach in a 24-year-old male patient. We analyzed the causes of surgicalfailure in this case from various perspectives. We believe that our lessons from this failed casecould help determine the appropriate surgical indications of transoral approach in the acces-sory parotid gland tumor.