트럼프의 이란 비핵화와 “real deal”의 가능성: JCPoA 파기와 향후 전망

백승훈 단국대학교 GCC국가연구소 2018 GCC Issue Paper Vol.25 No.-

실제적인 색과 형태를 위한 세라믹 제작

백승훈,Baek, Seung-Hun 대한심미치과학회 2015 Journal of the Korean Academy of Esthetic Dentistr Vol.24 No.2

To harmonize with the remaining natural teeth a dentist and technician make an effort to do. Dental ceramic perfectly reproduce the functionality and esthetic is so moved that will deliver to the patient. However It is not easy to overcome the problem. Actually, it can't have the same spectrum curve between different object. The spectrum curve and reflectance is a unique feature of an object like fingerprints. So it is not that the identification of spectral curves that we usually focuses color. We need to understand the process of matamerism makes something like a combination of color perception. In other word that will tell in our field with ceramic teeth of the patient wish to match the color matching process to simulate the cone in our retinas with the same combination.

임신 중 교통사고로 인한 경추 염좌 환자 1례 증례보고

백승훈,나효석,박현재,정은아,최순 대한한방부인과학회 2005 大韓韓方婦人科學會誌 Vol.18 No.1

Purpose : With the development of society, traffic accident(TA) rate is increasing accordingly. And the number of women in pregnancy who are damaged by TA is increasing as more women are involved in economical and social activities. TA victim in pregnancy cannot get proper treatment(Tx) in western medicine. Oriental medicine Tx is noted as alternative in treating TA victims recently. The main purpose of this clinical study is to make a survey of effective way of the oriental gynecological Tx about TA victim in pregnancy. Methods : The patient in this case, 28-year-old, was admitted for 14days(27th/May/ 2004 - 9th/June/2004) to cure severe neck pain and limitaion of cervical ROM(range of motion) occured from TA on the 4th week of pregnancy. This patient was treated with the acupunture, herbal medicine and physical treatment. Result and Conclusion : The symptoms of patient in this case are remarkable alleviated. And we think that the TA victims in pregnancy can be managed effectively by oriental gynecological Tx due to consider preservation of fetus and pregnant woman. After this, further study, approach and case will be needed about oriental gynecological Tx of TA victims in pregnancy.

국토교통 항공안전기술개발사업 추진현황

백승훈 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.4

국토교통부와 국토교통과학기술진흥원은 국제기준에 부합하는 우리나라 항공안전기술 확보는 물론 항공산업을 차세대 신성장동력 산업으로 육성하고 수출기반 조성을 위한 항공안전기술개발사업을 2007년 부터 추진하고 있다. ‘14년까지 2인승, 4인승 항공기 인증사업, 관제 및 위성항행시스템분야, 출입국간소화 등 공항운영 효율화 분야에 약 2,767억원을 투자하였고, ’15년에도 약 440억원을 투자할 계획이다. 국토교통부와 국토교통과학기술진흥원은 항공안전기술개발사업에 지속적인 투자로 항공안전 및 항공산업 육성에 기여할 계획이다. Since 2007, MOLIT(Ministry of Land, Infrastructure and Transport) and KAIA(Korea Agency of Infrastructure technology Advancement)have been carrying out Aviation Safety Technology Research Program to promote aviation safety and aviation industry as an advanced new growth power. Until 2014, about 276 billion won were invested. Aviation Safety R&D program includes small aircraft certification project, CNS/ATM(communication, navigation, surveillance and air traffic management) project, and simplification of airport passenger process project and so on. In 2015, 44 billion won will be invested. MOLIT and KAIA have a plan to invest this programto contribute to the advancement of aviation safety.

췌장의 관강내 유두상 점액 종양: 췌장절제방법을 결정하는 데 있어 관강내 세경초음파 단층촬영술의 역할

백승훈,조영덕,장재영,천영국,김영석,문종호,김연수,이문성,허경열,심찬섭,김부성 대한소화기내시경학회 2005 Clinical Endoscopy Vol.31 No.2

Background/Aims: The treatment of choice of intraductal papillary mucinous neoplasm (IPMN) is partial pancreatic resection with complete excision of this potentially malignant lesion, thus preserving sufficient pancreatic tissue to ensure endocrine and exocrine functions. This strategy, however, requires a reliable preoperative assessment of the highly variable extension of IPMN. We performed this study to determine the role of intraductal ultrasonography (IDUS) in predicting the extension of IPMN and selecting the resection methods of pancreas. Methods: A preoperative assessment of IPMN by IDUS was performed in 12 patients who underwent a surgical resection of IPMN. According to the preoperative localization of IPMN by IDUS, various types of limited pancreatic resections were planned. The histologic examination of the frozen section of the pancreatic cut surface was performed in all patient. In the cases of tumor involvement as cut surface margin, a modification of the planned pancreatic resection was done. Results: Technical success was achieved in all 12 cases (100%). There were positive tumor margin of cut surfaces in 2 patients. Of 10 cases whose frozen tissue evaluation of the pancreatic cut surface had been negative at first, one patieat has turned out to be margin positive in permanent section examination, finally. Overall accuracy of IDUS in predicting the continuous extension of IPMN was 75%. Conclusions: IDUS is a reliable diagnostic modality to guide the resection extent of the pancreas in patients with IPMN. 목적: 췌관내유두상점액종양은 췌장 선암과 비교하여 예후가 좋아 정확하고 신속한 진단과 적극적인 치료가 필요하다. 또한 악성여부를 정확하게 알 수 있는 표지자나 검사 방법이 없으므로 췌관내유두상점액종양이 의심될 때에는 수술적 요법을 고려해야 한다. 그러나 병변의 특징상 췌관을 미만성으로 침범하여 어떠한 수술 술식을 해야할지 결정하기 어려운 경우가 많은 문제점이 있다. 이에 저자들은 췌관내유두상점액종양의 수술 술식을 결정하는 데 있어 관강내세경초음파단층촬영술(intraductal ultrasonography, IDUS)의 역할을 평가하고자 본 연구를 시행하였다. 대상 및 방법: 1997년 1월부터 2001년 8월까지 영상학적 검사를 통하여 췌관내유두상점액종양으로 의심된 17예 중 12예에서 췌장절제술을 시행하였다. 췌장절제술을 시행한 12예(남:녀=5:7, 평균연령: 54.6세)의 환자 모두에서 수술 전에 IDUS를 시행하였으며, IDUS의 결과에 따라 술식을 사전에 결정, 수술을 시행하였고, 수술 중 절제면의 동결절편 조직검사를 통하여 수술범위를 최종 결정하였다. 수술 전의 IDUS소견 및 수술 후 병리소견을 비교분석하였다. 결과: 모든 예에서 주췌관 내로 초음파탐촉자의 삽입이 가능하였으며 전체 12예 중 8예에서 췌미부까지 관찰할 수 있었다. IDUS에 의거하여 췌장절제술을 시행하였을 때 최초 췌장절단면에서 종양세포 양성 소견을 보인 예는 2예였고, 이 2예에서는 절제범위를 변경하였다. 수술시 동결 절편에서 종양세포 음성을 보였던 10예 중 1예에서 최종 수술표본의 절제면에서 종양세포가 관찰되어 수술 전 췌관내유두상점액종양의 위치 및 침습정도를 평가하는데 있어 IDUS의 진단의 정확도는 75%였다. 결론: 췌관내유두상점액종양환자에서 외과적 절제를 고려할 때 수술 전 IDUS의 시행은 췌장절제술식 및 절제면을 결정하는데 매우 유용한 검사방법으로 생각한다.

The Effect of Left Subclavian Artery Coverage During Endovascular Repair of the Thoracic Aortic Aneurysm on Cerebral Hemodynamics: Two Cases of Flow Measurement by using 2D Phase Contrast Magnetic Resonance Imaging

백승훈,윤성원,권오춘,이섭,이종민,김호균 대한자기공명의과학회 2012 Investigative Magnetic Resonance Imaging Vol.16 No.2

The proximity of thoracic aortic aneurysm to the left subclavian artery (LSA) has made the coverage of LSA during thoracic endovascular aortic repair (TEVAR) be essential. Despite controversy concerning the safety of LSA coverage and the indications for LSA revascularizations, the cerebral hemodynamic change after LSA coverage has not been demonstrated. We prospectively examined two patients who would undergo TEVAR with LSA coverage by using 2D cine phase contrast MR imaging. After LSA coverage, the left subclavian steal was properly compensated by the increased flow volumes of both carotid arteries and right vertebral artery, which is the major collateral supply. The total brain supply after TEVAR did not lessen, which showed good correlation with uneventful clinical outcome. Therefore, 2D phase contrast MR imaging can be recommended as a useful technique to evaluate the hemodynamic change of the LSA coverage during TEVAR and to triage the candidate for LSA revascularization.

혈장 섬유소 용해능 측정법의 평가

백승훈,이홍복,변종훈,계경채,박선양 大韓血液學會 1990 大韓血液學會誌 Vol.25 No.1

비확공성 전향적 상완골 금속정 고정술후 견관절 기능에 대한 임상적 및 방사선학적 평가: 초음파를 이용한 회전근 개 추시관찰

백승훈,최창혁,Baek, Seung-Hoon,Choi, Chang-Hyuk 대한정형외과초음파학회 2013 대한정형외과 초음파학회지 Vol.6 No.1

Purpose: The purpose is to perform objective evaluation for rotator cuff using ultrasonography and validate factors influencing cuff integrity as well as efficacy of follow-up ultrasonography after unreamed antegrade intramedullary nailing for humerus fracture. Materials and Methods: Seventeen patients with an average age of $55.7{\pm}18.6$ years underwent antegrade intramedullary nailing for humerus fracture and follow-up ultrasonography of shoulder joint. Mean follow-up period was $43.5{\pm}32.2$ months. Intraoperative evaluation for preoperative cuff tear was performed, of which four cuffs were repaired by single row repair technique. Clinical evaluation included visual analogue scale (VAS), range of motion, Korean Shoulder Scoring System (KSS) and American Shoulder and Elbow Society (ASES) score. Ultrasonographic evaluation was performed on cuff integrity and protrusion of proximal nail tip as well. Radiographic evaluation included time to union, protrusion of proximal nail tip and migration of proximal interlocking screw which could affect shoulder joint function. Results: Mean VAS at last follow-up was $1.65{\pm}1.84$ points. Range of motion showed forward flexion of $137.0{\pm}33.5^{\circ}$, external rotation of $43.5{\pm}12.7^{\circ}$ and internal rotation of $16.4{\pm}2.0^{\circ}$ while KSS score and ASES score were $79.6{\pm}20.7$ and $83.7{\pm}17.0$ points, respectively. Bone union was demonstrated in all cases and average time to union was $3.4{\pm}1.3$ months. Migration of proximal interlocking screw was shown in 6 cases (35%). On ultrasonographic evaluation, there were normal in 8 (47%), weaving in 4 (24%), partial tear in 5 cases (29%), but no complete tear. Protrusion of proximal nail tip was demonstrated in 8 cases (47%) on plain radiographs whereas in 11 cases (65%) on ultrasonography and was associated with increasing age (p=0.038). Ultrasonographic weaving and partial tear was associated with protrusion of proximal nail tip (p=006), but not with repair of preoperative tear (p>0.05). Conclusion: Because weaving and partial tear on ultrasonography originated from protrusion of proximal nail tip, careful insertion of nail and meticulous repair of cuff during operation lead to stable fixation with satisfactory recovery of shoulder function follow-up ultrasonography can be a useful tool for evaluating protrusion of nail tip and rotator cuff tear, of which diagnosis is difficult on plain X-ray after antegrade intramedullary nailing for humerus fracture.

경제 : 현대위기설의 진상

백승훈 사회평론 1992 월간 사회평론 Vol.92 No.4

자기공명영상 기술을 이용한 방울토마토의 과실 내부 특성 변화 연구

백승훈,김명호,이준구,김성민 한국산업식품공학회 2017 학술대회 및 심포지엄 Vol.2017 No.04

방울토마토는 냉·한대 지역을 제외하고는 세계적으로 생산 및 소비되는 채소로 수확 후 품질관리 등에 대한 연구가 많이 이루어지고 있다. 본 연구에서는 비파괴 측정 방법들 중 하나인 자기공명영상(Magnetic Resonance Imaging, MRI)기술을 활용하여 방울토마토의 품종 및 성숙단계별 과실 내부 구조의 변화를 비교하였다. 공시재료는 방울토마토 3품종(티아라, 티아라_TY, 유니콘)에 대하여 성숙단계를 과피색을 기준으로 6단계로 세분화하고 3반복으로 MRI 영상을 획득하였다. 실험은 전북대학교 부설 농업기계 ICT 융합 연구소가 보유하고 있는 MRI 시스템을 활용하여 이미지를 얻었다. 자기공명영상 이미지는 Gradient Echo 펄스열을 사용하였고, 횡단면(Axial)의 영상면(Image Direction)을 중심으로 영상영역(Field of View, FOV)은 50 mm x 50 mm로 1회 촬영할 때마다 20개의 영상들을 얻었다. 촬영하여 얻은 영상들과 직접적으로 비교하기 위해 영상면과 같은 방향으로 임의적으로 방울토마토의 중간을 칼로 잘라 비교하였다. 촬영과 실제 잘라 내부를 비교해본 결과, 방울토마토 내부 심실의 수는 다른 품종들에 비해 티아라 품종이 가장 많았다. 생육단계별로는 3품종 모두 마지막 단계(Red Stage)의 중과피의 형태가 뚜렷하게 구분되지 않았으며, 특히 유니콘품종의 경우 다른 품종들에 비해 더 빠르게 모호해지는 것을 알 수 있었다. 또한 유니콘 품종의 경우, 다른 두 품종에 비해 미숙단계인 1,2단계(Green Stage, Breaker Stage)에서 중과피의 형태가 빠르게 발달하는 것이 확인되었다. 본 연구를 통하여, 방울토마토와 같이 성숙단계별 내부 변화가 크게 일어나는 과실에 대하여 비파괴 자기공명영상으로 분석함으로써 재배 환경조건에 따른 품종별 내부 생리장해 및 형태의 신속한 변화 탐지에 효율적으로 활용될 수 있는 가능성을 확인하였다.