Does The Mitral Annulus Shrink or Enlarge During Systole? A Real-Time 3D Echocardiography Study

권준,전민재,김대혁,박금수,이우형 대한의학회 2009 Journal of Korean medical science Vol.24 No.2

This study was conducted to explore the geometrical changes of the mitral annulus during systole. The 3D shape of the mitral annulus was reconstructed in 13 normal subjects who had normal structure of the mitral apparatus using real-time 3D echocardiography (RT3DE) and 3D computer software. The two orthogonal (antero-posterior and commissure-commissure) dimensions, the areas (2D projected and 3D surface) and the non-planarity of the mitral annulus were estimated during early, mid and late systole. We demonstrated that the MA had a “saddle shape” appearance and it consistently enlarged mainly in the antero-posterior direction from early to late systole with lessening of its non-planarity, as was determined by 3D reconstruction using RT3DE and 3D computer software.

논문 / 리엔트런트형 연소실 현상이 디젤기관의 연소특성에 미치는 영향 - 연소실 형상비 ( Bowl 직경 / Bowl 깊이 ) 의 효과 -

권준박(Kwon J . B .),김형섭(Kim H . S .),권순익(Kwon S . I .),오재건(Oh K . J .) 한국액체미립화학회 1996 한국액체미립화학회지 Vol.1 No.4

도로 수탁공사의 효과적 수행을 위한 방법론

박권준(Bak Gwon-June),김성근(Kim Sung-Keun) 대한토목학회 2010 대한토목학회논문집 D Vol.30 No.2D

지방정부의 도시계획은 지속적인 프로세스로 계획의 수립과 함께 끝나는 것이 아니고 의시결정, 검토와 평가단계를 거쳐서 지속적으로 바뀌는 것이다. 도시계획이 바뀌고 확정됨에 따라서 대규모의 도로를 기존에 수행되고 있던 도로와 연계하여 공사를 수행하게 되는 경우도 발생하게 된다. 이러한 경우에 기시공된 도로의 폭과 길의 확장, 추가적인 교량 및 터널의 건설, 그리고 인터체인지의 크기와 위치의 변경 등과 같은 요인들에 의하여 도로설계 및 시공에 많은 변화를 가져오게 된다. 과거에는 제한된 수와 제한된 공종에 한하여 도로 수탁공사가 수행되어 왔으나, 현재는 수행되는 수탁공사의 수도 증가하고 있으며, 대규모 복합공종을 위한 수탁공사가 이루어지고 있다. 그러나 수탁공사 수행을 위한 절차나 수탁공사 계약을 위한 가이드라인이 마련되어 있지 않다. 따라서 효과적인 도로 수탁공사를 수행하는데 어려움이 있다. 본 논문에서는 공사관련 서류들과 전문들의 면담을 통하여 수탁공사 수행을 위한 중요 고려요소를 파악하였고, 이 결과에 근거하여 수탁공사의 표준절차(안)과 수탁공사비 협의를 위한 가이드라인을 제시하였다. 또한 위탁기관이 부담해야 하는 비용에 관한 내용을 제시하였다. The city planning of a local government is a continuous process that does not end with the creation of a plan but proceeds through decision-making, monitoring and evaluation phases. As a new city planning is changed and confirmed, there is a chance to construct a large scale road that is connected with an under constructed road. In this case, the expansion of the width and length of road, the addition of bridges or tunnels, and the change of the size and location of interchanges lead to many changes on road design and construction. In the past, the consignment contracts for a road construction have been made in limited numbers and for limited civil works. Now, it is growing in numbers and is making for large scale multi-works. However, the standard process and guidelines for the consignment contracts have not been suggested yet, so there is difficulty in performing the consigned road construction effectively. In this paper, the important factors for the consignment contracts are determined by construction document reviews and expert interviews. Based on these results, a standard process for the consigned contracts and a guideline for agreeing on construction cost are suggested. The costs that should be paid by a consignor are also defined.

양극성 장애의 한국형 약물치료 알고리듬

박원명,신영철,전덕인,윤보현,김대진,안용민,권준수,민경준 대한정신약물학회 2002 대한정신약물학회지 Vol.13 No.3

Objective : Treating patients with bipolar disorder has many problems such as recurrent various episodes, breakthroughs, treatment resistance, switching and worsening of its course. In addition to these obstacles, recent developments of psychiatric medications make it difficult to choose the appropriate pharmacological options. This study was performed to survey the expert opinion of medication treatment for bipolar disorder. Methods : The survey questionnaire used in 'The Expert Consensus Guideline Series - Medication Treatment of Bipolar Disorder 2000' was translated in Korean and amended by executive committee according to Korean situations. Forty eight of 50(96%) members of review committee completed the survey. Results : In acute manic episode lithium or divalproex is a first-line drug as a monotherapy, and combination treatment is considered in partial or non-responder. Carbamazepine is also a first-line drug in dysphoric and mixed episodes. For moderate and more severe depression, an antidepressant is added with a mood stabilizer. For psychotic bipolar disorder, mania or depression, both atypical antipsychotics and high potency typical antipsychotics are preferred, but the latter is less likely to be recommended. A mood stabilizer should be used in rapid cycling bipolar illness. For manic episode in rapid cycler a mood stabilizer and an atypical antipsychotic drug are recommended in combination as an initial treatment. Conclusion : Most experts present strong consensus for many options concerning to initial strategies and first-line medications, although there are some non-consensus and gaps between research data and clinical usage in some steps. Nevertheless these data might be a cornerstone for producing the Korean medication algorithm for bipolar disorder.

주요 정신 질환 약물치료의 한국형 알고리듬 개발

권준수,박원명 대한의사협회 2004 대한의사협회지 Vol.47 No.2

심근조영초음파 검사를 이용한 측부혈류의 관동맥조영 검사 등급에 따른 심근관류의 평가

권준(Jun Kwan),홍의수(Eui Soo Hong),김대혁(Dae Hyeok Kim),전민재(Min Jae Jeon),서정기(Jeong Kee Seo),박금수(Keurm Soo Park),이우형(Woo Hyung Lee) 대한내과학회 2000 대한내과학회지 Vol.58 No.2

N/A Background : A collateral flow can be assessed and graded by coronary angiography, however, the technique does not provide any information about perfusion. Myocardial contrast echocardiography (MCE) can assess collateral perfusion and has superior spatial resolution in defining its distribution. Objective : To investigate the difference of transmural perfusion according to the angiographical collateral grade in normal myocardium, we performed MCE of collateral artery in 16 patients (m : f = 11 : 5, age: 57±13yrs.) with angina and compared the results with the angiographical grades. Methods : In six patients with preexisting collaterals on baseline angiography, we performed MCE after intracoronary injection of sonicated Hexabrix. For 10 patients without preexisting collaterals on baseline angiography, we performed angiography, MCE for recruited collateral arteries during balloon inflation of stenotic coronary arteries (2 times for 120sec.). For 12 patients who underwent PTCA, we performed pressure wire simultaneously with angiography and MCE for recruited collateral arteries during balloon inflation. Fractional collateral flow(FCF) was defined by the ratio of coronary wedge pressure to proximal pressure(Pw/Pa). Angiographical collaterals were graded according to 'Rentrop' criteria(grade 0-3). Transmural thickness (TMT) and enhanced myocardial thickness (EMT) of an enhanced segment on MCE were measured at diastolic phase. The depth of collateral perfusion was estimated by collateral perfusion index (CPI) that was the ratio of EMT to TMT. Results : There were significant differences of CPI with respect to angiographical grades according to one way ANOVA test (p<0.05). One of five patients who had no recruited collaterals showed partial enhancement confined to the epicardium with CPI of 0.24. There was significant correlation between the angiographical grade and the CPI with Spearman's Rho value of 0.93(p<0.0001). The angiographical grades were significantly correlated with FCF with the Spearman's Rho value of 0.87(p=0.0002). There was also significant correlation between FCF and CPI with Pearson's r=0.81(p=0.0016). Conclusion : The higher the angiographical collateral grade is, the higher the collateral pressure and the deeper the fractional transmural perfusion from epicardium into endocardium gets. (Korean J Med 58:170-179, 2000)

포스터 전시 : 다형 홍반양 피부 소견을 보인 adult onset Still`s disease 1예

박영도,권준일,조재위,정상립,이규석 대한피부과학회 2009 대한피부과학회 학술발표대회집 Vol.61 No.1

Ganser 증후군 1례의 임상적 고찰

박원명,권준수 대한신경정신의학회 1990 신경정신의학 Vol.29 No.2

We have experienced a 22year-old soldier with Ganser syndrome. He showed appropriate but incorrect answer, clouded consciousness, somatic symptoms and hallucinations. Also, differential diagnosis and psychodynamics were discussed with review of literature. There have heen a controversy in nosological status of this syndrome. Further stundy is required to understand the nature of this syndrome.

아두이노를 이용한 손목 내비게이션 시스템

권준호,박상대,김건우,주복규 한국인터넷방송통신학회 2017 한국인터넷방송통신학회 논문지 Vol.17 No.3

도시가 발전함에따라 도로시스템이 매우 복잡해진다. 따라서 현대인은 목적지를 찾아가기 위해 내비게이션에 의존하고 있으며, 심지어 길을 걷거나 자전거를 이용하는 경우에도 내비게이션의 도움이 필요하다. 일반적인 내비게이션은 차안에 설치되어 있거나 스마트폰의 앱으로 있기 때문에 걷거나 자전거를 타면서 사용하는 것은 매우 불편하다. 또한 장애인의 경우 보행 시 사용하기에는 거의 불가능 하다. 이 논문에서 우리는 보행자나 자전거 통행자들이 사용하기에 편리한 손목에 착용하는 내비게이션 시스템을 제안하고, 아두이노를 이용한 손목 내비게이션의 설계와 구현에 대하여 기술하였다. 이러한 시스템은 일반 보행자뿐만 아니라 장애인들도 사용할 수 있어 그들이 사회활동에 참여하는데 크게 기여할 것이다. As cities develops, road systems become more and more complicated. These days people depends on navigation systems when walking as well as driving cars. General navigation systems are either installed in cars or exists as smart phone applications. Therefore, it is very difficult to use them while walking or riding bicycles. Moreover, disabled person cannot use them to find his destinations. In this paper, we propose a bracelet navigation system for walkers and disabled people, and describe the design and implementation of such a device. This navigation will help not only walkers and people riding bicycle but also disabled people to actively participate their social activities.

포스터 전시 : 다형 홍반양 피부 소견을 보인 adult onset Still`s disease 1예 (초)

박영도,권준일,조재위,정상립,이규석 대한피부과학회 2009 초록집 Vol.47 No.10