• 대한방사선기술학회지:방사선기술과학
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• 제35권2호
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• pp.103-107
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• 2012

본 연구는 어깨 통증을 호소하는 환자들 중 어깨충돌 증후군(SIS : Shoulder Impingement Syndrome)이 의심되어 진단을 위해 Y-view 검사가 필요하지만 몸이 불편하여 자세를 취하기 힘든 환자들을 위하여 편안하게 누운 자세에서 검사할 수 있는 modified Y-View를 고안하기 위해 연구를 실시하였다. 환자는 바로 누운 자세를 취하고 X선관(tube)의 각도를 내측으로 35도, 40도, 45도로 변화를 주어 검사한 영상을 비교 분석해 본 결과 X선관(tube)의 각도를 내측방향으로 40도를 주는 것이 견봉(acromion)과 쇄골(clavicle)의 공간(space), 오훼견봉궁(coracoacromial arch)의 모양을 잘 묘출 할 수 있어 진단에 가장 유용한 영상을 얻을 수 있었다. 따라서 환자가 Y-View 검사를 할 수 없을 경우, 이를 대체하기 위한 유용한 수단으로 modified Y-View를 활용할 수 있음을 알 수 있었다. 이 연구를 통하여 어깨충돌 증후군뿐만 아니라 견관절 질환에서의 다양한 적용을 기대해 본다.

• 한국콘텐츠학회논문지
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• 제10권6호
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• pp.323-328
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• 2010

견관절 탈구나 골절로 인해 arm sliding를 착용한 환자에서 외전(abduction)이 불가능한 경우 superior-inferior axial projection view를 대신하여 시행하는 velpeau view는 탈구나 골절 환자가 상체를 뒤로 젖히는 자세를 취하기가 어려워 고통이 가중되었다. 하지만 환자의 상체를 숙여 검사하는 새로운 검사법인 'modified velpeau view'를 제안하며 검사 시 자세고정의 용이함과 임상적 유용성에 대해 알아 보고자 2009년 10월부터 2010년 1월까지 견관절 탈구나 골절로 의심되어 본원에 내원한 환자들 중 velpeau view 처방을 받은 환자 20명과 정상인 30명을 대상으로 velpeau view와 modified velpeau view에서 wall-bucky와 환자의 상체 숙임각(30도, 45도, 60도, 75도)의 변화에 따른 골 구조의 차이를 비교하였다. 영상의학과 전문의와 정형외과 전문의에게 영상평가 기준을 제시하고 0점부터 5점을 만점으로 영상이 평가되었다. 정상인군에서 wall-bucky와 상체의 숙임각 변화에 따른 골구조의 비교결과 45도와 60도가 velpeau view 와 비슷한 진단수준을 보였으며, 진단 가치를 증명하기 위한 영상평가 결과 velpeau view에서는 shoulder head의 anterior와 posterior, glenoid fossa의 anterior와 posterior를 관찰할 수 있었지만, modified velpeau view에서는 velpeau view에서 관찰되는 부위 뿐만 아니라 acromioclavicular joint와 coracoid process도 관찰할 수 있었다. modified velpeau view가 velpeau view와 비교시 velpeau view를 대체할 만한 수준의 진단적 가치를 지닌 유용한 검사임이 확인 되었다. 또한 modified velpeau view는 velpeau view position이 어려운 환자를 대상으로 적용 가능한 대체법으로서 뿐만 아니라 어깨 골절과 탈구 이외의 어깨 질환의 진단을 위한 새로운 검사로서의 임상적 적용을 위해 다양한 시각에서의 연구와 개선의 노력이 필요함을 시사한다.

• 한국임상수의학회지
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• 제17권1호
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• pp.194-204
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• 2000

Echocardiography was performed to obtain the optimal planes for diagnosis of canine heartworm disease in 11 dogs. Imaging planes were taken the left ventricular outflow tract long-axis view, 4-chamber long-axis view, chordae tendineae level short-axis view and modified pulmonary arteries level short-axis view in the right parasternal window, and aptical 4-chamber long-axis view in hte left parasternal window. After echocaridography, the pulmonary artery valve pat was ligated with double 1-0 silk under the general anesthesia to prevent heartworm moving from pulmonary artery to right ventricle. The dogs were euthanized and examained for heartworms in heart and great vessels. Many adult heartworms were identified ultrasonographically within main pulmonary artery, bifurcation of pulmonary artery and right pulmonary artery, but not identified within right ventricle and atrium. At necropsy, adult heartworms were mainly found in pulmonary artery in 11 days, and also found in right ventricular outflow tract and right ventricle in 2 of 11 dogs. The modified pulmonary arteries level short-axis view was the best imaging plane for identifiying heartworms because the main pulmonary artery, branches of pulmonary artery and right pulmonary artery could be showed. The aortic root internal dimension (AOID) and right pulmonary atery internal dimension (RPAID) were measured from the modified pulmonary ateries level short-axis view and left ventricular outflow tract long-axis view. The RPAID and RPAID/AOID was higher in heartworm infected dogs than normal Korea Jin-do dogs in modified pulmonary arteries level short-axis view, and the AOID, RPAID and RPIAID/AOID was higher than in left ventricular outflow tract long-axis view, respectively. These results indicate that the pulmonary arteries were the major habitat of adult heartworm in canine heartworm disease and the modified pulmonary arteries level short-axis view was the best imaging planes for identifying heartworms because the main pulmonary arteries could be showed. Therefore the modified pulmonary arteries level short-axis view can be used for diagnosing heartworm disease and for monitoring dilation of pulmonary artery.

• 한국항공우주학회지
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• 제33권4호
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• pp.57-62
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• 2005

인공위성의 outgassing 분자에 대한 역류오염 해석에는 BGK 또는 DSMC 등의 방법이 사용되어 왔으나, 이들은 해석이 복잡하고 시간이 오래 걸리는 등의 비효율성이 문제이다. 본 논문에서는 분자들의 충돌간 평균자유행로가 위성체의 크기에 비해 매우 길고, 동시에 위성체의 속도가 분자들의 열속도보다 매우 크다는 점을 이용하여, 간단한 근사모델을 도입함으로써 일반적인 view factor 법과 비슷한 편리성과 간편성을 가지면서 DSMC법과 정확하게 일치하는 결과를 주는 modified view factor 법을 개발, 제안한다.

• 한국임상수의학회지
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• 제17권1호
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• pp.187-193
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• 2000

Fifteen adult Korea Jin-do dogs were studied by echocardiography to obtain the basic data of the imaging planes and normal references ranges to the aorta and pulmonary artery internal dimension. Measurements of aortic root internal dimension(AOID) and right pulmonary artery internal dimension (RPAID) were made at modified pulmonary arteries level short-axis view and left ventricular outflow tract long-axis view. The aortic root internal dimension and right pulmonary artery internal dimension at modified pulmonary arteries level short-axis view were 18.7$\pm$1.3mm (mean$\pm$SD) and 10.1$\pm$0.8mm, respectively. And RPAID/AOID was 0.5$\pm$0.1mm. The aortic root internal dimension and right pulmonary artery internal dimension at left ventricular outflow tract long-axis view were 19.3$\pm$1.6 mm and 10.7$\pm$1.3mm, respectively. And RPAID/AOID was 0.5$\pm$0.1mm. These results indicate that modified pulmonary arteries level short-axis view is useful planes to examine the aortic root and pulmonary arteries, and aortic root internal dimension is significantly higher(40~50%)than the right pulmonary artery internal dimension. Therefore measurements of aortic root internal and right pulmonary artery internal dimension can be used for monitoring dilation of pulmonary artery.

• 대한화학회지
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• 제58권1호
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• pp.105-117
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• 2014

이 연구의 목적은 예비화학교사들이 사범대학에서 수강한 과학교육 과목은 학습관과 어떠한 관련성을 갖는지를 고찰하는 것이었다. 이를 위해, 예비교사 3인의 학습관 및 수강한 과학교육 과목과 관련한 설문과 면담을 실시하였다. 연구 결과, 예비교사들은 과학교육 과목의 수강을 통해 자신의 학습관을 변화, 수정하거나 유지, 강화하는 모습을 보였다. 과학교육 과목을 수강하기 전에 지녔던 예비교사 K와 P의 전통적 학습관은 과학교육 과목의 수강을 통해 구성주의적 학습관으로 변화하였다. 그러나 구성주의 학습관은, 학교 현장 실제성에 바탕을 둔 과학교육 과목 수강 이후에 다시 현장의 수업 상황을 고려하여 수정되고 변형되었다. 예비교사 H는 이전부터 지녔던 구성주의적 학습관에 전통적 학습관을 추가하여 지니게 되었다. 이로부터 정도와 방향의 차이는 있지만 예비교사 K, P, H 모두 과학교육 과목의 수강을 통해 학습관을 고찰하고 수정하는 것을 알 수 있다. 이러한 연구 결과는, 이론의 현장 적용을 강조한 과학교육 과목이 예비교사들로 하여금 자신의 학습관을 고찰하고 수정할 수 있는 기회를 제공한다는 것을 보여주는 것으로써, 교원 양성대학의 과학교육 과목의 내용에 현장성이 많이 반영되어야 할 것이며, 예비교사별 맞춤식 교수활동 및 학습관 정립을 위한 예비교사의 반성적 사고과정이 포함되어야 할 것임을 시사한다.

• 대한족부족관절학회지
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• 제10권1호
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• pp.60-65
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• 2006

Purpose: This study was performed to evaluate clinical and radiographical results of treatment of chronic lateral ankle instability with modified Brostrom procedure. Materials and Methods: This is a retrospective study of 22 cases in 22 patients treated with modified $Brostr{\ddot{o}}m$ procedure under the diagnosis of chronic lateral ankle instability from May 2000 to August 2004. Average age was 32.3 years. Average follow-up period was 23 months. Preoperative and postoperative radiographs of ankle anteroposterior view, lateral view and varus stress view were analyzed. The clinical evaluation was performed according to the Americal Orthopaedic Foot and Ankle Society scales. Results: After the modified $Brostr{\ddot{o}}m$ procedure, Americal Orthopaedic Foot and Ankle Society scales score was improved by average 28 points. Among the 22 cases, 13 cases were excellent, 3 cases good, 4 cases fair, and 2 cases poor with satisfaction of 73%. Five cases had intermittent ankle pain of whom 3 cases had difficulty during competitive sports activity. Lateral tilting of talus improved by average 5.4 degrees on varus stress view. Conclusions: The modified $Brostr{\ddot{o}}m$ procedure is one of the most effective methods for treating of chronic lateral ankle instability.

• 대한관절경학회지
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• 제2권2호
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• pp.135-140
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• 1998

From 1989 to 1994, authors have reconstructed the posterior cruciate ligament(PCL) in 51 knees with an autogenous central one-third of the patellar tendon by transtibial two tunnel technique, but there were not a few cases of unfavorable results. So from January 1995, we have reconstructed the PCL deficient knees by "modified tibial inlay technique" to avoid the grafted tendon abrasion at the posterior opening of the tibial tunnel(killer turn). Purpose of this study was to compare the results of two surgical techniques and what its advantages and disadvantages are. We could follow up 39 cases of transtibial two tunnel techique group(group A) more than one year, average being 23.7 months and 21 cases of modified tibial inlay technique group(group B) more than 12 months, average being 14.7 months. The clinical results were evaluated by the OAK knee scoring system ($M{\ddot{u}}ller$'s criteria) and the posteror stress roentgenography (push view) with Telos stress device compared with the uninjured knees. The arthroscopic second-look findings were also evaluated. In group A : The $M{\ddot{u}}ller$'s knee score was average 80.1 points, the posteror displacement in push view was average 4.4mm at the last follow up. There were 17 cases(44%) of unfavorable results which showed unstable posterior displacement more than 4mm compared with the uninjured knee in push view. Among the 19 cases of arthroscopic second look examinations, nearly normal PCL appearances of the grafted tendons were noted only in 9 cases(47%). In group B : The $M{\ddot{u}}ller$'s knee score was average 86.7 points, the posterior displacemnet in push view was average 3.6mm at the last follow up. There were 5 cases(23.8%) of unfavorable results which showed unstable posterior displacement more than 4mm compared with the uninjured knee in push view but 4 out of 5 cases showed 6mm posterior displacement in push views. Among the 7 cases of arthroscopic second-look examinations, 6 cases(86%) showed nearly normal PCL appearances of the grafted tendons. In modified tibial inlay technique of PCL reconstruction, it was easier to pull out the BPTB and in cases of remained laxed meniscofemoral ligament it was easier to preserve the remained structures than transtibial two tunnel technique. We expect the "modified tibial inlay technique" may solve the problem of grafted patellar tendon abrasion at the posterior orifice of tibial tunnel and may contribute to the successful PCL reconstruction.

• Clinics in Shoulder and Elbow
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• 제19권1호
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• pp.25-32
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• 2016

Background: The goal of this study was to evaluate whether a modified fluoroscopic technique for positioning a hook plate affected the clinical results of treating Neer type II distal clavicle fractures and Rockwood type V acromioclavicular (AC) joint separations with this device. Methods: The study was a retrospective consecutive case series with data analysis. Sixty-four patients with a Neer type II distal clavicle fracture or a Rockwood type V AC joint injury treated between March 2009 and June 2013 were divided into 2 groups: traditional fluoroscopic technique (traditional view, 31 patients) or modified fluoroscopic technique ('hook' view, 33 patients). A visual analogue scale (VAS) score, the modified University of California-Los Angeles (UCLA) shoulder scale score, and radiographic osteolysis were the main outcome measures. Results: The traditional group included a significantly larger number of patients with acromial osteolysis than the hook view group: 23 patients (74.2%) vs. 11 patients (33.3%), respectively (p=0.01). Before plate removal, the hook group reported less pain and higher UCLA shoulder scale scores than the traditional group: average VAS score, 1.55 vs. 2.26, respectively; average UCLA score, 30.88 vs. 27.06, respectively. However, there was no significant difference after plate removal. Conclusions: The hook view allows more accurate bending of the hook plate around the contour of the acromion, resulting in decreased osteolysis, decreased pain, and better function with the plate in situ.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제4권6호
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• pp.1222-1236
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• 2010

In this paper, we propose an improved distributed multi-view video coding method that is robust to illumination changes among different views. The use of view dependency is not effective for multi-view video because each view has different intrinsic and extrinsic camera parameters. In this paper, a modified distributed multi-view coding method is presented that applies illumination compensation when generating side information. The proposed encoder codes DC values of discrete cosine transform (DCT) coefficients separately by entropy coding. The proposed decoder can generate more accurate side information by using the transmitted DC coefficients to compensate for illumination changes. Furthermore, AC coefficients are coded with conventional entropy or channel coders depending on the frequency band. We found that the proposed algorithm is about 0.1~0.5 dB better than conventional algorithms.