척추 전방 전위증 환자의 자기공명 영상 소견에서 보이는 추체종판의 변화

안재성,이준규,황득수,이원석 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.2

We reviewed the 156 magnetic resonance of lumbar spine with spondylolisthesis in simple X-ray and analysed relationship of the type of spondylolisthesis with bone marrow change in lumbar MRI and low back pain, instability of lumbar spine and prognosis. The patients with no bone marrow change were excluded in our study. Bone marrow changes were classified into 3 types by Moddic methods. Type I is low signal in T1 image and high signal in T2 image, type Ⅱ is high signal in T1 image and isodense or slight increased signal in T2 and type 2Ⅲ is decreased signal in both T1 and T2 image. Displacement over 3㎜ in motion view is defined as instability. Pain was scored by JOA scoring system. 22(14.1%) of 156 patients had local bone marrow change of vertebral end-plate. Of 22 patients, levels of lesion were 28 levels. 14 levels were isthmic type, 6 levels were degenerative type and 8 levels were retrolisthesis, respectively. Isthmic type had type Ⅰ or Ⅲ In 8(57.1%) levels, instability in 7(50.0%) levels and significant pain(0 of 1 point) in 9(69.2%) patients. Degenerative or retrolisthesis had type Ⅱ in 10(71.4%) levels, instability in 1(7.1%) level and significant pain in 4(44.4%) patients. Unstable and more symptomatic type of spondylolisthesis was associated with type Ⅰ or Ⅲ change of bone marrow in MRIm and may be teated more aggressively. Type Ⅰ or Ⅲ of bone marrow change is associated with segmental instability and low back pain and has a poor prognosis, but type Ⅱ are present in more stable and chronic disease. We concluded that isthmic type was more associated with pain, instability and type Ⅰor Ⅲ change, while degenerative or retrolisthesis type were more stable and painful and associated with type Ⅱ change.

사마귀양 암종 3예

안성구,박경득,김수찬,이승헌 연세대학교 원주의과대학 1991 원주의대논문집 Vol.4 No.1

고속가공 시스템의 정밀도 평가방법에 관한 연구

손덕수,이안호,이정길,이우영 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

KS and ISO have proposed several evaluation methods of conventional machine tools. Even though the accuracy of the tools can be evaluated with those methods, there are still no proper evaluation methodsofhigh speed machining. Because it is hard to evaluate characteristics of high speed machining such as decrease of cutting temperature, cutting force, and reduced machining time. Therefore, new evaluation method for high speed machine should be developed. In this paper, several shapes of model have been proposed to evaluate cutting accuracy of high speed machine.

족관절의 방사선적 탐구

황득수,진영안 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2

It is generally agreed the best clinical results in treatment of injuries of the ankle are obtaind by anatomical restoration of the joint. For objective measurements of tibiotalar joint, some investigators used different criteria and defined the specific reference points under variable angle of internal rotation Ant- Post. Projection. But, occasionally we didn't acquire the accurate roentgenographic finding that was suggested by investigators. so, we check the varible angle of internal rotation film in addition to angle suggestion by investigators and compare the criteria between them. 1. There was no significant difference to measure the accuracy of medial clear space in according to variable rotation angle. 2. The overlapping distance of tibiofibula syndesmosis decreased by increasing internal rotation angle, but was not under 1mm(ie, index of injury) 3. To measure the weber's 3 criteria, we need to check the variable internal rotation ankle, if necessary. 4. We acquired the normal range of measurement about Tile's 2 criteria by variable internal rotation angle.

고관절 비구순 파열의 관절경적 치료 : 2~7년 추시 결과 2 to 7 Year Follow Up

황득수,김영모,김경천,안성환 대한고관절학회 2004 Hip and Pelvis Vol.16 No.1

이동호스트를 위한 적응성 멀티캐스트 알고리즘

홍영표,안광수,백덕화 진주여자전문대학 2001 論文集 Vol.24 No.-

To Provide multicast service for mobile hosts must deal with dynamic member location and its group membership in mobile networks. There are two old approaches as hi -directional tunneling and remote subscription for mobile multicast. The deployment of existing multicast protocols(home agent-based multicast, Bidirectional packet tunneling) is very inefficiently to use network resources such as duplicate copies of multicast datagrams, tunnel convergence, and unicast by long delivery path. The remote subscription scheme may be very expensive because muticast packet delivering is delayed and discontinued frequently by rebuilding a multicast tree to serve multicast when the host move highly. In this paper, we analyse these problems of multicast routing protocols and propose an efficient multicast protocol using cost function to consider the host mobility in wireless mobile networks, By cost function, a mobile host make a decision to receive a tunneled multicast datagram from home agent or to receive a rebuild path from foreign agent. The performance of the proposed protocol was evaluated by simulation under various environments and we got an improved performance.

간경변증과 간세포암 환자에서 원인에 따른 Child-Pugh 점수, PGA 지수와 MELD 점수간의 상관관계

문병식,안혁수,안득수,이승옥 대한간학회 2003 Clinical and Molecular Hepatology(대한간학회지) Vol.9 No.2

서론: 간경증변의 정도를 정량적으로 측정하는 것은 여러 면에서 매우 중요하며, 이의 척도로 Child-Pugh 점수를 가장 보편적으로 이용되고 있고, 또 다른 척도로서 PGA 지수와 MELD 점수가 이용되고 있다. 이에 저자들은 간경변 환자와 이에 동반된 간세포암 환자에서 각각 알콜에 의한 경우와 바이러스성 간염에 의한 경우로 나누고, 각각에서의 Child-Pugh 점수, PGA 지수와 MELD 점수를 측정하고, 이들 척도간의 상관 관계와 각각의 원인에 따른 척도간의 차이를 비교 분석하였다. 대상과 방법: 2000년 3월부터 2002년 7월까지 알코올과 B형 간염바이러스에 의한 간경변증 또는 간세포암으로 진단된 339명의 환자에 대해 챠트를 분석하여, 간경변증과 이에 병발된 간세포암으로 진단된 경우로 구분하고 각 원인에 따라 네가지군으로 분류하였다: 알코올에 의한 간경변증 환자군: LC-Al, B형 간염 바이러스에 의한 간경변증 환자군: LC-B, 알코올에 의한 간경변증에 병발된 간세포암 환자군: HCC-Al,B형 간염 바이러스에 의한 간경변증에 병발된 간세포암 환자군: HCC-B. 각 네군 환자의 Child-Pugh 점수, PGA 지수와 MELD 점수를 측정하여 이를 비교 분석하였다. 결과: 총 399명 중 간경변으로만 진단된 환자는 201명 (LC-Al: 100명, LC-B: 101명)이었고, 간경변을 동반한 간세포암으로 진단된 환자는 138명 (HCC-Al: 31명, HCC-B: 107명)이었다. Child-Pugh 점수, PGA 지수 및 MELD 점수의 평균값은 각 군간의 통계학적인 차이가 없었다. 모든 환자군에서의 Child-Pugh 점수와 PGA 지수간의 상관관계는 정비례 관계를 보였으며(LC-Al 0.602, LC-B 0.770, HCC-Al 0.435, HCC-B 0.502), Child-Pugh 점수와 MELD 점수간의 상관 관계는 또한 정비례 관계이었다(0.548, 0.794, 0.708, 0.670). PGA 지수와 MELD 점수간의 상관 관계는 HCC-Al 군을 제외한(0.236) 다른 세 군에서 정비례 관계를 보였다(0.419, 0.622, 0.348). 질환별 상관 관계는 간세포암이 병발된 환자군보다 간경변증만 있는 환자군에서 상관계수 값이 더 높은 경향을 보였고, 원인별 상관 관계는 알코올에 의한 환자군보다 B형 간염 바이러스에 의한 경우에 상관계수 값이 더 높은 경향을 보였다. 결론: 간경변증 환자와 간세포암 환자에서 Child-Pugh 점수, PGA 지수와 MELD 점수간의 상관 관계는 정비례하였다. 간경변증만 있는 환자에서 간세포암 환자에 비해 각지수간의 상관계수 값이 높은 경향을 보였고, 원인이 B형 간염 바이러스인 경우에 알코올인 경우 보다 상관계수 값이 높은 경향을 보였다. Background/Aims: to determine the treatment modalities and the prognosis of a patient with liver cirrhosis, quantitative estimation of liver function is important. We assessed the Child-Pugh score (CPS), the common method as a severity index for the cirrhosis, the Promthombin, Υ-GT, and Apolipoprotein Al (PGA) index and model for end-stage liver disease(MELD) score. The purpose of this study was to evaluate the correlation between these indices in the patients with cirrhosis only and hepatocellular carcinoma (PHC), according to underlying causes (HBV and alcohol). Methods: We reviewed medical records of 339 cirrhotic patients with/without hepatocellular carcinoma and divided patient groups by disease and underlying cause: cirrhosis caused by alcohol; LC-Al, hepatocellular carcinoma with cirrhosis caused by HBV; HCC-B. We assessed the CPS, PGA index and MELD score and calculated the correlation coefficient between these scores. Results: Among the total of 399 patients, 201 patients were diagnosed on the liver cirrhosis only, and 138 patients on the hepatocellular carcinoma with cirrhosis. In each groups, mean score values were not significantly different in CPS, PGA index and MELD score. The correlation of CPS, PGA index and MELD score in all groups, except for the correlation of PGA index and MELD score in HCC-Al group, was significantly positive (p<0.05). Compared to correlation coefficients between three indices, the patients with cirrhosis only had higher tendencies than the patients with hepatocellular carcinoma. The patients by HBV had higher tendencies than by alcohol. Conclusions: The correlations between CPS, PGA index and MELD score showed significantly positive correlations in the patients with liver cirrhosis only and hepatocellular carcinoma with cirrhosis (except in HCC-Al group). The patients with cirrhosis only had higher correlation coefficients than the patients with PHC and patients by HBV had higher than by alcohol.

Impaired Interleukin-2 Receptor Expression on Lymphocytes from Patients with Chronic Active Hepatitis Type B

Deuk Soo Ahn,Hyun Cheol Jang,Joong Ki Ahn,Chang Yeol Yim,Dae Ghon Kim 대한내과학회 1989 The Korean Journal of Internal Medicine Vol.4 No.1

Clinical Studies on Sulbactam/Ampicillin in Internal Medicine

Ahn, Deuk Soo,Kim, Dae Ghon,Kim, Jin Hong,Ahn, Kwan Yong 의과학연구소 1987 全北醫大論文集 Vol.11 No.3

Sulbactam(sodium penicillinate sulfone, CP 45, 899)은 beta-lactamase inhibitor로서 그 자체는 항균 작용을 거의 갖지 않으나 ampicillin과 병합 투여 했을 때 ampicillin의 항균범위를 신장시킨다. 즉 이 병합 요법은 ampicillin 내성 staphylococcus aureus, Haemophilus influenza, anaerobic bacteria, Escherichia coli등의 많은 다른 균주들에 효과가 있다고 한다. 1985년 3월에서 1986년 8월까지 전북의대 부속병원 내과 입원 환자 25명을 대상으로 sulbactam/ampicillin 병합 요법을 고찰하였다. 처음부터 이 병합 요법을 실시하였거나 또는 다른 항생제가 무효하다고 판정된 경우에만 투여하였으며 환자군의 분류는 폐염 9예, 신우신염 7예, 세균성 이질 2예였다. 임상적 고찰 및 반응에 근거한 이 병합 요법의 효과는 96%였으며 분리균주의 약제 감수성은 77%를 보였다. Sulbactam/ampicillin 병합 치료 중 혈액검사, 간기능검사, 혈청화학검사 등의 이상 소견은 발견되지 않았으며 따라서 이 병합 요법은 중증 감염증인 폐염, 장열, 신우신염 및 세균성 이질 등의 치료에 우수한 효과가 있음을 알 수 있었다. (Key words : sulbactam, ampicillin, 병합요법)

원저 : 담즙정대성 황달의 분탁

안득수(Deuk Soo Ahn),양형식(Hyung Sik Yang),김대곤(Dae Gon Kim),이상철(Sang Chul Lee),이경(Kyung Lee) 전북대학교 의과학연구소 1981 全北醫大論文集 Vol.5 No.1