관동맥조영동안 심전도변화와 QT 간격 증가의 임상적 의의

이범우(Bum Woo Lee),성상규(Sang Kyu Sung),이은주(Eun Joo Lee),장대환(Dae Hwan Jang),이홍순(Hong Soon Lee),이학중(Hak Choong Lee) 대한내과학회 1988 대한내과학회지 Vol.34 No.3

N/A We studied the electrocardiographic changes which were induced by injection of radiopaque contrast media during selective coronary angiography in 16 patients with chest pain. Electrocardiograms were obtained before, during and after selective coronary angiography. Electrocardiographic changes were a according to kinds and numbers of diseased coronary vessels. After selective coronary angiography, electrocardiographic finding showed more frequent changes of T wave than those of S-T segment in 12-standard lead. And there was no difference of electrocardiographic changes between normal groups and abnormal groups of coronary angiograhic finding. During coronary angiography, prolongation of Q-T interval was initiated about 4 sec after contrast media was injected into coronary artery and persisted for 8 see nearly. Also Q-T interval was significantly prolonged during coronary angiography when was compared with precoronary angiography (p<0.01). We concluded that changes of T wave were more prominent and prolongation of Q-T interval could be warning sign of ventricular fibrillation.

‘동료교원 교원능력개발평가’에 대한 초등학교 교원의 태도탐구

이범우(Lee Bum Woo),이수정(Lee Soo jeong) 학습자중심교과교육학회 2015 학습자중심교과교육연구 Vol.15 No.3

본 연구는 초등학교 교원들이 교원능력개발평가의 동료교원평가에 참여하면서 그 평가를 어떻게 인식하고 행동하는지 그들의 태도를 탐구하는 데 목적을 두었다. 특히 초등학교 교원의 배경 및 특성별로 동료교원평가에 대한 태도의 차이가 어떻 게 나타나는지에 관심을 두었다. 이를 위해 교원능력개발평가의 연구학교인 수도권 초등학교 교원 중에서 성별, 담당 학급별, 분장 업무별, 교직경력별로 배경이 서로 다른 8명의 교원을 대상으로 집단 면담 방식으로 심층 면담을 실시하였다. 연구 결과, 초등학교 교원들은 교원능력개발평가의 동료교원평가에 대해 다음과 같은 세 가지의 태도를 보이고 있음을 확인할 수 있었다. 첫째, 초등학교 교원들은 교원능력개발평가의 동료교원평가를 마치 중요도가 낮은 행정업무를 처리하는 것과 같이 인식하면서 평가를 수행하고 있었다. 둘째, 초등학교 교원들은 온정적 관점으 로 동료교원평가를 수행하거나 개인적인 친분에 따라 동료평가 점수를 부여하는 등 감정적으로 동료교원평가를 수행하고 있었다. 셋째, 초등학교 교원들은 동료교원평 가를 위해 필요한 정보가 충분하지 않은 상태에서 평가에 참여하고 있었는데, 이 점 에 있어서 교직 경력이 많은 교사들과 적은 교사들 간에 태도의 차이가 있음을 확인 할 수 있었다. 곧, 고 경력 교사들은 저 경력 교사들에 비해, 동료교원평가에 필요한 정보가 불충분한 경우에 있어서도 그들의 경력에 의해 형성된 좋은 안목을 가지고 동료교원평가를 수행함으로써 그다지 큰 어려움이 없다고 느끼고 있었다. The purpose of this study is to explore how Korean elementary school teachers respond to the Peer Evaluation for the Teacher Appraisal for Professional Development, and especially, how their responses are different from each other by their characteristics. A focus-group interview and participative observation were applied for the study, and interviewees were comprised of eight teachers with diverse characteristics such as gender, undertaking class, assignment task, and teaching career, who were working at an elementary school in Korea. The findings showed elementary school teachers attitudes toward the Peer Evaluation for the Teacher Appraisal for Professional Development as followings; First, elementary school teachers treated their peer evaluation as doing their administrative affairs with low importance. Second, they peer evaluated emotionally. For example, they evaluated colleagues with their compassionate perspectives and their peer evaluations were influenced by their personal relationship. Third, their peer evaluations were carried out without enough information about their peers for the Teacher Appraisal for Professional Development .

광섬유 신호 특성 예측을 위한 일반화된 단계분할 유한요소법의 구현

이범우(Bum-Woo Lee),정백호(Baek-Ho Jung),이호준(Ho-Joon Lee) 대한전기학회 2000 대한전기학회 학술대회 논문집 Vol.2000 No.7

각종 간질환에서 Tc - 99m pertechnetate 경직장 문맥신티그라피를 이용한 문맥 순환의 평가

김관우 ( Kwan Woo Kim ),김종순 ( Chong Soon Kim ),김학산 ( Hak San Kim ),박원 ( Won Park ),이범우 ( Bum Woo Lee ),서관식 ( Kwan Sik Suh ),이봉휘 ( Bong Hwi Lee ),김광일 ( Kang Il Kim ) 대한소화기학회 1989 대한소화기학회지 Vol.21 No.4

N/A Portal circultion in patients with various liver diseases was evaluated by Tc-99m pertechnetate per-rectal scintigraphy. 10mCi of pertechnetate was instilled into the upper rectum, and serial scintigrams were taken. Time-activity curves for the liver and heart were recorded sequentially. Through analysis of these curves, the per-rectal portal shunt indices were calculated for 15 norrnal controls, 12 with acute hepatitis (AH), 28 with chronic hepatitis, 51 with liver cirrhosis, 1 with falminant hepatic failure (FHF ). 5 with hepatic congestion (I-IC) due to congestive heart failure (CHF). The results obtained were as follows: 1) 15 normal controls and the patients with acute and chronic hepatitis all had 'Pattern II' scintigrams, and the patients with liver cirrhosis (LC) and hepatic congestion had 'Pattern II' scintigrams. One patient with FHF showed 'Pattern II' scintigram. 2) The shunt index (SI) in the normal controls was l.32±1.30%, in AH 10.9±5.7%, in CPH 5.4±2.3%, in CAH 11.8±4.2%, in LC 72.4±21.6%, in HC 39.9±27.2%, and in one FHF 75.4%. 3) Patients with various liver diseases had the significantly higher SI than the normal controls (p < 0.001). Also, the SI in pts. with liver cirrhosis was significantly higher than that of all the other groups (p < 0.001). 4) The mean SI was significantly higher for chronic liver diseases, that were more severe, increasing in the order of CPH, CAH and liver cirrhosis (p<0.001). Also, pts. With AH and CAH showed the significantly higher SI than pts. With CPH (p<0.001), and there was no significant difference in the SI between pts. With AH and CAH (p>0.05). 5) The mean SI was significantly higher in the cirrhotic pts. With varices, encephalopathy, splenomegaly or ascites than in such patient without them (p<0.005). 6) The mean SI in the cirrhotic pts, was calculated according to the modified Child's classification, of which results were that the SI was increased significantly in the order of Grade A, B and C (p< 0.001). 7) In one patient with LC, SI was much decreased from 39.5% before surgery to 7.1% after surgery. The above results suggest that per-rectal portal scintigraphy can be used to evaluate the portal circulation non-invasively and diagnose the portal hypertension in various liver diseases. Also, it can be used to express the degree of any portal hypertension not only by images but also quantitatively, using shunt index, and it is considered useful for the observation of the course of liver diseases and eva]uation of effectiveness of therapy.

도로포장의 효율적 동상방지층 설계를 위한 현장 계측자료의 데이터베이스(DB) 구축

김낙석,남영국,조규태,이범우,Kim,Nak-Seok,Nam,Young-Kug,Cho,Gyu-Tae,Lee,Bum-Woo 한국방재학회 2011 한국방재학회논문집 Vol.11 No.3

우리나라는 겨울철에 동결된 상태로 있다가 봄에는 해빙되는 계절적 동토지역이다. 이러한 계절적 특성으로 인하여 겨울에서 봄에 이르기까지 도로포장의 동결 융해가 반복되어 도로 파손을 유발 시키고 있다. 동결 융해로 인한 피해를 줄이기 위하여 도로포장 설계 시 노상이 동결하는 것을 방지하기 위한 동상방지층을 별도로 설치를 하고 있으나 실효성 검증 없이 국외 연구 결과에 따른 시방서를 바탕으로 무분별하게 적용되고 있어 국가적으로 예산을 낭비하고 있는 실정이다. 본 연구에서는 동결지수 선도를 따라 선정된 15개 지역의 성토부 2 m 이하, 절토부, 절성경계부 구간에서 계측된 온도 및 함수비 데이터들을 효율적으로 관리하고 모니터링 하기위한 데이터베이스를 구축하고자 하였다. 연구결과 계측자료의 효율적인 저장 및 관리가 가능한 데이터베이스를 구축하여 도로설계 기술자의 손쉬운 계측 자료 검색 및 다운로드가 가능하게 되었다. Korea has seasonal weathers which result in the frosting of soil in winter times, and the thawing of soil in spring. These climate characteristics result in the damaging of pavements, due to the repeated freezing and thawing of road pavements during winter and spring. In order to reduce these pavement damages, anti-frost heave layers are being specially installed, however it is being applied based on foreign researches, and therefore result in the waste of national budget. With this study, a database system was constructed for effective management and monitoring of measured temperatures and function data of 2 meters below the embankment, cut slope, and the cutting-embankment boundary, which are 15 regions picked by the frost index diagram. As the study result, an effective storage and management-purpose database was established for easy data searching and downloading for the pavement design engineers.

간신티그라피에서 Digital Image와 Analogue Image 판독의 비교

고창순(Chang Soon Koh),이명철(Myung Chul Lee),정준기(June Key Chung),문대혁(Dae Hyuk Moon),박석건(Seok Gun Park),이명혜(Myung Hae Lee),이범우(Bum Woo Lee),최윤호(Yoon Ho Choi) 대한핵의학회 1989 핵의학 분자영상 Vol.23 No.2

N/A The authors studied to evaluate the difference of the diagnostic performance between reading from digital image on the video CRT of PACS (Picture Archiving and Communication System) and from analogue image of conventional film mode. We compared interpretative accuracy of above two rcading modes by having two observers read a series of liver scintigrams. Images were read once from film and a second time from video CRT of elementary PACS. The cinncordance rate of interpretation of the two mocles was in the range from 61.0% to 93.2%. The diagnostic accuracies of digital image reading and analogue image reading were 72 9,% and 74.6% respectively in one observer, and 72.9% and 76 3% in another one No significant difference in interpretative accuracy could he found between two modes of reading.

Iodin-131I OIH와 99mTc - MAG3의 약물동력학 및 체내 분포에 관한 비교 연구

고창순(Chang Soon Koh),이명철(Myung Chul Lee),정준기(June Key Chung),조보연(Bo Youn Cho),이동수(Dong Soo Lee),이범우(Bum Woo Lee),정재민(Jae Min Jeong),염미경(Mi Kyoung Yeom),김문혜(Mun Hye Kim),박경호(Kyung Ho Park),송세흠(Sae Heum 대한핵의학회 1990 핵의학 분자영상 Vol.24 No.1

N/A 99mTc-MAG, was synthesized, and biodistribution and blood clearance rate were compared with those of 131I-OIH in mice and rats respective]y. Finally renal image was obtained from a normal male volunteer before and after prescription of probenecid. The results obtained were as follows: 1) The uptalce of Tc-MAG, by kindey was higher than that of 131I-OIH in mice 10 mins after injection (n=6, p<0.05), but slightly lower uptakes were found in all organs (kindney, blood, stomach, mtestinge and liver) 2 hrs after injection. 2) For ' Tc-MAG, t1/2 a=2.4-+0.0 min, t1/2B=44.3+7.4 min, and blood clearance=3.4+0.5ml/min, and for 131I-OIH t1/2=1.8=0.2 min, t1/2=69.1+9.5 min, and blood clearance=1.3+O.l min were found in rats. 3) From the renogram of normal male volunteer, we could find that tmax=130 sec and t1/2=430sec before probenecid prescriptiori, and tmax 150-170sec and t1/2=810-1,170sec after probenecid prescriprion. From these results we concluded that Tc-MAG, can be used instead of 131I-OIH for obtaining renal irnage.

99mTc - HMPAO SPECT를 이용한 정상인 국소뇌혈류의 정량적 분석

고창순(Chang Soon Koh),이명철(Myung Chul Lee),정준기(June Key Chung),문대혁(Dae Hyuk Moon),궁성수(Sung Soo Koong),노재규(Jae Kyu Roh),명호진(Ho Jin Myung),이범우(Bum Woo Lee),이경한(Kyung Han Lee),최윤호(Yoon Ho Choi),윤병우(Byung Wo 대한핵의학회 1989 핵의학 분자영상 Vol.23 No.2

N/A Regional cerebral perfusion was evaluated in 15 normal controls by single photon emission comput- ed tomography using Tc HM-PAO. For quantitative analysis, 13 pairs of hornologous region of interest (ROI) were drawn on three transverse slices matching the vascular territories and cerebral cortices, and normal values of '3 semiqunatitative indices including Right to left ratio (R/L ratio), 'Regional index' (RI), and 'Region to cerebellum ratio (R/cbll ratio) were calculated. Mean values of R/L ratios of homologous regions were ranged frorn 0.985 to 1.023, and mean +- 2 s.d. of ali regions did not exceed 11% of mean. Significant difference of Rls (mean count per voxel of a ROJ/mean count per voxel of total ROls) between regions were found (p<0.001) with highest values in occipital cortex and cerebellum. After attenuation correction, Rls in deep gray, cranial portion of anterior cerebral artery and vascular territories in the 2nd siice increased significantly (p< 0.05 0.001). hut vise versa in other ROIs. Reginn to cerebellum ratios also showed regional difference siinifar to Rls.

뇌혈류 평가용 99mTc - HMPAO 합성 및 분포에 관한 연구

고창순(Chang Soon Koh),이명철(Myung Chul Lee),정준기(June Key Chung),조보연(Bo Youn Cho),이범우(Bum Woo Lee),정재민(Jae Min Jeong),염미경(Mi Kyung Yeom),홍미경(Mee Kyoung Hong),최석례(Seok Rye Choi) 대한핵의학회 1990 핵의학 분자영상 Vol.24 No.2

N/A HMPAO was synthesized by two step reaction. d, 1-HMPAO was separated from the racemic product by fractional recrystalization in ethylacetate, and the chemical structure and purity was confirmed by proton NMR spectroscopy. The synthesized d, 1-HMPAO was labeled with Tc- 99m and studied the biodistribution in mice. From the results we could find that liver uptake of synthesized Tc-99m d, 1-HMPAO was higher than that of Amersham kit, but no conspicuous difference was found in brain and other tissues (blood, lung, stomach, intestine, muscle, spleen and kidney).

관상동맥질환에서 심장풀 스캔의 육안적 평가에 대한 ROC 분석

고창순(Chang Soon Koh),이명철(Myung Chul Lee),정준기(June Key Chung),문대혁(Dae Hyuk Moon),궁성수(Sung Soo Koong),이범우(Bum Woo Lee),최윤호(Yoon Ho Choi),이경한(Kyun Han Lee) 대한핵의학회 1989 핵의학 분자영상 Vol.23 No.2

N/A Visual assessment of regional wall motion abnormality (RWMA) by gated blood pol scan (GBPS) serves as an useful parameter in thc diagnosis, functional evaluation, and follow up in various clinir.al settings, but are still subject to some inherent limitations. On important problem may be the interobserver as well as intraobsever variation that may well be present due to the subjective nature of the interpretations. This study was carried out to determine the reliability and reproducibility of visual assessments made in GBPSs, and to observe the degree to vihich the results would be influenced by observer variation. Fifty two patients with coronary heart disease had resting GBPS and contrast ventriculography v;ithin 4 days appart. Contrast ventriculography showed normal wall motion in 6 patients and the remaining 46 had RWMA in one or more segments. The anterior and left anterolateral views of all 52 GBPSs were analyzed by three independent observers, who selected from 5 scales, their 1nel of confidence that there was RWMA in that segment. Reciever operating characteristic (ROC) curves for each analysis was plotted and the area under the curue (B) was used as a parameter representing each observers perf<nrnance in his interpretations. The findings of contrast ventriculographies were used as the standard for RWMA. The apical and inferoapical segments showed the best Visual assessment of regional wall motion abnormality (RWMA) by gated blood pol scan (GBPS) serves as an useful parameter in thc diagnosis, functional evaluation, and follow up in various clinir.al settings, but are still subject to some inherent limitations. On important problem may be the interobserver as well as intraobsever variation that may well be present due to the subjective nature of the interpretations. This study was carried out to determine the reliability and reproducibility of visual assessments made in GBPSs, and to observe the degree to vihich the results would be influenced by observer variation. Fiftv two patients with coronary heart disease had resting GBPS and contrast ventriculography v;ithin 4 days appart. Contrast ventriculography showed normal wall motion in 6 patients and the remaining 46 had RWMA in one or more segments. The anterior and left anterolateral views of all 52 GBPSs were analyzed by three independent observers, who selected from 5 scales, their level of confidence that there was RWMA in that segment. Reciever operating characteristic (ROC) curves for each analysis was plotted and the area under the curue (&) was used as a parameter representing each observers perf<nrnance in his interpretations. The findings of contrast ventriculographies were used as the standard for RWMA. The apical and inferoapical segments showed the best correlation with contrast ventriculography (0=-0.90-0.94, 0,81-0,94, respectively), and the inferior wall showed the poorest correlation (0=0,70-0.74), The interpretations of the inferior, septal, apical, and posteroinferior, segments showed no differcnce betsveen the observers, but there was significantly better perfor- mance in assessment by observer A compared to that hy B or C for the anterolateral segments (0=0.87, 0.78, 0,76, respectively. p<0,01 for A vs B, p<0,05 for A vs C), as well as when all segments were considred altogether (0=0,88, 0.83, 0.82, respectively. both p<0 05). This was also true for the infero-apical segment between A and C (0=0.09, 0.81, p<0,05). The intraobsener variation, how- ever, did not appear significant, with only the inferior segment for observer B showing any significant difference when observer A and R repeated the analysis 10 days latter. There was no difference in assessing dyskinesia, with ail observers showing a high performance (0=0.98, 0.87, 0.97, respectively). The visual assessment of left ventricular ejection fraction by all three observers correlated well with the calculated value from a semiautomated method (Spearmans r 0.91, 0.83, 0,83. p<0.01, p<0.05, p<0