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구철(Cheol Koo),김미정(Mi Jung Kim),성종호(Jong Ho Sung),안영주(Young Ju Ahn),최성규(Sung Kyu Choi),유종선(Jong Sun Rew),김세종(Sei Jong Kim),윤종만(Chong Mann Yoon) 대한내과학회 1991 대한내과학회지 Vol.41 No.3
To evaluate the colonic transit in patients with irri- table bowel syndrome, the authors measured the colonic transit time with radioopaque markers. The segmental colonic transit time with commercially available radioopaque markers (Sitzmarks) was studied in 28 healthy volunteers and 41 patients with irritable bowel syndrome (19 constipation dominant types and 22 diarrhea dominant types). The subjects ingested capsule (20 radioopaque 0-ring) at 9:00 a.m. on 3 successive days while they were fully ambulatory. A plain radiography of the abdomen was obtained on the 4th day. Using the modified Arhan and Wald method, the colonic transit was assessed. The results were as follows: 1) The total colonic transit was 22.4±4.9 h(Mean SE); segmental transits were 8.7±4.2 h for the right colon, 9.9±4.3 h for the left colon, and 3.9±4.8 h for the rectum in the normal control group. Age and sex did not influence transit significantly, 2) The total colonic transit was 50.8±12.0 h in the constipation group and 2. 5±1.7 h in the diarrhea group, and it was significantly different from that of the nor- mal control group. 3) Comparison between the normal contral group and patients with irritable bowel syndrome revealed that the right colonic transit time ratio significantly decreased in the constipation group, while the left colonic transit time ratio increased in the constipation group and significantly decreased in the diarrhea group, and the rectal transit time ratio significantly increased in the diarrhea group, This study suggests that the left colonic segment may be a major lesion site in irritable bowel syndrome.
구철인,정재헌,최한철,Koo Cheol-In,Chung Chae-Heon,Choe Han-Cheol 대한치과보철학회 2004 대한치과보철학회지 Vol.42 No.2
Statement of problem: Implant screw loosening has been remained problem in restorative practices. Surface treatment of screw plays a role of preventing screw from loosening in implant screw mechanism. Purpose : The purpose of this study was to investigate surface characteristics of TiN and ZrN film ion plated screw with titanium and gold alloy screw and to evaluate wear resistance, surface roughness, and film adhesion on screw surface using various instruments. Material and methods : GoldTite screws and titanium screws provided by 3i (Implant Innovation, USA) and TorqTite screws or titanium screws by Steri-Oss (Nobel Biocare, USA) and gold screws and titanium screws by AVANA (Osstem Implant, korea) were selected. Ion plating which is much superior to other surface modification techniques was carried out for gold screws and titanium screws using Ti and Zr coating materials with nitrogen gas. Ion nitrided surface of each abutment screw was observed with field emission scanning electron microscopy (FE-SEM, micro-diamond scratch tester, vickers hardness tester, and surface roughness tester. Results : 1) The surface of gold screw and GoldTite is more smooth than ones of other kinds of non coated screw. 2) The ZrN and TiN coated surface is the more smooth than ones of other kinds of screw. 3) The hardness of TiN and ZrN coated surface showed higher than that of non coated surface. 4) The TiN coated titanium screw and ZrN coated gold screw have a good wear resistance and adhesion on the surface. 5) The surface of ZrN coated screw showed low surface roughness compared with the surface of TiN coated screw. Conclusion : It is considered that the TiN and ZrN coated screw which would prevent a screw from loosening can be applicable to implant system and confirmed that TiN and ZrN film act as lubricant on surface of screw due to decrease of friction for recycled tightening and loosening.
비심장성 흉통을 가진 환자에서 식도 Scintigraphy 의 의의
조정곤(Jung Kon Cho),구철(Cheol Koo),유종선(Jong Seon Rew),윤종만(Chong Mann Yoon),김지열(Ji Yeoul Kim) 대한내과학회 1989 대한내과학회지 Vol.37 No.5
N/A In order to evaluate the diagnostic value of esophageal scintigraphy in patients with sustained angina like chest pain of noncardiac origin, we performed esophageal scintigraphy in 25 normal subjects and 25 patients with chest pain of noncardiac origin. All the patients who complained of chest pain were studied with exercise ECG and/or coronary angiography to exclude the cardiac origin. Esophageal transit time (ETT) was significantly longer in the patient group (19.4±15.1 sec) than in the control group (7.2±3.9 sce). Cases of abnormal transit time and pattern were 11/25 (44%) in the patient group and 2/25 (8%) in the contn1 group, respectively. Cases of the markedly prolonged transit time more than 40 sec were 8 (32%) in the patient group, but there were none in the control group. Abnormal patterns of esophageal transit were divided into two groups: incoordinate movement (24%) and adynamic movement (20%) of radioisotope. These results suggest that esophageal scintigraphy could be used as a diagnostic modality in angina like chest pain of noncardiac origin.
포스터 전시 : 간 ; 만성 염증성 탈수초성 신경병증 환자에서 스테로이드 치료후 간경병증 발생
양승호 ( Seung Ho Yang ),주임관 ( Im Kwan Jhu ),구철 ( Cheol Koo ),손태용 ( Tae Yong Son ),지황룡 ( Hwang Yong Ji ),신기춘 ( Gi Chun Sin ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
<증례> 24세 남자가 2주 전부터 시작된 사지마비와 이상감각을 주소로 내원하였다. 과거력상 B형 간염 보균자였으나 특이한 증세는 없었다. 내원시 혈압 120/80 mmHg, 맥박 76회/분, 호흡수 20회/분, 체온 36.7℃ 이었다. 의식은 명료하였으나 결막 창백이나 공막 황달은 없었다. 호흡음은 정상이었고 호흡곤란이나 심잡음은 없었다. 복부에서 간장이나 비장은 촉지되지 않았다. 입원 당시 시행한 일반혈액검사에서 백혈구 3,500/㎣, 혈색소 13.
양승호 ( Seung Ho Yang ),주임관 ( Im Kwan Jhu ),지황룡 ( Hwang Yong Ji ),손태용 ( Tae Yong Son ),구철 ( Cheol Koo ) 대한내과학회 2003 대한내과학회지 Vol.64 No.3
We experienced a case of non-Hodgkin`s lymphoma presented only as right side pleural effusion, that is primary effusion lymphoma (PEL), in a 75 year-old male patient in Korea where is the endemic area of tuberculosis, He visited our hospital complaining o
포스터 전시 : 위장관 ; 장결핵과 구별하기 어려운 Crohn병 1례
주임관 ( Im Kwan Jhu ),양승호 ( Seung Ho Yang ),지황룡 ( Hwang Yong Ji ),손태용 ( Tae Yong Son ),구철 ( Cheol Koo ),윤지영 ( Ji Young Yoon ),정종길 ( Jong Gil Jeong ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
<증례> 52세 남자환자가 1주일동안 지속된 우하복부 동통을 주소로 내원하였다. 환자는 8개월 전에도 동일한 증상으로 본원에 내원하여 복강경하 담낭절제술, 충수절제술, 회장말단부 조직검사를 시행하였다. 조직검사에서 만성담낭염이 있었고, 충수돌기는 정상이었다. 회장말단부는 형태가 불분명한 육아종, 염증반응, 그리고 광범위한 섬유화가 보였다. 환자는 추적 관찰하던 중 상태가 좋아져 자의로 추적관찰을 중단하였으며, 증상이 재발하여 내원하였다. 내원당시 신체검