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요통환자에 있어서 방사통과 영상의학검사 소견상의 연관성 분석
김한겸,김석,반효정,윤현석,염선규,홍순성,Kim, Han-Kyum,Kim, Seok,Bahn, Hyo-Jung,Yoon, Hyun-seok,Yeom, Sun-kyu,Hong, Soon-Sung 척추신경추나의학회 2009 척추신경추나의학회지 Vol.4 No.1
Objectives : We studied in order to compare the differences between the symptoms of patients and findings of MRI and X-Ray of patients with herniated disc which has been diagnosed often recently. Methods : We randomly selected among the 301 patients with X-Ray and L-spine MRI films who have visited Jaseng Hospital with low-back pain and lumbar and low extremity pain from Jan.1st of 2009 to Jan.28. We used SPSS 13.0 for Windows I in analyzing statistical data of study results and the level of significance were below 0.05. Results and Conclusions : 1. If there were radiating pain, based on MRI findings, the amount of herniation was more severe(P>0.05). 2. If the finding of a X-ray showed narrowing, based on MRI findings, the amount of herniation was more severe(P>0.05). 3. There were no significant differences between the presence of radiating pain and the findings of X-Ray(P>0.05). 4. Among the 301 cases, cases which showed findings beside HIVD were 79. 7 cases of hemanggioma(2.3%), 24 cases of spinal neoplasm(cord cyst, tumor etc)(8%), 7 cases of spondylitis(2.3%), 16 cases of spinal canal stenosis(5,3%) 9 cases of ligamentum flavum thickening(3%) and 16 cases of facet syndrome(5.3%).
척추전방전위증과 Tuffier's line 높이와의 상관관계
김한겸,홍순성,염선규,진은석,정해찬,Kim, Han-Kyum,Hong, Soon-Sung,Yom, Sun-Kyu,Jin, Eun-Seok,Jung, Hae-Chan 척추신경추나의학회 2008 척추신경추나의학회지 Vol.3 No.2
Objectives : One of the most important cause of spondylolisthesis is it's epidemiological structure and L5's stability takes a significant role. The purpose of this study is to assess the difference of the Tuffier's line among of Spondylolythesis patients. Methods : We analyzed the Anterior view of lumbar spine checked at erect position on 60 patients who had been diagnosed as spondylolythesis. We investigated the Tuffier's Line on X-ray film. Results and Conclusions : Age distribution was 15 to 66 and the average was 47.81. Men were 19 cases(31.6%) and women were 41 cases(68.4%). Compared to men, women were more exposed to spondylolisthesis and for the age distribution, 50's showed the biggest portion. Group of normal people showed proportion of 14.3% at L4, 44% at L4/5 and 41.7% at L5 each. And group of patients showed proportion of 48.4% at L4, 35% at L4/5 and 51.6% at L5 each. Comparing these results, significance probability was 0.004(<0.05) which was significant. As the results of comparing the relation between L4/5 and L5/S1 patients, Normal group showed average of 3.33 which were close to L4/5. When there are spondylolisthesis at L4/5, averege was 3.33, placed at lower part of the vertebra body. When there are spondylolisthesis at L5/S1, averege was 3.566, placed between lower part of the veterbra body of L4 and L4/5. The p value of Normal group and L4/5 spondylolisthesis patient group was 0.022(p<0.05) which was significant. But the p value of Normal group and L5/S1 spondylolisthesis patient group was 0.0239 which was not significant. Also p value of L4/5 spcndylolisthesis patient group and L5/S1 spondylolisthesis patient group was 0.721 which was also not significant.
김한겸 ( Han-kyum Kim ),안유림 ( Yoo-lim Ahn ),윤성호 ( Seong-ho Yoon ),이영재 ( Young-jae Lee ),이영흥 ( Young-heung Lee ),이원준 ( Weon-june Lee ),김현민 ( Hyun-min Kim ),김영옥 ( Young-ok Kim ) 한국정보처리학회 2021 한국정보처리학회 학술대회논문집 Vol.28 No.2
범죄차량 판독 시스템, 지능화된 CCTV 등 차량과 관련된 시각지능에 관한 연구가 큰 관심을 받고 있다. 이 중 차량 분류 기술은, 특정 차량을 인식하는 핵심기술이다. 이와 관련한 기존 연구들은 큰 차종으로만 분류하거나, 분류 가능한 차종의 수, 정확도 등이 낮아 실용성 및 신뢰성이 떨어진다는 단점이 있다. 따라서, 본 논문에서는 차종을 정확하게 분류할 수 있는 2단계 차종 분류 알고리즘을 제안한다. 제안 시스템은 CNN으로 학습된 모델을 기반으로 1차로 차량의 유형을 분류하고, 2차로 정확한 차종을 분류한다. 실험 결과, 52개의 차종을 분류함에 있어 단일 분류 모델에 비해 5.3%p 더 높은 90.2%의 분류 정확도를 보였다. 이를 통해, 더욱 정확한 차종 분류가 가능하다.
김한겸 ( Han-kyum Kim ),강덕현 ( Duck-hyun Gang ),이수형 ( Su-hyung Lee ),이주환 ( Ju-hwan Lee ),황현빈 ( Hyun-bin Hwang ),이정현 ( Jung-hyun Lee ),박진호 ( Jin-ho Park ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.1
최근 실내의 미아사고가 증가하고 있으며, 그 외에 실외에서의 미아 발생 건수 또한 해마다 증가하고 있는 추세이다. 이러한 추세를 보아, 어린 아이들의 안전을 보장 해줄 수 있는 시스템의 존재가 시급하다는 것을 알 수 있다. 이에 본 논문에서는 미아 사고 방지를 위한 모니터링 시스템을 제시한다.
요추 추간판 탈출증 환자의 보존적 치료결과와 흡연의 상관성에 대한 임상적 고찰
반효정(Hyo-Jung Bahn),김석(Seok Kim),윤현석(Hyun-Seok Yoon),김한겸(Han-Kyum Kim),김선민(Sun-Min Kim),김지용(Jee-Yong Kim),김태헌(Tae-Hun Kim),박병윤(Byoung-Yoon Park) 척추신경추나의학회 2010 척추신경추나의학회지 Vol.5 No.2
Objectives : To investigate the association between cigarette smoking and clinical outcomes of conservative treatment for lumbar herniated disc. Methods : We reviewed 74 male patients with lumbar herniated disc who were hospitalized at the Jaseng Oriental Medicine Hospital. 74 patients were divided into 2 groups(smokers, non-smokers) and we measured age, ODI score, SF-36 score, VAS. Results : Between smokers and non-smokers, statically significant differences were found in clinical symptoms on the time of 6 months later, effective scores of treatments, value of ODI and value of VAS on the time of 6 months later. And in these values of measurements, non-smokers were higher than those of smokers. Conclusion : These results suggest that possibility of the association between cigarette smoking and clinical outcomes of conservative treatment for lumbar herniated disc.
정해찬,김한겸,김석,한창,Jeong, Hae-Chan,Kim, Han-Kyum,Kim, Seok,Han, Chang 척추신경추나의학회 2010 척추신경추나의학회지 Vol.5 No.1
Objectives: To investigate the change of the cervical spine curvature after whiplash injury. Methods: Clinical study carried out in 46 patients who already had neck pain and took a cervical lateral X-Ray in Jaseng Oriental hospital. these patients had whiplash injury whitin one year. We followed up the cervical lateral X-Ray after that. Cervical spine curvature was measured using four measuring method. Type of cervical spine curvature was analyzed by Jochumsen method, Ishihara Index. T-test was used. Results: By Jackson's Angle and Cobb's angle, it is tend to be more Iordotic curvature after whiplash injury. In Jochumsen method, Ishihara Index the cervical spine curvature was significantly increased their Iordotic angle(P<0.05). Conclusion: The results suggest that after whiplash injury, patients cervical curvature change more Iordortic curve.
혈소판 유래 성장인자가 임플란트 주위 골형성에 미치는 효과에 대한 실험적 연구
류재준,권종진,김한겸,Ryu, Jae-Jun,Kwon, Jong-Jin,Kim, Han-Kyum 대한치과보철학회 1998 대한치과보철학회지 Vol.36 No.6
Bony fixation of implants during the early phase of healing is important in order to get secondary stability of the implant assuring the success of the treatment. Because the successful placement of the implant is limited by the quality and quantity of bone, other agents which stimulate bone formation in the peri-implant spaces has been illustrated. Platelet-derived growth factor (PDGF) has been shown to regulate DNA and protein synthesis in bone cells in vitro and to interact synergistically to enhance soft tissue wound healing in vivo. The purpose of this study was to evaluate bone promotion around implants which were augmented with sagittal split osteotomy or autogenous veneer bone graft using the platelet derived growth factor(PDGF). After placement of newly designed twenty four screw-type implants, which were 12mm in length and 4mm in diameter in 6 dogs. $4{\mu}g$ of PDGF B/B was applied with surgicel carriers. The dogs were sacrificed at 3 days, 1, 2, 3, 6, and 12 weeks after implantation. Specimens were examined clinically, radiographically, histologically, and histomorphometrically. The results were as follows: 1. Clinically and radiologically, there was no significant difference in bone formation and healing pattern between experimental and control group. 2. In autogenous veneer bone graft group, bone formation was observed at 1st week in the experimental groups but 2nd week in the control groups. At 3rd week, the expeimental groups showed more bone formation comparing to the control groups. 3. In sagittal split osteotomy group, bone formation was observed at 1st week in both groups. But the experimental groups showed more bone formation comparing to the control groups after 2nd week. 4. The bone growth rate of experimental group was more rapid than that of control group. These results indicated that PDGF did not affect the initiation of new bone formation, but it accelerated the bone formation at the early period.
단일 국소방사선 조사 후 백서 대뇌 피질의 초급성기 변화에 대한 연구
강신혁,정용구,김한겸,김철용,이훈갑,Kang, Shin-Hyuk,Chung, Yong-Gu,Kim, Han-Kyum,Kim, Chul-Yong,Lee, Hoon-Kap 대한신경외과학회 2005 Journal of Korean neurosurgical society Vol.37 No.5
Objective: We investigated the morphologic changes within 24 hours after a single ${\gamma}$-irradiation in the rat brain. Methods: Forty Sprague-Dawley rats were used. After a burr hole trephination on right parietal area, cerebral hemisphere was irradiated with 2Gy and 5Gy using iridium-192($^{192}Ir$), respectively. The effect was assessed at 4, 8, 12 and 24 hours after irradiation. The histological changes were scored following the detection of edema or disarray severity. TUNEL-positive cells exhibiting apoptotic morphology were counted in irradiated region. Results: Cortical edema and disarray were initially showed at 4 or 8 hour and almost all defined at 24 hour after irradiation. And the injury was wedge shape. TUNEL-positive cells were minimal at 8 hour after irradiation as the number of positive cells were $2.6{\pm}5.27$(n=5) after 2Gy, and $0.8{\pm}0.84$(n=5) after 5Gy. But, the number of apoptotic cells were increased markedly to $60{\pm}6.24$ at 12 hour after 2Gy and to $104{\pm}19.7$ at 24 hour after 5Gy. Conclusion: There were prominent morphologic changes immediately after ${\gamma}$-irradiation. And, apoptosis was increased according to the time period. These findings implicate that brain irradiation induces rapid apoptotic change, which may play an important role in the pathogenesis of radiation-induced pathologic conditions.
CNN-LSTM 기반 유해 텍스트 필터링 크롬 플러그인
황현빈 ( Hyun-bin Hwang ),김한겸 ( Han-kyum Kim ),정진우 ( Jinwoo Chung ),정혁순 ( Hyuk-soon Chung ),서충원 ( Choong-won Seo ),이수원 ( Soowon Lee ) 한국정보처리학회 2021 한국정보처리학회 학술대회논문집 Vol.28 No.1
최근 온라인 매체에서 무분별한 비속어나 욕설 사용이 늘어남에 따라 유해한 텍스트를 자동으로 필터링하는 시스템의 필요성이 증가하고 있다. 유해 텍스트 필터링 관련 기존의 접근방법은 채팅 프로그램 등 특정 프로그램에 한하여 적용이 되거나 특정 포탈의 웹페이지에 국한되어 적용이 되는 한계가 있다. 따라서 본 연구에서는 AI를 활용하여 모든 웹 페이지의 유해 텍스트를 필터링할 수 있는 Chrome Extension을 구현하고 그 유효성을 검증한다.
추나요법과 침치료를 이용한 특발성 척추측만증의 보존적 치료 치험 2례
염선규,진은석,정해찬,김한겸,이진혁,Yeom, Sun-Kyu,Jin, Eun-Seok,Jeong, Hae-Chan,Kim, Han-Kyum,Lee, Jin-Hyuk 척추신경추나의학회 2010 척추신경추나의학회지 Vol.5 No.2
Objectives : The propose of this study is to compare X-ray Cobb각 and clinical symptoms. Methods : Clinical datas were compared Cobb각 with X-ray Full spine A.P. and lateral view. Results : After treatment, One case, the L-spine Cobb각 correctability was 93.76%, the other case, the C-T spine Cobb각 correctability was 37.49%, the T-L spine Cobb각 correctability was 85.83%. Conclusions : The result suggest that chuna and acupuncture therapy was effective treatment on patients with idiopathic scoliosis. Also we experienced improvement of symptoms to this patient.