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3-D CT를 이용한 악교정술 전후의 하악과 설골의 위치에 관한 연구
이상한(Sang-Han Lee),남정훈(Jeong-Hun Nam),정창욱(Chang-Wook Jung),권대근(Tae-Geon Kwon) 대한구강악안면외과학회 2003 대한구강악안면외과학회지 Vol.29 No.3
Purpose : This study was intended to evaluate the positional relationship between the hyoid bone and the mandible in patients with mandibular protrusion after mandibular set-back surgery by means of 3D-CT. Materials and methods : Preoperative(3 weeks before) and postoperative (6 weeks after) 3D-CT & cephalogram were taken on 32 patients(12 male, 20 female, mean age of 23.2) treated by bilateral sagittal split osteotomy with rigid fixation. The angular measurement on 3D-CT basilar view were deviation of Me & H, long axis angle of left & right cornu majus. The lineal measurement on 3D-CT basilar view were composed of intercondylar line and coordinates(x,y) of Me & H. The angular & lineal measurement of lateral cephalogram were composed of mandibular plane angle, SNA, SNB, ANB, FH-NA & FH-NB, and coordinates(x,y) of B, Pog, Me & H, PAS, Lpw, MPH and IAS. On the frontal cephalogram, deviation of Me were evaluated. Results : The mean mandibular set-back was 8.0mm horizontally and mandibular plane angle was slightly increased. The hyoid bone was displaced postero-inferiorly, the distance between MP(mandibular plane) and H(hyoid bone) was increased and the posterior airway space values (PAS, Lpw, IAS) were decreased. The coordinates Me(x,y), H(x,y) and deviation angle Me’& H’were revealed the strong positive correlation. Conclusion : The results revealed that the horizontal, vertical and transverse relationship of the mandibular and the hyoid bone movements were significantly correlated in patients performed mandibular set-back surgery.
본 교실에서 시행한 악교정 수술 증례에 관한 임상적 연구
이상한(Sang-Han Lee),박인숙(In-Sook Park),이창환(Chang-Hwan Lee),권대근(Tae-Geon Kwon),Yun Man,Deng Fangchen 대한구강악안면외과학회 2005 대한구강악안면외과학회지 Vol.31 No.3
We observed 469 cases (male 217 cases, female 252 cases) with dento-facial deformity for 10 years from Jan 1994 to Dec 2003. The ratio of male to female was 1:1.2 and the mean age was 23.3 years (male 24.0 years, female 22.6 years) ranged from 11 to 43 years.1) The most dominant group was related to mandibular prognathism (80.4%). A rate of 83.8% demonstrated mandibular protrusion according to Slavicek’s classification (n=160), and 85.4% were classified as skeletal Class III type according to Sugawara’s classification (n=151) Surgical method were divided into 355 cases of one jaw surgery (single method), 26 cases of one jaw surgery (combined method), and 77 cases of two jaw surgery. Sagittal split osteotomy were performed on 316 cases (69.0%). The average operation time and blood loss in SSRO were 4.1 ± 2.2 hrs. and 138.8 ± 222.6 ml (n=152)
골반골절 환자의 골절위치와 출혈량간의 상관관계 분석을 통한 대량수혈 필요에 대한 간단한 예측도구 개발: 골반골 출혈 지수
이상식 ( Sang Sik Lee ),배병관 ( Byung Kwan Bae ),한상균 ( Sang Kyoon Han ),박성욱 ( Sung Wook Park ),류지호 ( Ji Ho Ryu ),정진우 ( Jin Woo Jeong ),염석란 ( Seok Ran Yeom ) 대한외상학회 2012 大韓外傷學會誌 Vol.25 No.4
Purpose: Hypovolemic shock is the leading cause of death in multiple trauma patients with pelvic bone fracures. The purpose of this study was to develop a simple prediction method for injury severity and amount of hemorrhage via an analysis of the correlation between the site of pelvic bone fracture and the amount of transfusion and to verify the usefulness of the such a simple scoring system. Methods: We analyzed retrospectively the medical records and radiologic examination of 102 patients who had been diagnosed as having a pelvic bone fracture and who had visited the Emergency Department between January 2007 and December 2011. Fracture sites in the pelvis were confirmed and re-classified anatomically as pubis, ilium or sacrum. A multiple linear regression analysis was performed on the amount of transfusion, and a simplified scoring system was developed. The predictive value of the amount of transfusion for the scoring system as verified by using the receiver operating characteristics (ROC). The area under the curve of the ROC was compared with the injury severity score (ISS). Results: From among the 102 patients, 97 patients (M:F=68:29, mean age=46.7±16.6 years) were enrolled for analysis. The average ISS of the patients was 16.2±7.9, and the average amount of packed RBC transfusion for 24 hr was 3.9±4.6 units. The regression equation resulting from the multiple linear regression analysis was ``packed RBC units=1.40×(sacrum fracture)+1.72×(pubis fracture)+1.67×(ilium fracture)+0.36`` and was found to be suitable (p=0.005). We simplified the regression equation to ``Pelvic Bleeding Score=sacrum+pubis +ilium``. Each fractured site was scored as 0(no fracture) point, 1(right or left) point, or 2(both) points. Sacrum had only 0 or 1 point. The score ranged from 0 to 5. The area under the curve (AUC) of the ROC was 0.718 (95% CI: 0.588-0.848, p=0.009). For an upper Pelvis Bleeding Score of 3 points, the sensitivity of the prediction for a massive transfusion was 71.4%, and the specificity was 69.9%. Conclusion: We developed a simplified scoring system for the anatomical fracture sites in the pelvis to predict the requirement for a transfusion (Pelvis Bleeding Score (PBS)). The PBS, compared with the ISS, is considered a useful predictor of the need for a transfusion during initial management. (J Trauma Inj 2012;25:139-144)
Gene Expression Profiling of Chick Brain Development
Sang In Lee(이상인),Woon Kyu Lee,Ji Hye Shin,Beom Ku Han,Sunjin Moon,Ying Hui Zheng,Heebal Kim,Jae Yong Han 한국가금학회 2007 한국가금학회 정기총회 및 학술발표회 Vol.24 No.-
조류를 포함한 모든 척추동물은 성별에 따른 뇌의 차이점이 뚜렷하게 나타난다. 특히, 배자 발생 단계에서 성 분화는 초기 단계 생식선의 발달과 함께 이루어지며 뇌에 영향을 미친다. 일반적으로 초기 배자 발생 단계에서는 성별이 결정 된 후 발달하고 있는 생식선에서 분비되는 호르몬에 의하여 각각의 성의 특징에 따라 비 생식선 조직에 영향을 미친다고 알려져 있다. 하지만 최근 들어 호르몬에 의한 뇌의성 분화에 대한 학설이 여러 연구 등에 의해 재조명되고 있으며, 호르몬 뿐 아니라 유전적인 기작에 의하여 뇌의 성분화가 이루어 질 수 있다는 연구들이보고 되고 있다. 이에 본 연구에서는, 닭 초기 발생단계 배자에서 성 분화에 대한 유전적 영향성 규명하기 위하여, 생식선 호르몬이 분비되기 전 단계의 배자에서 뇌 조직을 추출하여 유전자 발굴 실험을 진행 하였다. Microarray를 이용한 분석에서 성별에 따라 발현 차이를 보이는 유전자를 확인할 수 있었으며, 분석의 정확성을 위하여 정량 PCR 기법을 이용 발현양상을 검증하였다. 본 연구를 통하여, 뇌에서 성 분화와 관련된 기작은 호르몬 뿐 아니라, 유전적인 영향에 의하여도 이루어질 수 있다는 사실을 확인하였으며, 발굴된 유전자들은 초기 닭 배자의 발달 및 신경 발달에 밀접한 기능을 할 것으로 판단된다.