소아의 서혜부 탈장에 관한 임상적 고찰

서정민,정풍만,Seo, Jeong-Meen,Jung, Poong-Man 대한소아외과학회 1995 소아외과 Vol.1 No.1

The clinical experience of 2,340 inguinal hernia repaired by one pediatric surgeon on 2,079 children at Hanyang University Hospital from September 1979 to December 1993 was analyzed. Of 2,046 patients who had primary hernia repairs at Hanyang University Hospital, 1,636 were male and 410 female, and 55.5% of hernias occurred on the right side, 36.0% on the left, and 8.6% were bilateral. The patients presented hernia under the age of 12 months were 45.3% and those performed herniotomy under the age of 12 months were 25.5%. Birth weight was less than 2.5kg in 111 patients(8.7%) of 1,279 data available patients. Ninety(6.6%) of 1,354 data available patients were premature(<37wks gestation). The proportions of bilateral inguinal hernia and the onset age under 12 months of life in low birth weight babies and premature babies were higher than in full-term babies. Incarcerated inguinal hernia occurred in 327 patients(16.0%) of whom 8 patients were strangulated hernias. The occurrence of incarceration inversely related with age of patients. The subsequent contralateral inguinal hernia following unilateral hernia repairs occurred in 80 patients(4.3%) among which 72 were male and 8 were female. The incidence of contralateral inguinal hernia was more frequent in boys(4.8%) than girls (2.2%) and in cases after left herniotomy(6.4%) than after right herniotomy(2.9%). Sixty percent of contralateral inguinal hernia developed within 1 year after primary hernia repair. The recurrence of inguinal hernia occurred in 6 patients(0.27%) treated at our hospital primarily. There were one or more associated congenital anomalies in 83 patients of which congenital heart diseases were the most common. Sliding hernia occurred in 25 patients consisted of 5 boys and 20 girls. Family history was noted in 35 patients and there were 28 sets of monozygotic and 3 sets of dizygotic twins.

수술 후 관리

서정민,Seo, Jeong-Meen 대한소아외과학회 2003 소아외과 Vol.9 No.2

첨단과학도들이 '꿈'을 갖는 세상을···

서정민,Seo, Jeong-Min 한국과학기술단체총연합회 2004 과학과 기술 Vol.37 No.12

소아 최소침습 수술

서정민,Seo, Jeong-Meen 대한소아외과학회 2011 소아외과 Vol.17 No.2

2007년 낙농 사료업계 현황 및 2008년 전망

서정민,Seo, Jeong-Min 한국낙농육우협회 2007 낙농·육우 Vol.27 No.12

아토피 피부염의 중증도 평가방법에 대한 제언 ; 비교 분석 및 소아 환자의 평가방법에 대한 설립

서정민,김상찬,황순이,황보민,지선영,이상곤,백정한,Seo, Jung-Min,Kim, Sang-Chan,Hwang, Sun-Yi,Hwang, Bo-Min,Jee, Seon Young,Lee, Sang-Gon,Baek, Jung-Han 대한한방소아과학회 2006 대한한방소아과학회지 Vol.20 No.1

Objective : As prevalence of atopic dermatitis(AD) rises and medicine of atopic dematitis develops, the methods of measurement for atopic dermatitis have developed. Therefore, we aimed to establish a new sconring system in oriental medicine for a childhood atopic dematitis, by comparison, analysis of various sconing systems. Method : We searched for the data related to severity sconing systems of atopic dermatitis in Entrez PubMed on abroad thesis and KISS(Korenstdued Information Service System) on domestic thesis from 1990 to 2005. Result : Severity sconing systems for atopic dermatitis satisfy validity, reliability, sensitivity of change and verification of this. The essential items of severity sconing systems are extent, intensity and subjective symptoms. The lesion is divided into 9 areas(head and neck, upper limbs, elbow, hands, trunk, hip and inguinal, lower limbs, knee, feet). The items of intensity are erythema, oedema and induration and papulation, oozing and weeping and erosion, excorition, scaling, lichenification. The subjective symptom is pruritis, evaluated according to sleep loss and obstruction of play and study. The extent and intensity is evaluated in combination. We suggested that extent and intensity occupied for 70% and subject symptoms accounted for 30% of total score.

Couch의 좌표 확인을 이용한 치료 위치 이동의 정확성 평가

서정민,정천영,박영환,송기원,Seo Jeong-min,Jeong Cheon-young,Park Young-hwan,Song Ki-won 대한방사선치료학회 2003 大韓放射線治療技術學會誌 Vol.15 No.1

I. 목적 방사선 치료에서 인접한 두 target을 가진 두경부 환자의 target간의 이동시, 육안으로 판별하여 수동으로 couch를 이동하는 방식에서 나타날 수 있는 오차를 확인하기 위하여, couch의 좌표값을 분석하고 target간의 이동에 대한 재현성의 정확성을 평가하고자 한다. II. 대상 및 방법 방사선 치료에 있어서 치료하고자 하는 인접한 두 target간의 이동시 operator에 의한 수동이동에서 나타날 수 있는 이동오차를 확인하기 위하여, couch의 좌표값(vertical, longitudinal, lateral 세 방향)을 이용, 수동으로 위치잡이시 이동거리에 대한 정확도를 평가하기 위해 치료장비( CL 2100C, Varian, USA) 의 console monitor에 나타난 좌표값을 기록하였다. 매 치료마다 vertical, longitudinal, lateral 세 방향에서 기록된 좌표의 이동거리를 구한 후에, 이를 RTP(Pinnacle, ADAC, USA)에 의한 target간의 거리와 비교하여 오차값을 구하였다. 동일환자를 10회에 걸쳐 실제 set-up시의 좌표이동의 평균값과 오차정도, 그리고 표준편차를 구하였다. III. 결과 환자의 skin mark를 육안으로 확인하며 수동으로 couch를 이동하는 방식에서 두 target간 이동의 평균 표준편차가 각 방향에서 vertical 1.4mm, longitudinal 0.9mm, lateral 2.2mm로 나타났고, 직선상의 이동오차는 평균 약 3.6mm, 최대 5.1mm의 오차가 나타났다. Lateral 방향에서 오차정도가 가장 커서 최대 5mm까지 오차가 발생하였으며, 각 방향에서 오차평균값은 vertical 1mm, longitudinal 0.7mm, lateral 2.7mm이고 이중에서 가장 오차가 큰 lateral방향의 오차평균값을 크게 넘어서는 경우는 전체의 $30\%$정도로 나타났다. IV. 결론 Couch를 수동으로 이동하여 target간을 이동시, 평균 약 3.6mm정도의 오차가 발생하였다. 3D conformal therapy나 IMRT처럼 높은 정밀도를 요구하는 치료의 경우에는 인접한 target간의 정확한 이동을 요구하므로, couch의 실제 좌표의 오차를 확인하는 일이 중요하다. 따라서 couch의 좌표확인을 이용한 치료의 재현성과 정확성 평가를 더욱 발전시켜 응용한다면 양질의 방사선 치료를 실시할 수 있을 것이라 사료된다. I. Purpose Confirming an error to be able to break out in a method to move couch manually while operator sees the skin marks on patient in case of curing head who got 2 targets adjoined, so we analyze coordinates price of couch, evaluate reproducibility and precision of change movements between targets. II. Materials and Methods In radiotherapy, for confirming errors in manual movements by operators by exchanging between two targets to treat patient head, we read coordinates price(vertical, longitudinal, lateral three directions of couch) shown on a monitor of LINAC( CL 2100, Varian, USA) in order to evaluate accuracy about the length that moved in time for moving couch manually. After reading movement length of coordinates recorded in three directions of all treatment, we compared distance between targets recorded in RTP(Pinnacle, ADAC, USA) with reading coordinates price of couch, setting actually done the same patient for ten times, coordinates were recorded, treated for evaluating averages and degrees of errors and standard deviations. III. Results In method to confirm skin marks of patient by operators' view and to move couch manually, average standard deviations of movements between two targets are vertical 1.4mm, longitudinal 0.9mm, lateral 2.2mm in each direction. As for the error in straight dimension, it is about 3.6mm averages and 5.1mm maximum. The average of errors in each directions was vertical 1mm, longitudinal 0.7mm, lateral 2.7mm. The greatest error broke out in lateral direction with $25\%$ of all cases ; to exceed an error average. IV. Conclusions If operators moved manually couch for changing target points, errors about 3.6mm average degrees occur. It is important that operators confirm the errors prices of actual couch coordinates for asking a correct movement between the targets adjoined each other ; in case of treatment demanding high precision like 3D conformal therapy or IMRT. Therefore, if we apply couch coordinates confirmation to reproducibility and to precision evaluation of treatment, it's expected that we can execute high-quality radiotherapy.

특집:에너지플랜트 및 핵심기자재 기술 - 플랜트용 가스터빈 기술

서정민,박준영,최범석,Seo, Jeong-Min,Park, Jun-Yeong,Choe, Beom-Seok 재료연구소 2012 機械와 材料 Vol.24 No.1

국내 플랜트산업의 낮은 외화가득률의 원인인 낮은 국산화율의 플랜트 기자재 중 하나인 가스터빈은 선진국대비 기술격차가 크고 해외의존도가 높다. 가스터빈은 플랜트 산업에 활용도가 높은 기자재며 특히 오일&가스 플랜트의 경우 upstream에서 downstream에 이르기까지 활용도가 매우 높다. 가스터빈 시장은 연 7.5%의 성장을 보이고 있으며 2015년에는 560억불에 달할 것으로 예상된다. 선진국에서는 ATS, NGST, ETN 등 범국가 단위로 가스터빈 기술을 개발해 왔으며, 최근에는 고효율, 저비용, 친환경 가스터빈 기술향상에 집중하고 있다. 가스터빈 기술은 이제 발전기를 지나 성숙기에 이르고 있지만 국내의 가스터빈 기술은 단위 부품 제작이나 면허 생산 등의 생산 기술에 치우친 초보적인 수준에 머물고 있다.

신생아의 항문직장내압검사

서정민,최윤미,이은희,전용훈,안승익,홍기천,신석환,Seo, Jeong-Meen,Choi, Yun-Mee,Lee, Eun-Hee,Jun, Yong-Hoon,Ahn, Seung-Ik,Hong, Kee-Chun,Shin, Seok-Hwan 대한소아외과학회 1999 소아외과 Vol.5 No.2

To estimate the normal anal canal pressure in neonates, anal manometry was performed in 46 normal babies less than 6 days of age. Twenty-eight of the subjects were boys and 18 girls. All the subjects passed meconium within 24 hours after birth. Birth weights were above 2.4 kg. There were no sexual differences in birth weight, birth height, gestational age, postnatal age, or Apgar score (p<0.05). The mean manometry values were; anal sphincter length $18.6{\pm}3.9$ mm, high pressure zone (HPZ) $9.2{\pm}3.6$ mm, vector volume $2027.2{\pm}2440.7$ mmHg2cm, maximum pressure $42.3{\pm}17.4$ mmHg, and position of the maximum pressure $6.0{\pm}22.4$ mm. Only the HPZ of boys was longer than those of girls (p=0.005). In squeezing state, HPZ and the position of maximun pressure were not changed from resting state. HPZ, vector volume, and maximum pressure in boys were higher than those in girls. As the birth weight increased, the anal sphincter length (p=0.001) and the HPZ increased (p=0.047). The resting pressures of the anal canal were evaluated in three portions; /23 upper portion, $12.8{\pm}8.6$ mmHg, middle portion, $20.3{\pm}10.8$ mmHg, and lower portion, $26.1{\pm}12.9$ mmHg. These normal values may serve as guidelines for the evaluation, diagnosis and treatment of neonatal anal diseases.

소아의 사상체질별 신체 특성의 차이에 관한 연구 -Zema21을 통한 체질분석 및 체성분검사와의 상관관계를 중심으로-

서정민,이유진,윤혜진,강미선,백정한,Seo, Jung-Min,Lee, Yu-Jin,Yun, Hye-Jin,Kang, Mi-Sun,Baek, Jung-Han 대한한방소아과학회 2009 대한한방소아과학회지 Vol.23 No.1

Objectives The purpose of this research is to find out the relationship between Zema 21 and in body based on the Sasang Constitutional difference of children. Methods We collected 1050 children from 5 years old to 15 years old who had been tested for both Zema21 and Inbody in OO oriental hospital from the period of September 1, January 1999 to August 31, 2008. This research investigated the Constitutional differences based on the relationship between Zema21 and Inbody. Results 1. It turned out that the children's height does not have a significant relationship between their age and gender. 2. Generally, Taeumin's weights were significantly high than those of Soyangin's and Soumin's in certain ages in children over 9 years old and in all genders. 3. The percentage of the body fat in Taeumin were significantly high than Soyangin and Soumin in certain ages in children over 10 years old and in all genders. 4. Waist-Hip ratio in Taeumin were significantly high than Soyangin and Soumin in male over 10 years old and in female over 13 years old of children. On the other hand, there was no relationship to the Soyangin and Soumin. 5. The obesity degree in Taeumin were significantly high in all female and male who were over 10 years old. Soyangin were the next highest group and Soumin follows. 6. Body Mass Index in Taeumin were significantly high in all genders who were over 10 years old. The second is Soyangin, and the lowest groupis Soumin. 7. The Basal Metabolic Rate resulted as significant in all age, although this does not have any relationship between age and gender. 8. Abdomen out in Taeumin were significantly high in ages over 10 and genders. The second is Soyangin and the lowest is Soumin. 9. Hip circumference Abdomen out in Taeumin were significantly high in ages over 10 and genders. Specially, Taeumin shows highest value, then the second is Soyangin, and the lowest is Soumin who were over 12 years old. Conclusions The results of Inbody were not significant to the children who were under 9 years old. Taeumin became significantly fat after over 10 years old. The results of Body Composition except height and Basal Metabolic Rate(MBR) were the highest in Taeumin, and Soyangin and Soumin were the second, and the third respectively.