A Nationwide Epidemiological Study of Testicular Torsion in Korea

이솔민,허정식,백민기,유구한,민경은,이형래,이동기 대한의학회 2014 Journal of Korean medical science Vol.12 No.12

Testicular torsion is a surgical emergency in the field of urology. Knowledge of theepidemiology and pathophysiology is significant to an urologist. However, theepidemiology of testicular torsion in Korea has not been studied. We performed anationwide epidemiological study to improve knowledge of the epidemiology of testiculartorsion. From 2006-2011, the Korean Urologic Association began the patient registryservice. The annual number of patients with testicular torsion from 2006 to 2011 were225, 250, 271, 277, 345, and 210, respectively. The overall incidence of testicular torsionin males was 1.1 per 100,000; However, the incidence in men less than 25 yr old was 2.9per 100,000. Adolescents showed the highest incidence. Total testicular salvage rate was75.7% in this survey. There was no geographic difference of testicular salvage rate. Minimizing the possibility of orchiectomy for testicular torsion is important to improvepublic awareness to expedite presentation and provider education to improve diagnosisand surgery. Minimizing the possibility of orchiectomy for testicular torsion is important to improvepublic awareness to expedite presentation and provider education to improve diagnosisand surgery.

하지 연부조직육종을 위한 방사선치료기술 별 선량평가 연구

이솔민,송성찬,현성은,박흥득,이재기,김영석,김귀언,Lee, SolMin,Song, Seongchan,Hyun, Sung Eun,Park, Heung Deuk,Lee, Jaegi,Kim, Young Suk,Kim, Gwi Eon 대한방사선치료학회 2016 대한방사선치료학회지 Vol.28 No.1

A dosimetric evaluation of volumetric modulated arc therapy, intensity modulated radiation therapy, and three-dimensional conformal radiation therapy for the lower extremity soft tissue sarcoma For the lower extremity soft tissue sarcoma, volumetric modulated arc therapy, intensity modulated radiation therapy, and three-dimensional conformal radiation therapy were evaluated to compare these three treatment planning technique. The mean doses to the planning target volume and the femur were calculated to evaluate target coverage and the risk of bone fracture during radiation therapy. Volumetric modulated arc therapy can reduce the dose to the femur without compromising target coverage and reduce the treatment time compared with intensity modulated radiation therapy. 본원에서 수술 후 방사선치료를 수행한 하지 연부조직육종 환자에 대해 용적세기조절회전치료(VMAT), 세기조절방사선치료(IMRT), 3차원입체조영방사선치료(3D-CRT)의 세 가지 치료계획을 수립하여 치료계획용적(PTV)과 대퇴골에 전달되는 방사선량을 각각 비교하였다. 세 치료계획방법 모두 치료계획용적에 전달되는 방사선량은 큰 차이를 보이지 않았으나 용적세기조절회전치료와 세기조절방사선치료의 경우 3차원입체조영방사선치료보다 대퇴골에 전달되는 방사선량을 줄일 수 있었다. 또한 용적세기조절회전치료의 경우 세기조절방사선치료 보다 치료에 필요한 monitor unit이 적어 치료시간 감소의 효과가 나타났다. 따라서 하지 연부조직육종 방사선치료 시 용적세기조절회전치료의 사용은 효과적인 방사선치료를 수행할 수 있을 것이라 사료된다.

용산 철도시설·환경분석을 통한 역세권 선진화 방안 연구

이솔민(Sol Min Lee),류원진(Won Jin Ryu),박준형(June Hyung Park),황춘자(Choon Ja Hwang),박정수(Jeong Soo Park) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5

현재, 용산구는 서울의 중심부라는 좋은 위치를 차지하고 있음에도 불구하고 지상철도가 동서남북으로 연결되어 있어 제대로 개발이 이루어지지 못하고 지역발전을 저해하고 있다. 서울시는 지난 2007년 용산역 일대를 서울의 부도심으로 만들기 위한 역세권 개발사업을 추진하기도 하였으나, 사업은 백지화되어 지금까지 방치되고 있는 실정이다. 이에 본 논문은 현재 용산철도의 시설·환경 및 문제점을 분석하고, 이를 통해 용산역세권 선진화 및 철도시설 활성화 방안을 제시하는 것을 목적으로 한다. Now, yongsan-gu that ground railway isn’t realized exploitation properly on account of link all direction and impede local development however be in a good position which seoul’s core. Seoul is push ahead with station influence area development works in order to makes yongsan station surroundings to seoul’s a secondary center of the city last 2007, but a big undertaking was flawed until now. Hence, thesis aim at analyze present yongsan railroad’s facility·condition and problem and suggest yongsan station influence area advancement and railway service vitalization way.

A Rare Case of Upper Ureter Rupture: Ureteral Perforation Caused by Urinary Retention

최승권,이솔민,김선찬,김태구,유구한,민경은,이형래 대한비뇨의학회 2012 Investigative and Clinical Urology Vol.53 No.2

Perforation of the ureter is a rare condition that causes a series of problems including retroperitoneal urinoma, urosepsis, abscess formation, infection, and subsequent renal impairment. There are causative factors that induce ureteric rupture, including malignancy, urinary calculi, idiopathic retroperitoneal fibrosis, recent iatrogenic manipulation, external trauma, degenerative kidney conditions, urography with external compression, and spontaneous causes. We report a rare case of ureteric rupture caused by urinary retention. The patient was treated with temporary percutaneous drainage and antibiotics. The present case illustrates that urinary retention can induce not only bladder rupture, but also ureteric rupture. It is thus of paramount importance to effectively manage patients with voiding problems.

균일한 두피 방사선 치료를 위한 bolus 적용 방법: Sutured bolus

서명호,이솔민,김귀언,최진현,박소현,김영석,Seo, Myung Ho,Lee, Sol Min,Kim, Gwi Eon,Choi, Jinhyun,Park, So Hyun,Kim, Young Suk 제주대학교 의과학연구소 2019 The Journal of Medicine and Life Science Vol.16 No.1

Total scalp irradiation is a challenging treatment because of unique concave target volume and difficulty with bolus applying. There are few reports about bolus applying methods to the entire scalp in detail. Application of conventional bolus (wax or superflab) is widely used, and it is considered effective. However, the curvature and irregularity of the scalp can produce significant air gap, resulting in inadequate radiation dose distribution. We describe a new method to applying the bolus to the entire scalp. We sutured 1 cm thickness superflab bolus on the thermoplastic mask using cotton string. This method can reduce the air gap between the bolus and scalp and be reproducible.

Predictive Value of Preoperative Unenhanced Computed Tomography During Ureteroscopic Lithotripsy: A Single Institute’s Experience

김선찬,최승권,이솔민,최태수,이동기,민경은,전승현,이형래,정준영,조진현,유구한 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.11

Purpose: Ureteroscopic stone removal is frequently used to remove ureteral stones. Mucosal edema and bleeding are the two most important obstacles to a successful operation. This study analyzed relationships between unenhanced computed tomography (UECT) findings and ureteroscopic findings to determine whether ureteroscopic results could be predicted preoperatively by using UECT imaging. Materials and Methods: From January 2009 to July 2011, 675 patients were diagnosed with ureteral stones through UECT. Among them, we retrospectively reviewed 92 cases of patients who underwent ureteroscopy (URS). We identified findings such as hydronephrosis, rim sign, periureteral fat stranding, and perinephric fat stranding on the UECT and then categorized these findings into four categories (none, mild, moderate, and severe) according to their severity. We also divided the URS findings of mucosal edema and bleeding into four categories (none, mild, moderate, and severe) and compared these findings with the UECT images. Results: A total of 92 study patients were included in this study: 59 were male and 33 were female patients. According to the location of the stone, 31 cases were classified as upper ureteral stones, 15 were midureteral stones, and 46 were lower ureteral stones. Hydronephrosis identified with UECT was correlated with the mucosal edema severity observed during URS (p=0.004). The rim signs identified with UECT were proportional to the grade of mucosal edema (p=0.010). Conclusions: Hydronephrosis and rim signs observed during UECT can be used as a predictive factor for intraoperative mucosal edema in patients undergoing URS.

Volumetric modulated arc therapy for carotid sparing in the management of early glottic cancer

김영석,이재기,박종인,성원모,이솔민,김귀언 대한방사선종양학회 2016 Radiation Oncology Journal Vol.34 No.1

Purpose: Radiotherapy of the neck is known to cause carotid artery stenosis. We compared the carotid artery dose received between volumetric modulated arc therapy (VMAT) and conventional fixed-field intensity-modulated radiotherapy (IMRT) plans in patients with early glottic cancer. Materials and Methods: Twenty-one early glottic cancer patients who previously underwent definitive radiotherapy were selected for this study. For each patient, double arc VMAT, 8-field IMRT, 3-dimensional conformal radiotherapy (3DCRT), and lateral parallel-opposed photon field radiotherapy (LPRT) plans were created. The 3DCRT plan was generated using lateral parallel-opposed photon fields plus an anterior photon field. VMAT and IMRT treatment plan optimization was performed under standardized conditions to obtain adequate target volume coverage and spare the carotid artery. Dose-volume specifications for the VMAT, IMRT, 3DCRT, and LPRT plans were calculated with radiotherapy planning system. Monitor units (MUs) and delivery time were measured to evaluate treatment efficiency. Results: Target volume coverage and homogeneity results were comparable between VMAT and IMRT; however, VMAT was superior to IMRT for carotid artery dose sparing. The mean dose to the carotid arteries in double arc VMAT was reduced by 6.8% compared to fixed-field IMRT (p < 0.001). The MUs for VMAT and IMRT were not significantly different (p = 0.089). VMAT allowed an approximately two-fold reduction in treatment delivery time in comparison to IMRT (3 to 5 minutes vs. 5 to 10 minutes). Conclusion: VMAT resulted in a lower carotid artery dose compared to conventional fixed-field IMRT, and maintained good target coverage in patients with early glottic cancer.

서울9호선 철도경영 및 운영전략에 관한 연구

류원진(Won Jin Ryu),이솔민(Sol Min Lee),윤성철(Sung Chul Yoon),박정수(Jeong Soo Park) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.10

1974년 서울 지하철 1호선의 개통으로 대한민국 수도권 전철의 역사가 시작되었고 현재까지 눈부신 성장을 하였다. 또한 수도권 전철은 도시철도의 장점을 바탕으로 중전철, 경전철, 자기부상열차에 이르기까지 다양한 도시철도 시스템의 형태로 총 20개 노선이 운영되고 있다. 그 중 서울 지하철 9호선은 한강을 따라 서울 주요 지역을 연결하는 도시철도로서 민간 자본으로 운영되고 있으며 하루 평균 약 50만 명에 이르는 인원을 수송하고 있으나 수용능력을 초과하는 승객수요로 인해 혼잡도 해결에 대한 많은 논의가 이루어지고 있다. 이에 본 논문은 서울 9호선과 타 운영기관의 운영현황 및 특징과 성과를 분석하고 차별화된 고객 서비스 프로그램, 안전성과 등을 조사함으로써 운영전략을 집중적으로 비교분석 하고자 한다. Since 1974, Korean subway history around Seoul is started by opening Seoul subway line number 1 and railroad system has been dilapidated pretty huge and upgraded. And also, by using a strong point of city railroad, combined subway company is operating about 20 subway lines using various city railroad systems including heavy subway, light subway, and magnetic aviation subway. Among the many subway lines, subway line number 9 is connecting capital locations in Seoul through Han-river; it is operated by private resources and affords about 5 hundred thousand people per day. However, because of exceeding number of people than its capacity, there are many discussions to solve that problem. Therefore, this study is trying to compare and analyze operating strategies by analyzing characteristics, results, and current circumstances, and also conducting a research about distinguished customer service program, safety, and etc.

중국철도의 분석을 통한 한국철도의 발전방향 연구

이현하(Hyeon Ha Lee),이솔민(Sol Min Lee),박정수(Jeong Soo Park) 한국철도학회 2015 한국철도학회 학술발표대회논문집 Vol.2015 No.5