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장유진 ( Eu Gene Chang ),이소명 ( So Myung Lee ),조혜연 ( Hye Yeon Cho ),박서연 ( Seo Yeon Park ),김은경 ( Eun Kyoung Kim ),강우대 ( Woo Dae Kang ),김종운 ( Jong Woon Kim ),김석모 ( Seok Mo Kim ),최호선 ( Ho Sun Choi ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.9
Objective: The aim of this study was to evaluate the clinical effectiveness and safety of vaginal myomectomy via colpotomy with analyzing clinical course and postoperative complication. Methods: A retrospective study was performed in 59 patients, who underwent vaginal myomectomy between November 1997 and July 2006 in department of gynecology, Chonnam National University Hospital. Operating time, hemoglobin change, postoperative pain, perioperative complication, and days of hospital stay were recorded. Results: Fifty-nine patients were evaluated, mean age of patients was 41.54±5.8 years. Mean diameter of the uterine myoma was 6.79±1.75 cm. Mean operating time was 66.69±34.49 minute. Mean hemoglobin loss was 2.67±1.26 g/dL, and mean days of hospital stay was 4.91±1.25 days. One patient had febrile morbidity. Only one patient had suffered from retroperitoneal bleeding enough to get on operation. Conclusion: Vaginal myomectomy seems to be a feasible and safe surgical procedure. Further randomised studies are needed to compare this procedure with laparotomy and laparoscopy, and vaginal myomectomy is expected to be more effective and generalized surgical procedure.
자궁강 내 병변의 진단에서 식염수 주입 초음파 자궁조영술과 자궁경 검사의 비교 연구
이소명 ( So Myung Lee ),장유진 ( Eu Gene Chang ),박수영 ( Soo Young Park ),정광필 ( Kwang Pil Jeong ),조문경 ( Moon Kyoung Cho ),오성택 ( Sung Tack Oh ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.4
Objective: To compare the diagnostic accuracy and acceptability of saline infusion sonohysterography (SIS), and hysteroscopy for detecting intracavitary abnormalities in women with abnormal uterine bleeding. Methods: Seventy-eight patients with abnormal uterine bleeding were selected from the Department of Obstetrics and Gynecology in Chonnam University Hospital. The findings at SIS were compared with the hysteroscopic and histologic findings. The agreement of diagnosis between SIS and hysteroscopy was calculated. Sensitivity, specificity, positive predictive value, and negative predictive value were calculated. Results: SIS had a sensitivity of 84% and a specificity of 85% for a diagnosis of endometrial polyp. Hysteroscopy had a sensitivity of 86% and a specificity of 96% for diagnosis of endometrial polyp. SIS had a sensitivity of 75% and a specificity of 86% for a diagnosis of submucosal myoma. Hysteroscopy had a sensitivity of 100% and a specificity 99% for a diagnosis of submucosal myoma. SIS had a sensitivity of 91% and a specificity of 96% for a diagnosis of submucosal myoma. Hysteroscopy had a sensitivity of 100% and a specificity 91% for a diagnosis of endometrial hyperplasia. Conclusions: The diagnostic accuracy of SIS was significant to that of hysteroscopy in diagnosing intracavitary abnormalities, Moreover, SIS in a safe, convenient, cost effective, easily accessible and acceptable investigative modality.
Sunset Yellow 액정 색소를 이용한 광학적 이방성 필름 제조
신승한 ( Seung Han Shin ),김병철 ( Byung Chul Kim ),장유진 ( Eu Gene Chang ) 한국공업화학회 2011 공업화학 Vol.22 No.1
자기 조립성 염료인 Sunset Yellow-FCF 수용액은 상온에서 농도 25wt%부터 schlieren 구조의 액정상을 보이기 시작하여, 28wt% 이상이면 완전한 네마틱 액정상으로 관찰되었다. 전단배향에 의한 코팅으로 광학적 이방성 필름을 제조하기 위해서는 30wt% 이상의 농도가 필요하였다. 액정 색소의 농도, 코팅속도, 건조 온도, 상대습도 등 코팅 변수가 최종 박막필름의 두께, 투과도에 미치는 영향 분석에 의하면, 최종 필름의 두께에는 용액의 농도가 가장 큰 영향을 주었으며, 평행방향의 투과도에는 건조 온도와 농도의 영향이 가장 컸다. 특히 Sunset Yellow-FCF의 농도 증가로 전단코팅에 의한 배향성이 개선되고 높은 편광도를 갖는 필름제조가 가능하였다. 본 실험에서는 33wt%의 Sunset Yellow-FCF 수용액을 사용하면, 89.7~98.7%의 편광도를 갖는 광학적 이방성 필름이 제조되었다. The aqueous solution of Sunset Yellow-FCF (SY-FCF) began to show schlieren texture at room temperature when its concentration reaches 25 wt%. A further increase of the concentration of SY-FCF to 28wt% resulted in a perfect nematic liquid crystal phase. However, more than 30wt% of SY-FCF in aqueous solution was required to make an optically anisotropic film simply by shear coating. In our study, concentration of SY-FCF solution, coating speed, drying temperature, and relative humidity were considered as coating parameters affecting the preparation of optically anisotropic thin films. From analysis of variance analysis (ANOVA), the solution concentration was revealed as a main factor affecting the film thickness. The drying temperature and solution concentration were main factors affecting the transmittance of parallel direction (To). Especially, SY-FCF aqueous solution with high concentration induced a better alignment of LC columns and produced highly oriented anisotropic films. In this study, optically anisotropic films prepared by 33wt% of SY-FCF in aqueous solution showed 89.7~ 98.7% of degree of polarization.