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습성 나이관련황반변성에서 안축장이 초기 항혈관내피성장인자 치료 후 재발에 미치는 영향
조수연,이윤곤,한상윤,태기선,김종우,김철구,이동원,김재휘 대한안과학회 2019 대한안과학회지 Vol.60 No.1
Purpose: To evaluate the influence of axial length on the recurrence of wet age-related macular degeneration (AMD) after anti- vascular endothelial growth factor therapy. Methods: A retrospective review of the medical records for 45 eyes of 45 patients, who were diagnosed with neovascular AMD and treated with three ranibizumab injections per month, was performed. Axial length was compared between eyes with (recurrence group) and without (no recurrence group) recurrence of fluid during a 12-month follow-up period. In eyes with recurrence, the association between axial length and the time between the third injection and the first recurrence was also evaluated. Results: The axial length was measured at a mean of 20.6 ± 10.1 months after the diagnosis of neovascular AMD. The mean axial length at that time was 23.33 ± 0.90 mm. The mean axial length was 23.29 ± 0.96 mm in the recurrence group (n = 30) and 23.40 ± 0.79 mm in the no-recurrence group (n = 15). There was no difference in the axial length between the two groups (p = 0.709). In the recurrence group, the period between the third injection and the first recurrence was not associated with axial length (p =0.582). Conclusions: There was no significant difference in axial length between eyes with and without recurrence after initial treatment for wet AMD. In addition, the time to first recurrence was not significantly associated with axial length. Because the present study was retrospective and the sample size was small, further prospective studies with a better design are needed to more accurately assess the influence of axial length. 목적: 안축장이 습성 나이관련황반변성에서 항혈관내피성장인자 치료 후 재발에 미치는 영향에 대해 알아보고자 한다. 대상과 방법: 습성 나이관련황반변성으로 진단된 후 1개월 간격 ranibizumab 3회 주입술을 시행받은 45안을 대상으로 후향적 의무기록 분석을 시행하였다. 12개월의 경과 관찰기간 동안 재발을 보인 군을 ‘재발한 군’, 재발하지 않은 경우를 ‘재발하지 않은 군’으로 나누어 양 군 간에 안축장을 비교하였다. 재발한 군의 경우 안축장과 첫 재발까지의 기간 사이의 연관관계를 추가로 분석하였다. 결과: 습성 나이관련황반변성 진단 후 평균 20.6 ± 10.1개월에 안축장을 측정하였으며, 평균 안축장은 23.33 ± 0.90 mm였다. 재발한 군(n=30)과 재발하지 않은 군(n=15)을 비교하였을 때, 평균 안축장은 재발한 군에서의 23.29 ± 0.96 mm, 재발하지 않은 군에서 23.40 ± 0.79 mm로 양 군 사이에 유의한 차이는 없었다(p=0.709). 재발한 군에서 3회 주사로부터 첫 재발까지의 기간은 평균 6.3 ± 2.3개월이었으며, 상기 기간과 안축장 사이의 연관관계는 유의하지 않았다(p=0.582). 결론: 본 연구의 결과 습성 나이관련황반변성에 대한 초기 치료 후 재발한 군과 그렇지 않은 군 사이에 안축장의 유의한 차이는 없었으며, 재발까지의 기간 역시 안축장과 연관관계가 나타나지 않았다. 그러나 본 연구가 소수의 안을 대상으로 한 후향적 연구라는 점을 고려하였을 때, 향후 보다 잘 설계된 전향적 연구를 통해 안축장의 영향을 보다 더 정확하게 평가하고자 하는 시도가 필요할 것이다.
수동조절형 제트환기장치(Manujet)의 개발 및 임상적용 : 전향적 연구
권기남,김규훈,문일하,이유재,유혜진,태기연,이승원,Kwon, Ki-Nam,Kim, Kyu-Hun,Moon, Il-Ha,Lee, Yu-Jea,Yu, Hye-Jin,Tae, Ki-Yeon,Lee, Seung-Woon 대한후두음성언어의학회 2011 대한후두음성언어의학회지 Vol.22 No.2
Background and Objectives : Previous jet ventilation is not becoming more common because of high price, making loud noise, and causing a movement of the vocal cords due to the jet stream. So we designed a new type of manually controlled jet ventilation using previous laryngoscope and introduced it's clinical application. Materials and Method : A prospective study involved 20 patients all having undergone surgical intervention under new type of manually controlled jet ventilation from June 2009 to January 2011. The prospective study was to assess the vital sign and operative and postoperative complications. Results : The Manually Controlled Jet Ventilation were performed in 20 patients. 50% of the patients have Post-located laryngeal lesion, 20% with tracheal stenosis, 20% with glottic cancer biopsy and laser cordectomy, 10% with postglottic stenosis. Conclusion : Manually Controlled Jet Ventilation (Manujet) can be used for airway surgery.
두경부암 진단의 새로운 내시경 진단방법 협대역 영상 (Narrow Band Imaging, NBI)의 유용성-전향적 연구
박재홍(Jae Hong Park),김재욱(Jae Wook Kim),이용만(Yong Man Lee),유혜진(Hye Jin Yoo),태기연(Kee Yeun Tae),오천환(Cheon Whan Oh),장혁순(Hyuck Soon Chang),이승원(Seung Won Lee) 대한두경부종양학회 2011 대한두경부 종양학회지 Vol.27 No.2
Background and Objectives:Narrow Band Imaging(NBI) is a novel optical technique that enhances the vi-sualization of superficial microvascular architecture which is commonly increased and founded as an irregular shape in a neoplastic lesion. The aim of this study is the evaluation of the usefulness of NBI in the diagnosis of Head and Neck Cancer. Subjects and Methods:From December 2009 to January 2011, 31 consecutive patients who were diagnosed with head and neck malignancy were enrolled in this prospective study. The malignant find-ings of NBI were demarcated brownish lesion or increased intraepithelial papillary capillary loops(IPCLs) with or without irregularity. Results:There were 29 cases(93.5%) of well demarcated brownish lesion, 26 cases(83.9%) of increased IPCLs and 4 cases(12.9%) of satellite lesions. Diagnostic accuracy of endoscopic examination was increased from 83.9% to 93.5%, when NBI was applied to the conventional endoscopy(p>0.05). Conclusion: NBI is a powerful and safe screening test, which can be performed in out patient clinic without any supplemen-tary procedure.
도시 철도의 정밀 정차 제어에 있어서의 ATO 프로파일의 선택
이태연(Lee Taeyeon),김용민(Kim Yongmin),박준영(Park Junyoung),박재홍(Park Jaehong),한성호(Han Seoungho),박현준(Park Hyunjune),안태기(An Taeki),온정근(Ohn Jungghun),백종현(Baek Jonghyun) 한국철도학회 1999 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper is mainly concerned with the development of the ATO(Automatic Train Operation) profile on precision stop controller. The ATO system is used for automatic or driverless operation of a train. In this paper, the algorithm for ATO controller is presented and three speed profiles on precision stop controller are compared. One profile is based on the maximum jerk control, another on the constant control input, and the third on the optimal control for the minimum energy consumption. These profiles are simulated and analyzed in view of the stop time, control input, jerk, propulsion and braking.