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실험적 성대마비 개에서 자가이개연골의 성대근육내 주입 후 조직학적 변화 : 2년 후 결과
이병주,이진춘,전경명,고의경,노환중,이창훈,왕수건,Lee Byung-Joo,Lee Jin-Choon,Chon Kyong-Myong,Goh Eui-Kyung,Roh Hwan-Jung,Lee Chang-Hun,Wang Soo-Geun 대한후두음성언어의학회 2005 대한후두음성언어의학회지 Vol.16 No.2
Background and Objective : Vocal fold augmentation by injectable material under direct visual control is an easy and simple operation. However, when autologous fat or bovine collagen is used, the resoiption creates a problem. And autologous fascia is debating about absorption now days. We previously reported on the one year results of injected autologous auricular cartilage for volumetric augmentation in paralyzed canine vocal cord. This study evaluates the long-term histomorphologic results of injected autologous auricular cartilage for the augmentation of the paralyzed canine vocal fold at two year. Material and Methods . A prospective trial of autologous cartilage augmentation of vocal cord in animal model. Three dogs were operated upon. A piece of auricular cartilage was harvested from the ear and minced into tiny chips with a scalpel. Fat was harvested from inguinal area and minced with a scalpel. The minced cartilage and fat-paste (0.2ml) was injected using a pressure syringe into the paralyzed thyroarytenoid muscle using direct laryngoscopy. Three animals were sacrificed at 2 years. Each subject underwent laryngectomy and serial coronal sections of paraffin blocks from the posterior vocal fold were made. Results There was no significant complication perioperatively and during follow-up. The injected cartilage which appeared to have lost viability existed in the vocalis muscles until 24 months. Fibrotic change was exhibited in the surrounding injected cartilage. Conclusion : The autologous auricular cartilage graft is well tolerated and may be very effective material for volumetric augmentation on paralyzed vocal cord.
이병주,강현수,Lee, Byeong-Ju,Kang, Hyun-Soo 한국정보통신학회 2014 한국정보통신학회논문지 Vol.18 No.3
본 논문에서는 비전기반 물체의 폭 측정과 그 응용을 위해 광절단법을 이용한 측정방법에 대해 제안한다. 측정 대상은 트레드이며 자동차 타이어의 가장 바깥쪽 면을 의미한다. 전체 시스템은 두 개의 과정으로 구성되는데 교정과정과 검출과정으로 구성된다. 교정과정에서는 카메라 평면과 레이저 평면간의 변환 관계를 규명하고 왜곡 파라미터를 추출한다. 이때 정교하게 제작된 테스트패턴인 지그가 필요하다. 검출과정에서는 레이저가 비추는 영역을 추출하기 위해 배경영역의 화소 분포에 따라 적응식 임계방법을 적용한다. 다음으로 검출된 영역에 세선화 알고리즘을 적용하여 트레드의 숄더와 끝을 검출한다. 최종적으로 숄더와 전체 폭은 호모그래피와 왜곡계수를 이용하여 폭을 계산한다. This paper presents a vision based object width measurement method and its application where the light sectioning method is employed. The target object for measurement is a tread, which is the most outside component of an automobile tire. The entire system applying the measurement method consists of two processes, i.e. a calibration process and a detection process. The calibration process is to identify the relationships between a camera plane and a laser plane, and to estimate a camera lens distortion parameters. As the process requires a test pattern, namely a jig, which is elaborately manufactured. In the detection process, first of all, the region that a laser light illuminates is extracted by applying an adaptive thresholding technique where the distribution of the pixel brightness is considered to decide the optimal threshold. Then, a thinning algorithm is applied to the region so that the ends and the shoulders of a tread are detected. Finally, the tread width and the shoulder width are computed using the homography and the distortion coefficients obtained by the calibration process.
중추신경계 손상환자의 운전자 재활에 대한 인식과 필요성 연구
이병주,신화경,이관섭,Lee, Byung-Joo,Shin, Hwa-Kyung,Lee, Kwan-Sub 대한물리치료학회 2013 대한물리치료학회지 Vol.25 No.5
Purpose: For patients with CNS injury who are restricted in the use of public transportation, car driving means more than simple movements and is essential for their independent lives, such as participation in society and returning to jobs. Therefore, in order to enhance the quality of life of disabled persons, their high perception and necessity of driving rehabilitation are required. The purpose of this study is to determine the perception and necessity of driver rehabilitation in patients with CNS injury. Methods: In order to survey the perception of patients with CNS injury and necessity of driving rehabilitation, questionnaires were distributed to patients with CNS injury. Questionnaires were composed of demographic characteristics, disability related characteristics, and driver's license related characteristics. Results: Our results showed that the number of driving participants with a driver's license for the disabled was significantly higher than that for non- driving participants with a previous general driver's license in the perception of driving rehabilitation. Conclusion: We suggest that driving rehabilitation for patients with CNS injury should be supported in terms of evaluation and treatment.
열화학증기증착법을 이용한 그래핀의 합성 및 투과전자현미경 관찰용 그리드 멤브레인으로의 응용
이병주,정구환,Lee, Byeong-Joo,Jeong, Goo-Hwan 한국재료학회 2012 한국재료학회지 Vol.22 No.3
We present a method of graphene synthesis with high thickness uniformity using the thermal chemical vapor deposition (TCVD) technique; we demonstrate its application to a grid supporting membrane using transmission electron microscope (TEM) observation, particularly for nanomaterials that have smaller dimensions than the pitch of commercial grid mesh. Graphene was synthesized on electron-beam-evaporated Ni catalytic thin films. Methane and hydrogen gases were used as carbon feedstock and dilution gas, respectively. The effects of synthesis temperature and flow rate of feedstock on graphene structures have been investigated. The most effective condition for large area growth synthesis and high thickness uniformity was found to be $1000^{\circ}C$ and 5 sccm of methane. Among the various applications of the synthesized graphenes, their use as a supporting membrane of a TEM grid has been demonstrated; such a grid is useful for high resolution TEM imaging of nanoscale materials because it preserves the same focal plane over the whole grid mesh. After the graphene synthesis, we were able successfully to transfer the graphenes from the Ni substrates to the TEM grid without a polymeric mediator, so that we were able to preserve the clean surface of the as-synthesized graphene. Then, a drop of carbon nanotube (CNT) suspension was deposited onto the graphene-covered TEM grid. Finally, we performed high resolution TEM observation and obtained clear image of the carbon nanotubes, which were deposited on the graphene supporting membrane.