굴절교정레이저각막절제술과 레이저각막절삭성형술에서 신경성장인자의 농도와 의미

송원경,이형근,김현창,이성호,김응권,Won Kyung Song,Hyung Keun Lee,Hyeon Chang Kim,Sung Ho Lee,Eung Kwon Kim 대한안과학회 2006 대한안과학회지 Vol.47 No.8

Purpose: To determine whether tear nerve growth factor (NGF) concentration correlates with corneal sensation and ocular surface dryness after photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK). Methods: A prospective, non-randomized comparative clinical trial. Seventy eyes of 35 patients and 76 eyes of 38 patients underwent PRK and LASIK procedures to correct myopia and myopic astigmatism, respectively. Total tear protein level, tear NGF concentration, corneal sensation, tear film break-up time (BUT) and Schirmer values were measured before and 1 day, 1 week, 1 month, 3 months, and 6 months after the surgery. Results: The postoperative mean tear NGF/total tear protein ratio (NGF/tP) increased in both PRK and LASIK patients compared to their preoperative levels (p<0.0001). At 1 week and 1 month postoperatively, the NGF/tP ratio was higher in PRK than in LASIK subjects (p<0.0001). Up to 6 months postoperatively, the mean corneal sensation after LASIK in the ablated zone was lower than the preoperative sensation (p<0.0001), whereas this was not the case in PRK subjects. Mean BUT and Schirmer values were significantly lower in LASIK-treated eyes compared to PRK-treated eyes up to 6 months postoperatively (p<0.0001). The early postoperative tear NGF/tP ratio correlated with the postoperative 6 month corneal sensation, BUT and Schirmer values. Conclusions: The difference in postoperative corneal sensation and ocular surface dryness between PRK- and LASIK-treated eyes was related to the difference in the early postoperative levels of NGF/tP, which implies NGF might influence corneal nerve regeneration after these two surgeries.

신생혈관녹내장 환자의 방수내 변형성장인자-β와 혈관내피성장인자 농도와 아메드밸브 수술 결과

송원경,이준행,홍영재,김찬윤,Won Kyung Song,Jun Haeng Lee,Young Jae Hong,Chan Yun Kim 대한안과학회 2006 대한안과학회지 Vol.47 No.4

Purpose: To assess the relationship of transforming growth factor-β (TGF-β) and vascular endothelial growth factor (VEGF) levels in the aqueous humor of neovascular glaucoma (NVG) patients and the results of Ahmed valve implantation surgery. Methods: We compared surgical outcomes of NVG patients who underwent Ahmed valve implant surgery from January 2002 through October 2002 at severance hospital with levels of TGF-β1, TGF-β2 and VEGF in the aqueous humors of these patients. Results: Nineteen eyes (19 patients) were analyzed in the study. The success of surgery was defined as intraocular pressure maintained as 6-20 mm Hg regardless of additional glaucoma medications taken. Twelve eyes (63%) satisfied successful surgery. TGF-β1 concentration was 1.51 ng/ml in the success group and 2.31 ng/ml in the failed group (p=0.295). TGF-β2 concentration was 5.19 ng/ml in the success group and 5.73 ng/ml in the failed group (p=0.367). VEGF concentration was 10.21 ng/ml in the success group and 9.87 ng/ml in the failed group (p=0.516). All showed no statistical difference between the groups. Conclusions: In our study, no significant relationship between levels of TGF-β1, TGF-β2, or VEGF in the aqueous humor and the surgical outcomes of Ahmed valve implantation were found in patients with NVG.

휠체어 장착형 지능형 재활 로봇을 위한 칼라 비전 시스템

송원경,이희영,김종성,변증남,Song, Won-Kyung,Lee, He-Young,Kim, Jong-Sung,Bien, Zeung-Nam 대한전자공학회 1998 電子工學會論文誌, S Vol.s35 No.11

KARES(KAIST Rehabilitation Engineering System)는 보조자 없이 팔과 다리가 불편한 장애인과 노약자가 쉽게 이동하며 일상 생활을 하는 것을 돕기 위하여, 6 자유도의 로봇 팔과 휠체어에 장착한 형태의 재활 로봇 시스템이다. 재활 로봇 시스템에서 로봇 팔을 프로그램하고 제어할 수 있는 인터페이스 장치는 매우 중요하다. 특히 사용자가 로봇 팔을 직접 제어하는 경우, 사용자의 인지력의 부담이 심하고 조작의 어려움을 느낀다. 이에 대한 해결책으로 로봇이 자율적으로 작업을 수행하기 위한 칼라 비전 시스템을 제안하고 기본적으로 필요한 네 가지 작업을 정하였다. 로봇 팔에 아이-인-핸드 형태로 카메라를 장착하여 칼라 비전 시스템을 구축하고, 탁자 위에 있는 칼라 표식이 부착된 컵을 잡는 작업과 작은 컵을 입 근처로 이동하는 작업을 구현하였다. 그 결과, 실내 환경에서 실시간에 성공적으로 수행되었다. KARES (KAIST Rehabilitation Engineering System) is the rehabilitation robot system in the type of the 6 degrees of freedom robot arm mounted on the wheelchair, in order to assist the independent livelihood of the disabled and the elderly. The interface device for programming and controlling of the robot arm is essential in the rehabilitation robotic system. Specially, in the case of the manual operation of the robot arm, the user has the burden of cognition and the difficulty for the operation of the robot arm. As a remedy, color vision system for the autonomous performance of jobs is proposed, and four basic desired jobs are specified. By mounting the camera in eye-in-hand type, color vision system for KARES is set up. The desired jobs for picking up the target and moving it to the user's face for drinking are successfully performed in real-time at the indoor environment.

최중증장애인을 위한 식사보조로봇의 입력장치

송원경(Won-Kyung Song),권기범(Kibum Kwon),송원진(Won-Jin Song),안광옥(Kwang-Ok An),김종배(Jongbae Kim) 한국HCI학회 2011 한국HCI학회 학술대회 Vol.2011 No.1

국립재활원 재활연구소에서는 상지의 움직임이 어려운 장애인을 위하여 끈적이는 밥을 포함한 한식 대응이 가능한 식사보조로봇을 개발하고 있다. 식사보조로봇으로 중증장애인도 본인의 의지를 바탕으로 먹고 싶은 음식을 먹고 싶을 때 먹을 수 있다는 장점이 있다. 중증장애인의 사용자 테스트에 의하면 식사보조로봇의 입력장치가 중요한 부분 중 하나이다. 버튼형 입력장치와 조이스틱형 입력장치를 이용하여 식사보조로봇과 연결하여 사용자 테스트를 수행하여 각각의 장단점을 분석하였다. 중증 장애인이 편리하게 식사하기에 용이한 조이스틱 중심의 입력장치의 주요 인자를 도출하였다. National Rehabilitation Center is developing a self-feeding robot that handles Korean food including sticky rice for the people with disabilities of upper limbs. Self-feeding robot supports users to eat the chosen food when they want it. In accordance with usability tests of the self-feeding robot, the input device is one of important parts. We analyze pros and cons of input device using buttons and joysticks. We extract core factors of comfortable joystick-typed input device

재활로봇의 동향 및 재활로봇 중개연구

송원경(Won-Kyung Song) 제어로봇시스템학회 2014 제어로봇시스템학회 각 지부별 자료집 Vol.2014 No.8

스마트 보조 기술

송원경(Won-Kyung Song) 한국재활복지공학회 2016 한국재활복지공학회 학술대회논문집 Vol.2016 No.11

시추자료 정보화를 위한 DB 프로그램 개발

송원경(Won-Kyung Song),박형동(Hyung-Dong Park),유명환(Myong-Hwan Yu) 한국암반공학회 1999 한국암반공학회 학술대회 및 세미나 자료집 Vol.- No.-

Analysis of the Correlation between Triceps Surae Muscle and Plantarflexor Torque in the Elderly

김경(Kyung Kim),권대규(Tae-Kyu Kwon),송원경(Won-Kyung Song),김종배(Jong-Bae Kim) 한국HCI학회 2011 한국HCI학회 학술대회 Vol.2011 No.1

원발성 포도막흑색종의 진단을 위한 영상의학적 검사

배정훈,송원경,변석호,이성철,Jeong Hun Bae,Won Kyung Song,Suk Ho Byeon,Sung Chul Lee 대한안과학회 2008 대한안과학회지 Vol.49 No.9

Purpose: To investigate various imaging techniques for the diagnosis of primary uveal melanomas in Korean patients. Methods: We retrospectively reviewed the medical records of 35 eyes in 35 patients (22 males, 13 females) diagnosed with uveal melanomas between September 2004 and December 2006. The findings of fundus photographs, ultrasonography, CT scan, MRI, and PET scan were documented. Results: A/B scan ultrasonography showed typical findings of uveal melanomas in 74.3% (26 eyes) of the patients. On CT scan, the mass appeared as a homogenous hyperdense lesion, and on MRI, the typical signal of hyperintensity on the T1-weighted image and hypointensity on the T2-weighted image was seen in 89.3% (25 eyes), with contrast enhancement in only 46.4% (13 eyes) of the patients. A PET scan revealed positive tumor uptake in 22.7% (5 eyes) of the patients. Conclusions: Although ultrasonography is the most useful and accurate method for the diagnosis of uveal melanoma, it provides more atypical cases in Korean patients than Caucasian patients. CT scans and MRI can be used for a differential diagnosis, but the diagnostic efficacy of PET scans is low. J Korean Ophthalmol Soc 2008;49(9):1461-1467

젊은 성인과 뇌졸중 장애인의 일상생활동작의 상지 관절운동범위 비교

김경(Kyung Kim),송원경(Won-Kyung Song),이정수(Jeongsu Lee),고병우(Byung-Woo Ko),박대성(Dae-Sung Park),김종배(Jongbae Kim) 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1

상지 재활을 위한 일상생활분석은 뇌졸중 장애인의 재활 훈련프로토콜을 구성하는 중요한 요소이다. 일상생활과 관련된 동작에 기인한 재활훈련은 치료 효과뿐만 아니라, 사용자에게 강한 동기부여를 유발시킨다. 본 논문에서는 젊은 성인의 상지일상생활동작과 비교하여 뇌졸중 장애인의 상지운동학적 특성을 알아보았다. 젊은 성인 8명과 뇌졸중 장애인 8명이 피험자로 참여하였고, 머리, 허리 및 무릎높이로 이루어진 12가지의 상지일상생활동작에 대하여 동작 분석을 실시함으로써 관절의 운동범위(Range of motion, ROM) 및 관절 ROM의 최소값과 최대값을 분석하였다. 분석결과, 뇌졸중 장애인은 머리높이의 물마시기 동작을 수행할때, 어깨관절의 외전-내전동작과 팔꿉관절의 굽힘-폄동작에서 유의하게 큰 관절운동범위가 분석되었고, 허리높이에 해당하는 물건 옮기기 동작 시, 어깨관절의 외전-내전 동작 및 내회전-외회전 동작과 팔꿉관절의 굽힘-폄 동작에서 유의하게 작은 관절운동범위를 갖는 특성을 보였다. 마비측 무릎에 손 가져가기 동작시, 뇌졸중 장애인은 팔꿉관절의 굽힘-폄동작에서만 유의하게 작은 관절운동범위 값이 분석되었다. 이러한 뇌졸중 장애인의 운동 특성은 정량적인 재활 훈련프로토콜 정립 및 다양한 컴퓨터 상호작용의 적용에 활용될 수 있을 것으로 기대한다. Analyzing activities of daily living (ADL) for the training protocol of practical upper limb rehabilitation is challenging in stroke patients. ADL task-based training provides the user with therapeutic effects as well as strong usage motivation. In this paper, kinematics of upper limbs in stroke survivors compared to kinematics of upper limbs in healthy subjects during upper limb ADL tasks. The motions of 8 healthy participants and 8 stroke patients were captured during ADL tasks in head, waist and knee levels, and then analyzed with respect to maximum and minimum angle and range of motion (ROM) of seven joints in upper limbs as kinematics. In case of ADL tasks in a head level, stroke patients have significantly bigger ROM in abduction-adduction motion of a shoulder joint and flexion-extension motion of an elbow joint, and stroke patients have significantly smaller ROM in abduction-adduction motion and external rotation motion of a shoulder joint and flexion-extension motion of an elbow joint during performing ADL tasks in a waist level. In a knee level, stroke patients only have smaller ROM in flexion-extension motion of an elbow joint. Thus, the characteristics of upper limb motion in stroke patients will be used for protocol of rehabilitation training, development of a rehabilitation robot, and various human-computer interaction.