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Validation of posturography analysis in patients undergoing surgery for chronic ankle instability
Byung Min Yoo,I Sac Kim,이성현 대한정형외과 스포츠의학회 2022 Arthroscopy and Orthopedic Sports Medicine Vol.9 No.2
Background: Evaluation of the function of patients with chronic ankle instability (CAI) in clinical settings is important not only to identify the damage severity but also to evaluate the treatment effectiveness and prevent recurrence. However, objective diagnostic indicators for evaluating the functional stability of CAI are uncommon. This study aimed to determine the validity of the posturography test as an objective indicator of functional instability in relation to the Foot and Ankle Outcome Score (FAOS) and modified Star Excursion Balance Test (mSEBT) following the modified Broström procedure for CAI. Methods: A retrospective study was conducted on patients who underwent CAI surgery and posturography before and 1 year after surgery. The FAOS was measured as subjective result and the mSEBT as objective result. Posturography analysis using Tetrax devices was conducted to measure fall risk and general stability index. The difference between the measured fall risk and general stability index before and after surgery was compared with that between FAOS and mSEBT before and after surgery. Results: A total of 87 patients were evaluated. Their average age was 32.2 years, and the average follow-up period was 29.6 months. The differences in the fall risk before and after surgery, measured via posturography, were associated with FAOS pain, sports activities, daily life activities, quality of life, and mSEBT. In addition, the differences in the general stability index before and after surgery, measured via posturography, were associated with mSEBT. Conclusion: In the posturography, the fall risk and general stability index exhibited a weak negative correlation with mSEBT. In addition, the fall risk demonstrated a weak negative correlation with the FAOS, which is a subjective result. These findings indicate that posturography using Tetrax devices is a useful and reliable tool for the objective evaluation of the functional stability of patients with CAI.
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Real-time Image Scanning System for Detecting Tunnel Cracks Using Linescan Cameras
Jeong, Dong-Hyun,Kim, Young-Rin,Cho, I-Sac,Kim, Eun-Ju,Lee, Kang-Moon,Jin, Kwang-Won,Song, Chang-Geun Korea Multimedia Society 2007 멀티미디어학회논문지 Vol.10 No.6
In this paper, real-time image scanning system using linescan cameras is designed. The system is specially designed to diagnose and analyse the conditions of tunnels such as crack widths through the captured images. The system consists of two major parts, the image acquisition system and the image merging system. To save scanned image data into storage media in real-time, the image acquisition system has been designed with two different control and management modules. The control modules are in charge of controlling the hardware device and the management modules handle system resources so that the scanned images are safely saved to the magnetic storage devices. The system can be mounted to various kinds of vehicles. After taking images, the image merging system generates extended images by combining saved images. Several tests are conducted in laboratory as well as in the field. In the laboratory simulation, both systems are tested several times and upgraded. In the field-testing, the image acquisition system is mounted to a specially designed vehicle and images of the interior surface of the tunnel are captured. The system is successfully tested in a real tunnel with a vehicle at the speed of 20 km/h. The captured images of the tunnel condition including cracks are vivid enough for an expert to diagnose the state of the tunnel using images instead of seeing through his/her eyes.
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Real-time Image Scanning System for Detecting Tunnel Cracks Using Linescan Cameras
Dong Hyun Jeong,Young Rin Kim,I-Sac Cho,Eun Ju Kim,Kang Moon Lee,Kwang Won Jin,Chang Geun Song 한국멀티미디어학회 2007 멀티미디어학회논문지 Vol.10 No.6
In this paper, real-time image scanning system using linescan cameras is designed. The system is specially designed to diagnose and analyse the conditions of tunnels such as crack widths through the captured images. The system consists of two major parts, the image acquisition system and the image merging system. To save scanned image data into storage media in real-time, the image acquisition system has been designed with two different control and management modules. The control modules are in charge of controlling the hardware device and the management modules handle system resources so that the scanned images are safely saved to the magnetic storage devices. The system can be mounted to various kinds of vehicles. After taking images, the image merging system generates extended images by combining saved images. Several tests are conducted in laboratory as well as in the field. In the laboratory simulation, both systems are tested several times and upgraded. In the field-testing, the image acquisition system is mounted to a specially designed vehicle and images of the interior surface of the tunnel are captured. The system is successfully tested in a real tunnel with a vehicle at the speed of 20 ㎞/h. The captured images of the tunnel condition including cracks are vivid enough for an expert to diagnose the state of the tunnel using images instead of seeing through his/her eyes.
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이주형(Ju Hyung Lee),이호영(Ho Young Lee),김현수(Hyeon Su Kim),김인기(In Ki Kim),이중기(Choong Ki Lee),손경락(Kyung Rak Sohj),문세광(Sac Kwang Moon) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.1
Multiple lymphomatous polyposis(MLP) of the gastrointestinal tract is a rare form of gastrointes- tinal lymphoma. Clinical, histopathologic, and immunohistochemical findings are somewhat different from those of primary gastrointestinal lymphoma. Therefore, it is important to recognize this rare form of gastrointestinal lymphoma for its prognostic and therapeutic implications. We report a case of MLP of descending colon, sigmoid colon and rectum in 56 years old man who has a soft tissue mass in right middle abdomen with a review of literature. He was treated with 6 cycles of CHOP regimen resulting in good clinical remission. (Korean J Gastroenterol 1996; 28:118 - 123)
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