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Radiofrequency Neurotomy of Cervical Medial Branches for Chronic Cervicobrachialgia
신우람,김형일,신동규,신동아 대한의학회 2006 Journal of Korean medical science Vol.21 No.1
Chronic neck and arm pain or cervicobrachialgia commonly occurs with the degeneration of cervical spine. Authors investigated the usefulness of radiofrequency (RF) neurotomies of cervical medial branches in patients with cervicobrachialgia and analyzed the factors which can influence the treatment outcome. Demographic data, types of pain distribution, responses of double controlled blocks, electrical stimulation parameters, numbers and levels of neurotomies, and surgical outcomes were evaluated after mean follow-up of 12 months. Pain distribution pattern was not significantly correlated with the results of diagnostic blocks. Average stimulation intensity was 0.45 V, ranging from 0.3 to 0.69, to elicit pain response in cervical medial branches. The most common involvement of nerve branches was C4 (89%), followed by C5 (82%), C6 (75%), and C7 (43%). Among total of 28 patients, nineteen (68%) reported successful outcome according to outcome criteria after 6 months of followup (p=0.001), and eight (42%) of 19 patients reported complete relief (100%) of pain. Four patients showed recurrence of pain between 6 and 12 months. It was therefore concluded that cervical medial branch neurotomy is considered useful therapeutic modality for the management of cervicobrachialgia in selected patients, particularly in degenerative zygapophyseal disorders.
넓은 동적범위를 가지는 픽셀 수준 광집적시간 제어형 씨모스 디지털 픽셀 이미지 센서
신우람(Wooram Shin),구경모(Kyungmo Koo),권민우(Minwoo Kwon),천지민(Jimin Cheon) 한국정보기술학회 2015 Proceedings of KIIT Conference Vol.2015 No.6
본 논문에서는 넓은 동적범위 (WDR: wide dynamic range)를 가지는 픽셀 수준 광집적시간 제어형 씨모스 디지털 픽셀 이미지 센서를 제안한다 This paper proposes a CMOS digital pixel image sensor with light integration time control for wide dynamic range (WDR).
시변 페이딩 채널에서의 부호화된 MIMO-OFDM 시스템을 위한 저 복잡도 LMMSE 반복수신기
신우람(Wooram Shin),임광재(Kwang Jae Lim),권동승(Dong Seung Kwon) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6
In orthogonal frequency division multiplexing (OFDM) transmission, the time-varying effect gives rise to inter-carrier interference (ICI) degrading error performance due to orthogonality destruction, particularly, the influence of ICIs is more poignant when deploying multiple antennas since they are generated in proportion to the number of transmit antennas. In order to resolve this problem, we propose linear minimum mean square error (LMMSE) iterative receivers which provide good performance closed to matched filter bound with considerable computational complexity reduction.