https://scholar.dgist.ac.kr/handle/20.500.11750/13572 2026-04-04T14:15:09Z https://scholar.dgist.ac.kr/handle/20.500.11750/59974 Title: Diffuse speckle contrast analysis for flowmetry with deep light sources Author(s): Jang, Seo Won; Moon, Soomin; Park, Jae Yoon; Lee, Tae Gyun; Lee, Kijoon Abstract: Diffuse optical probes for monitoring various hemodynamic variables usually use tissue-contacting fiber based probes, and no practical cases exist where source location is positioned in deep tissue, as diffuse optical spectroscopy and tomography are normally regarded as a non-invasive imaging technique. There are some cases, however, where the light source is positioned in deep tissue, as in the case of recently developed laser acupuncture. In this study, we theoretically analyze the light propagation in a semi-infinite diffuse medium with a deep light source, especially in the context of blood flow measurement. A liquid phantom study with deep light sources is performed to validate the analytic solution of photon diffusion equation, and a diffuse speckle contrast analysis (DSCA) measurement from a flow phantom within a solid matrix is performed to demonstrate the feasibility of the proposed method. The results show that the flow measurement using DSCA with a deep light source is not only feasible, but also has advantages in some cases. Sensitivity analysis shows the light source with a depth of up to 2 cm can be used to provide the information on the magnitude and location of blood flow. 2026-02-28T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/59068 Title: 침 시술과 병행가능한 혈류측정용 프로브 Author(s): 이화정; 이기준; 박재윤; 김기찬 Abstract: 본 발명에 따른 혈류 프로브는 침구의 지지대 역할을 통해 안정적으로 침 자극을 줄 수 있으며, 혈류 측정을 통해 국소적인 생리학적 지표의 변화를 볼 수 있고, 이를 통해 단순한 침에 의한 효과검증 뿐만 아니라, 전기침, 진동침, 레이저 침 등 다양한 자극에 의한 신체변화를 정량적으로 연구할 수 있다. https://scholar.dgist.ac.kr/handle/20.500.11750/59006 Title: Diffuse speckle contrast analysis for deep tissue flow monitoring Author(s): Yeo, Chaebeom; Lee, Kijoon; Song, Cheol Abstract: Recently, diffuse speckle contrast analysis (DSCA) system has been reported as novel flowmetry by demonstrating in-vivo blood flow monitoring. The DSCA has been studied as a deep tissue flowmetry with merits such as easy signal analysis, short acquisition time, and an economic and simple implementation. This talk presents various biomedical applications of the DSCA system. The applications include in-vivo arm-cuff protocol, chick embryo monitoring during entire incubation period, and blood flow monitoring in medicine. Also, its broad applicability as a flowmetry could be expanded into a stroke rat brain monitoring. 2017-09-27T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/58076 Title: 나선 악보, 나선 악보 제공 장치 및 방법 Author(s): 노준탁; 이혜준; 우한결; 이기준; 장지호; 추장우; 이재혁