https://scholar.dgist.ac.kr/handle/20.500.11750/13572 2026-04-24T20:21:45Z https://scholar.dgist.ac.kr/handle/20.500.11750/60245 Title: 지정위치에서 지구 모습을 상상할 수 있는 지구모델 Author(s): 이기준 https://scholar.dgist.ac.kr/handle/20.500.11750/60223 Title: Local Microcirculation Level Changes During Laser Acupuncture Treatment of Rats With Osteoarthritis Author(s): Park, Jae Yoon; Youn, Cha-kyung; Kang, Sang-mi; Choi, Gisoon; Jang, Seo Won; Chung, Hea Ik; Kim, Jae-min; Myeong, Ju-yeong; Yang, Ji-hye; Nguyen, Cong Duc; You, Yanghee; Na, Changsu; Lee, Kijoon Abstract: This study evaluates whether a deep-tissue microcirculation measurement can serve as an indicator of laser acupuncture treatment efficacy in an osteoarthritis (OA) animal model. Four groups of rats (normal, OA, OA10, and OA20, n = 6 each) were prepared where OA10 and OA20 mean treated groups with different light doses. Blood flow index (BFI) was measured at four time points (T0–T3) near acupoints GB34 and GB39 using a custom-made diffuse speckle contrast analysis (DSCA) system. BFI measurement showed an increase after OA induction and it remained elevated, whereas treatment groups exhibited a decrease in BFI. Spectral analysis revealed meaningful changes in the myogenic wave band, and a support vector machine classification demonstrated that incorporating BFI at T1 along with anatomical features significantly improved group separation accuracy, indicating a strong correlation between acute inflammatory response and anatomical indices. 2025-12-31T15:00:00Z 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.