• Title/Summary/Keyword: 자기장 자극

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Effect of Pulse Magnetic Field Stimulus on Blood Flow using Digital Infrared Thermal Imaging (체열진단을 통한 펄스자기장 자극기의 혈류개선효과 고찰)

  • Lee, Hyun-Sook
    • Journal of the Korean Magnetics Society
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    • v.21 no.5
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    • pp.180-184
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    • 2011
  • The changes in the blood flow in the peripheral vascular system under strong pulsed magnetic fields (pMF) were studied by digital infrared thermal imaging (DITI). After pMF stimulus temperatures in stimulated area were commonly increased in both groups of age and gender. In order to reduce heat generated from coil in pMF stimulus system plastic moldings were fabricated, so that certain distance was kept between stimulus system and the skin and to prevent direct contact to the skin. It is believed that skin temperature is increased by internal electromagnetic energy stimulated the peripheral vascular system by non-contact method.

Digital Infrared Thermographic Imaging(DITI) analysis by micro-magnetic stimulation for muscle fatigue recovery and muscle pain control (근피로 회복 및 근통증 완화를 위한 미약 자기장 자극에 대한 체열변화 분석)

  • Kim, Soo-Byung;Lee, Na-Ra;Lee, Seung-Wook;Lee, Kyong-Joung;Lee, Yong-Heum
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.7
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    • pp.1653-1660
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    • 2010
  • In this study, change of body surface temperature was measured using Digital Infrared Thermographic Imaging(DITI) to check muscle fatigue recovery & muscle pain control by magnetic stimulations. For clinical trials, subjects were divided into 3 groups : non stimulation group(NSG), electrical stimulation group(ESG) and micro magnetic stimulation group(MSG). In result, temperature differences between left and right arm surfaces were measured as much as $0.86{\pm}0.43^{\circ}C$(n=96) after the exercise, $0.78{\pm}0.12^{\circ}C$ after the electrical stimulation and $0.1{\pm}0.39^{\circ}C$ after the micro magnetic stimulation. Also after 3days, temperature differences between left and right arm surfaces were measured as much as $0.3{\pm}0.14^{\circ}C$ in the NSG, $0.05{\pm}0.21^{\circ}C$ in the ESG and $0.03{\pm}0.21^{\circ}C$ in the MSG. These data showed that the lowest temperature difference between left/right body surface was measured in MSG.

-On Acupoints & Trigger Points- Muscle fatigue evaluation using the Micro-electromagnetic stimulation (-경혈 및 트리거 포인트에서- 미약 자기장을 이용한 근피로 회복 평가)

  • Kim, Soo-Byung;Lee, Na-Ra;Shim, Tae-Kyu;Lee, Seung-Wook;Lee, Yong-Heum
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.5
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    • pp.1231-1239
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    • 2010
  • The aim of this study was developing the non-invasive focused magnetic stimulation system(NI_FMSS) that can stimulates acupoints which are small parts and knotted muscular tissues. To evaluate pain treatment effect of the NI_FMSS, we caused muscle fatigue to 25 subjects in biceps of the arm. Then, we stimulated acupoints(trigger points) HT2 using low frequency stimulator(10 subjects) and NI_FMSS(10 subjects). The other 5 subjects had not been stimulated. We analyzed muscle fatigue recovery with median frequency, RMS and median power in frequency domain for 5 days. We checked the magnetic stimulation effect on acupoint by evaluation of muscle fatigue recovery. Therefore, we identified that the NI_FMSS was more efficient system to relieve muscle pain than electric-stimulation system.

Response Properties of Meridians for focused variable electromagnetic stimulus (접속형 가변 전자계 자극에 대한 경락반응특성)

  • Lee, Gyoun-Jung;Cho, Dong-Guk;Kim, Soo-Byung;Kwon, Sun-Min;Shin, Tae-Min;Lee, Kyoung-Joung;Lee, Yong-Heum
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.7
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    • pp.1399-1410
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    • 2009
  • It is a method to treat pain using medication, neurotomy, and surgery. And acupuncture, ultrasound, electric treatment, and magnetic treatment are applied as a alternative physiotherapy. Electronic therapy is useful but it can be affected by impedance of skin or subcutaneous tissue. So, percutaneous stimulation is leading therapy, that is very randomly. We developed the system which can stimulate parts of acupuncture point noninvasively using the focused magnetic field. And we designed the magnetic stimulation electrode which is considered efficiency of the magnetic stimulation. It can make similar stimulation with manual acupuncture. To confirm the availability and reliability we compared Meridian Electronic Potential(MEP) change between manual acupuncture and magnetic stimulation. From this result, we found out the MEP changes of manual acupuncture and magnetic stimulation were similar. And there were various response properties as changes of stimulation method, intensity, and frequency. Also, the MEP change can be induced by electromagnetic stimulation. We confirmed that it is possible to use electromagnetic stimulation as a acupoint stimulation or pain treatment instrument.

Change in Rouleau Formation of Red Blood Cells by Pulse Magnetic Field Stimulus in the Hand (펄스자기장 자극에 의한 손의 적혈구 형태학적 변화)

  • Hwang, Do Guwn
    • Journal of the Korean Magnetics Society
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    • v.24 no.1
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    • pp.28-33
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    • 2014
  • The change of rouleau formation of red blood cells in the hand stimulated by pulse magnetic field having a maximum intensity of 0.27 Tesla and pulse duration of 0.102 msec was investigated. Before pulse magnetic field stimulus, the red blood cells of test subject were adjoined over ten and the flow of cells was slowed. However after the stimulus in the hand during 10 minutes, the red blood cells adjoined over tens was spreaded out each other and its motion was fast. Also the red blood cells of left hand unstimulated by pulse magnetic field were spreaded out each other, even though the right hand was stimulated during 10 minute. It prove that the rouleau formation of red blood cells can be improve in the whole body in spite of stimulus in the hand because the blood is flowing a whole body.

Dynamics of Rouleaux Patterns of Red Blood Cells under Pulse Magnetic Field (강한 펄스자기장 자극에 의한 적혈구 연전현상의 활동성 조사)

  • Hwang, Do Guwn
    • Journal of the Korean Magnetics Society
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    • v.27 no.3
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    • pp.92-97
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    • 2017
  • It is widely known that pulsed magnetic field (PMF) is very useful tool to manipulate chemical and physiological processes in human body. The purpose of our study is to observe dynamics of rouleaux patterns of red blood cells (RBC) under PMF. The aggregation of RBCs or rouleaux formation is caused by fibrinogen in blood plasma. The maximum magnetic field intensity is 0.27 T and pulse time of 0.102 msec and pulse repetition rate was 1 Hz. PMF stimulus was applied to the palm of left hand for 5, 10, 15 and 20 min. Live blood analysis was used in vitro in order to quantitatively estimate the velocity of RBC exposed to PMF stimulus. The velocity of stacked-RBC of 10 minute PMF stimulus was increased up to $8{\times}10^{-4}m/sec$, but it decreased rapidly as the time passed. The results of present study have adduced that PMF stimulus on hand provide the improvement of RBC rouleaux formation, increase of RBC's moving velocity as well as low blood viscosity.

A analysis of distribution induced electric field in brain used accurate brain shape model (정밀두뇌형상모델을 이용한 두뇌 내부에서 유도전기장 분포 해석)

  • Lee, Il-Ho;Won, Chul-Ho;Kim, Dong-Hun
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1898-1899
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    • 2007
  • 경두개자기자극술(Transcranial Magnetic Sitmulation:이하 TMS)은 두뇌 외부에 설치된 코일을 이용하여 짧은 시간에 강한 임펄스형태의 자기장을 인가하여 두뇌 내부에 유도전기장을 발생시켜 특정 부위의 신경조직을 자극하는 비침습적(noninvasive)인 기술이다. 두뇌 내부에 정확한 자극 분포와 자극 세기를 알기 위해 Zubal Data에 근거한 정밀한 두뇌형상모델을 이용하여 수치해석 하였다. 수치해석 결과 복잡한 머리 내부에 유기되는 정확한 유도전기장 분포를 예측하였다.

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Analysis and measurement of magnetic flux density distribution inside a brain model taking into account conductivity heterogeneity (비균질성을 고려한 두뇌모형 내부의 자속밀도 분포 해석 및 측정)

  • Lee, Il-Ho;Woo, Sang-Hyo;Won, Chul-Ho;Kim, Dong-Hun
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.1991-1992
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    • 2008
  • 경두개자기자극술(Transcranial Magnetic Sitmulation:이하 TMS)은 두뇌 외부에 설치된 코일을 이용하여 짧은 시간에 강한 펄스 형태의 자기장을 인가하여 두뇌 내부에 유도전기장을 발생시켜 특정 부위의 신경조직을 자극하는 비침습적(noninvasive)인 기술이다. 두뇌 내부에 정확한 자극 분포와 자극 세기를 알기 위해 Zubal Data에 근거한 정밀한 두뇌형상모델을 이용하여 비균질성을 고려해 수치해석을 하였다. 수치해석 결과 복잡한 머리 내부에 유기되는 정확한 유도전기장 분포를 예측하였고 실험을 통해 수치해석의 유효성을 증명하였다.

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Development of stimulator for peripheral disturbance therapy using A variable Micro-electromagnetic (미약 전자기장을 이용한 말초장애 치료시스템 개발)

  • Kim, Soo-Byung;Lee, Seung-Wook;Shim, Ta-Kyu;Lee, Na-Ra;Lee, Yong-Heum
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.5
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    • pp.1209-1216
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    • 2010
  • It has increased that peripheral disturbance(blood flow, nerve, Raynaud's phenomenon) and finger rheumatoid arthritis which is caused by the diabetic complications. To improve these pain issues, we proposed new method for the Finger Disease Therapy(FDT). In this paper, we manufactured solenoid cylindrical coil which was only for the FDT using a variable micro-electromagnetic. Also, we designed the Finger Disease Therapy System(FDTS) which could select three stimulation modes(N_pulse, S_pulse, N/S_pulse) and frequency(0.25hz, 0.5hz, 1hz). We used a Teslameter to measure magnetic flux inner solenoid, and measured magnetic flux as distance(0 ~ 3cm) inner solenoid with stimulation modes and frequency. In the results, magnetic flux was the highest in center of solenoid(0cm) for all stimulation modes. Also, the highest magnetic flux was measured as N_pulse(294.3mT), S_pulse(293.8mT) in 1Hz and N/S_pulse (275.4mT) in 0.25Hz, respectively. Therefore, we developed the FDTS using various pattern and intensity for finger diseases therapy, and checked therapy clinic application possibility of the FDTS as measuring magnetic flux inner solenoid.