• 제목/요약/키워드: Biomedical Engineering

검색결과 7,029건 처리시간 0.038초

Treatment of Bone Repair by Inductively Magnetic Fields

  • 안재목;;김희찬;민병구
    • 대한의용생체공학회:학술대회논문집
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    • 대한의용생체공학회 1992년도 춘계학술대회
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    • pp.213-217
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    • 1992
  • An inductively coupled magnetical signal (pulse wave, 0.7 to 60Hz, eighteen volts peak to Peak) that was applied non-invasively on the skin surface overlying the approximate site(measure position). In the group with unipolar pulse signal currents produced smaller than in the group with bipolar pulse signal. The signal was transmitted to the active coil, including a time-varying magnetic field: this in turn induced a the-varying electrical field in the field in the bone. It is very important to determine system parameters due to treatment time(healing) and the simplicity. This paper investigation was designed to compare the relative effects of pulsed unipolar currents with the effects of an identical pulsed bipolar currents. Since Inductive coupling is non-invasive and involves portable equipment, it is easy to apply and requires precise localization, it has distinct advantages and field characteristics along the bone for each different signal.

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파킨슨병 환자의 경직에 대한 임상적 평가의 정량화 (Quantification of Clinical assessment of Rigidity in patients with Parkinson's Disease)

  • 이재호;김지원;권유리;엄광문;고성범;김형식;이정한;이정환
    • 대한의용생체공학회:의공학회지
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    • 제31권4호
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    • pp.275-279
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    • 2010
  • The purpose of this study was to quantify the clinical assessment of rigidity at wrist in patients with Parkinson's disease. The experimental system was designed that the effect of gravity was negated by restricting motion at the horizontal plane and inertia was predetermined from a biomechanical measurement. Forty five patients with Parkinson's disease participated in this study. Viscoelastic properties were calculated from the experimental data acquired during intermittent passive movement of wrist. Viscoelastic constants correlated well with the rigidity scores of UPDRS, i.e., Spearman's r=0.733 and 0.905 for spring and damping constants, respectively. The results suggest that viscoelastic properties can be used as quantitative measures of rigidity.

A Study on the Estimation of Continuous Blood Pressure using PIT and Biometric Parameters

  • Park Eun-Kyoung;Cho Baek-Hwan;Park Sang-Hae;Lee Jong-Youn;Hwang Hwan-Sik;Park Hun-Ki;Lee Jong-Shill;Kim In-Young;Kim Sun-I
    • 대한의용생체공학회:의공학회지
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    • 제27권1호
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    • pp.1-5
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    • 2006
  • In this paper, we propose a subject-independent regression model to estimate systolic blood pressures (SBP) conveniently and continuously. There have been several researches on estimating SBP with pulse transit time (PTT) and they showed promising results. However, previous studies used only PTT as the estimation parameter, and their models were generated with just one person's PTT data which is not applicable to estimating other person's SBP. Therefore, we collected several additional biometric parameters with 202 healthy subjects. After statistical analysis of measured biometric parameters with SBP, we chose final estimating parameters including PTT to generate a multiple linear regression model for estimating SBP. Comparing the results of our study with approvable standards of automated sphygmomanometers developed by Association for the Advancement of Medical Instrumentation and approved by American National Standards Institute (ANSI/AAMI) indicates that our proposed method for continuously blood pressures monitoring gives an acceptable error.

The Optimum TE in fMRI at 1.5T and 3.0T MRIs

  • Kim, Tae;Suh, Tae-Suk;Choe, Bo-Young;Shinn, Kyung-Sub;Lee, Heung-Kyu
    • 한국자기공명학회:학술대회논문집
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    • 한국자기공명학회 2000년도 동계총회 및 제16회 자기공명 학술발표회
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    • pp.44-46
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    • 2000
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적외선센서를 이용한 골프 퍼팅자세 최적화에 관한 연구 (A study on optimization of golf putting motion using IR sensors)

  • 임성환;정구인;김지선;차민수;최주현;전재훈
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.15-16
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    • 2011
  • 최근 골프에 관한 관심도가 급증하고 있다. 현재 일반인들이 전문적인 골프 자세 교육을 받을 수 있는 교육시설은 비교적 흔하지 않다. 골프에서는 골프공의 위치나 양발너비가 퍼팅에 중요한 요인으로 작용한다. 본 연구는 퍼팅자세를 교정하는데 있어 도움을 주고자 하는 목적을 가지고 진행되었다. 적외선센서를 사용하여 비교적 간편하게 골퍼들의 신발에 탈부착을 할 수 있고 이용하기 간편하게 디자인 하였으며, 이는 보다 정확한 퍼팅자세를 훈련 하는데 도움이 될 수 있을 것이다. 더 나아가 이 실험은 골프뿐만 아니라 자세교정을 필요로 하는 스포츠분야에 적용될 수 있으며 보다 객관화된 데이터를 빠르고 정확하며 실시간으로 측정할 수 있음으로 더 많은 분야에서 사용자들에게 도움이 될 것이라고 사료된다.

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