• 융합신호처리학회 학술대회논문집
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• 한국신호처리시스템학회 2000년도 하계종합학술대회논문집
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• pp.269-272
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• 2000

It is need to develop and apply a human pulse diagnosis system providing a quantitative and automatic analysis in the the oriental medicine. In order to analyze quantitatively the characteristic of pulsation, each of points had to be recognized accurately notifying the existence and the position of feature point in the wave form. And getting the period of human pulse. Thus, in this paper, it is proposed the preprocessing method of human pulse and the detection method of period by Wavelet Transformation. The human pulse is seprated from each band through Wavelet Transformation and feature points can be recognized through over the fact, and then the parameter of proposed Mac-Jin parameter is measured. Commonly, Human pulse signal has often various noises which are baseline drift, high frequency noise and so on. So it is significant to remove that noises. Thus, in this paper, the one period of human pulse is deciede and the feature points are detected after doing the preprocessing by wavelet transformation. As a result, it could be confirmed that this method is effective as a real program for the auto-diagnosis of human pulse.

• 대한한의진단학회지
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• 제18권3호
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• pp.137-148
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• 2014

Objectives This study was conducted to derive consensus about physical attributes in pressure pulse waveform and pulse conditions by Delphi study. Methods Delphi research was conducted for 2 rounds via e-mail. 8 Professors who lecture on a diagnostics of K. M. from the society of Korean medicine diagnostics were participated in this survey. They were asked for answering about series of definition for a physical attribute in pressure pulse waveform and combination for physical attributes of pulse conditions. Results 4 survey items were decided to have high validity and 9 survey items were decided to come to consensus about a physical attribute in pressure pulse waveform. 6 pulse condition were decided to come to consensus. Conclusion Using Delphi method, physical attributes in pressure pulse waveform and combinations of physical attribute in pulse condition come to consensus.

• Journal of Acupuncture Research
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• 제30권4호
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• pp.1-14
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• 2013

Objectives : The purpose of this study is to investigate the effects of Sa-Am spleen-tonifying acupuncture on radial pulse in healthy human subjects. Methods : Forty healthy human subjects participated in this study, divided into acupuncture group and control group. Radial pulse was measured by 3 dimensional pulse imaging system(DMP-3000) before, right after, 30 minutes after and 60 minutes after acupuncture in the acupuncture group. The subjects in the control group didn't received acupuncture but took a rest and then the radial pulse was measured at the same time points as the acupuncture group. The parameters were analyzed by gender, measuring location, and measuring time point. However the time related parameters exceptionally were analyzed without distinction of measuring location. Results : 1. T, variance of period, T2/T, T4/T, (T-T4)/T, T4/(T-T4), and W significantly changed after acupuncture. 2. Pressure, amplitude of H1, amplitude of H2, Amplitude of H4 and pulse energy significantly changed after acupuncture. 3. Pulse area, systolic pulse area and diastolic pulse area significantly changed after acupuncture. 4. Elasticity, AIx and AIx/HR significantly changed after acupuncture. Conclusions : The effect of Sa-Am spleen-tonifying acupuncture in healthy human may be observed on time, amplitude, pulse area and augmentation index. Further studies on the effects of Sa-Am acupuncture using radial pulse are needed.

• 대한한의진단학회지
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• 제16권1호
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• pp.19-26
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• 2012

Objectives The aim of this study is to develop a cardiovascular simulator that can reproduce blood pressure pulse and blood flow similar to those of the human body. Methods In order to design a system similar to the human cardiovascular system, the required performances were determined by investigating the hemodynamic characteristics of the heart and the arterial system. Main organ to be imitated is heart in simulator. The rest of the system was minimally designed. Also, a blood pressure and blood flow measurement system was developed for measuring the results. Results The developed system showed blood pressure pulse at similar range of the human aorta. The result waveform include primary wave caused by ventricular systole except reflected wave. Conclusions The blood pressure and blow flow patterns were replicated by the simulator. These patterns were similar to those of the human body. The system will play an important role in studying pulse diagnostics.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.243-248
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• 2001

A radial artery pulse wave is well known as a good mans to diagnose human body condition in th field of Chinese medical science. Information about constitution as well as organs can be obtained by detecting the artery pulse wave. Recently, the information about the human body constitution may be utilized in accelerating the recovery process of the patient on the basis of comprehensive diagnosis. A radial artery pulse wave is considered as one of promising means in examining the human body constitution. Since the examination has been conducted by the feeling of finger, the diagnosis may occasionally have uncertainty or fatal error. In this paper, a new measuring system is suggested and developed to examine the pattern of a pulse wave correctly. The system is composed of four pressure vessels, pressure sensors and air supplying pumps. One of them is utilized for appropriately pressing the radial artery, three of them for detecting pressure change in several mmHg level. The detected data is shown and discussed.

• 한국방사선학회논문지
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• 제11권5호
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• pp.361-370
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• 2017

Brain MRI 검사에서는 영상을 얻기 위해 RF Pulse를 인체에 조사하게 되는데 이때 조사된 RF Pulse 에너지의 상당 부분은 우리 몸에 그대로 흡수되게 되고 이로 인해 인체 온도가 상승하게 되는데 노출 정도에 따라 인체에 영향을 주게 된다. 이러한 RF Pulse 에너지는 MRI 장비의 발전으로 인해 자기장의 세기가 1.5 Tesla에서 3 Tesla, 3 Tesla에서 7 Tesla로 높아지는 시점에서 자기장의 세기 변화에 따른 두부 전체의 SAR와 온도의 변화를 알아보고 위의 결과가 치아 임플란트 사용 여부에 따른 결과의 차이를 알아보기 위해 연구를 시작하게 되었다. 실험은 인체 두부 모델에 1.5 Tesla MRI 장비에서 발생되는 64 MHz RF Pulse 주파수, 3.0 Tesla MRI 장비에서 발생되는 128 MHz RF Pulse 주파수, 7 Tesla MRI 장비에서 발생되는 298 MHz RF Pulse 주파수를 조사하고 위의 실험을 치아 임플란트를 사용하였을 때와 사용하지 않았을 때로 나누어 XFDTD 프로그램을 사용하여 머리 주변의 SAR와 체온의 변화를 각각 실험하였다. 치아 임플란트를 하지 않았을 때보다 치아 임플란트를 하였을 때 SAR값은 7T의 RF Pulse 주파수 256MHz에서 최대 약 5800배의 차이를 나타냈으며 주파수가 증가할수록 치아 임플란트 사용으로 인한 SAR값의 차이는 크게 나타났다. 치아 임플란트를 하지 않았을 때보다 치아 임플란트를 하였을 때 두부전체의 온도변화는 2배에서 최대 4배 가까운 온도 상승을 나타내었다. 또한 RF Pulse 주파수가 증가할수록 SAR값은 증가하지만, 두부 전체의 온도는 감소하였는데 이는 주파수가 증가할수록 파장이 작을수록 인체표면에 흡수되는 양이 많아지기 때문이다. 향후 치아 임플란트 유무와 RF Pulse 주파수의 세기 변화로 인한 이상 반응 요인에 대한 연구를 통해 인체의 생리적 연구와 생화학적 연구 등 인체에 대한 영향과 관련하여 연구가 필요하다고 하겠다.

• 대한전기학회논문지:시스템및제어부문D
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• 제55권2호
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• pp.75-81
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• 2006

The purpose of this paper is to recognize the feature points of ECG and human pulse -which signal shows the electric and physical characteristics of heart respectively- using wavelet transform. Wavelet transform is proper method to analyze a signal in time-frequency domain. In the process of wavelet decomposition and reconstruction of ECG and human pulse signal, we removed the noises of signal and recognized the feature points of signal using some of decomposed component of signal. We obtained the result of recognition rate that is estimated about 95.45$\%$ in case of QRS complex, 98.08$\%$ in case of S point and P point and 92.81$\%$ in case of C point. And we computed diagnosis parameters such as RRI, U-time and E-time.

• 한국방사선학회논문지
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• 제11권3호
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• pp.139-146
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• 2017

Brain MRI 검사에서는 영상을 얻기 위해 RF Pulse를 인체에 조사하게 되는데 이때 조사된 RF Pulse 에너지의 상당부분은 우리 몸에 그대로 흡수되게 되고 이로 인해 인체의 온도가 상승하게 되는데 노출 정도에 따라 인체에 영향을 주게 된다. 동일한 RF Pulse 에너지를 주었더라도 인체에 금속이 삽입되었다면 금속으로 인해 인체의 전도도가 상당히 증가하기 때문에 SAR값이 증가하고 체온도 역시 상승할 것이다. 따라서 치아임플란트를 했을 때와 하지 않았을 때 인체의 머리에 나타나는 SAR값의 변화와 인체의 온도변화는 차이가 있지 않을까라는 의문으로 이번 연구를 시작하게 되었다. 실험은 3.0 Tesla MRI장비에서 발생되는 128MHz RF Pulse 주파수대에서 치아임플란트의 사용 유무에 따른 인체가 받는 SAR와 체온의 변화를 XFDTD 프로그램을 사용하여 인체두부 모델과 치아임플란트 모델을 활성화시켜 실험하였다. MRI장비에서 치아임플란트로 인해 인체두부 모델에 흡수되는 SAR의 평균값과 체온 상승을 살펴 본 결과 모두 증가하고 있음을 알 수 있다. 또한 계산 결과 평균 최대 SAR값과 뇌 부분의 최대 온도 상승이 국제 안전 기준치 이하로 나타났으나, 치아임플란트의 개수 증가에 따라 값이 변할 수 있으므로 그 영향을 간과할 수 없으며, 향후 과제로 치아임플란트 개수와 체적의 증가와 치아임플란트 재질에 따른 SAR, 온도 상승 시뮬레이션이 필요하다.

• 대한한의진단학회지
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• 제10권1호
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• pp.78-97
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• 2006

Background: There was seldom study about method that estimate expertness of pulse diagnosis in 8 Constitution Medicine in spite of the diagnostician importance in 8 Constitution Medicine Objectives: This study is to evaluate diagnostician's consistency and accuracy about pulse diagnosis in 8 Constitution Medicine using Cage R&R study. Methods: The subjects were comprised of 28 volunteers. Among theme, 3 diagnosticians and 10 participants were chosen through questionnaire. Diagnosticians diagnosed participant's Constitution by pulse diagnosis in 8 Constitution Medicine with hiding their eyes by eyepatch. MINITAB statistical software(ver. 13.20) was used for statistical analysis: Attribute Cage R&R study was used to verify the results. Results: 1. In the measurements of consistency, diagnostician b(agreement=80%, Value of k=0.8276)was very good, diagnostician a(agreement=70%, Value of k=0.7465) was good, and diagnostician c(agreement=50%, Value of k=0.5365) was moderate. 2. In the measurements of accuracy, diagnostician b(agreement =70%, Value of t=0.6812) was good, diagnostician a(agreement=60%. Value of t=0.6414) was good, and diagno-stician c(agreement=0%, Value of k=-0.1000) was poor. 3. In cofidence of diagnosis, diagnostician c was 75%, diagnostician a was 70%, and diagnostician b was 64%. Conclusion: The results suggest that diagnostician's consistency and accuracy about pulse diagnosis in 8 Constitution Medicine can be evaluated by Cage R&R study. further study is needed for estimation method of pulse diagnosis in 8 Constitution Medicine.

• 대한한의진단학회지
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• 제10권2호
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• pp.132-150
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• 2006

Objectives : The objective is that we measure and analyze Pulse-Respiration Ratio and Body Composition Analysis to study the correlation between both. Methods : First, after subjects take a rest over 10 minutes, we measure their electrocardiogram and respiration pattern through which we take average peak interval to calculate an average pulse cycle and a respiration cycle. An average respiration cycle divided by an average Pulse Rate gives Pulse-Respiration Ratio. Next, we draw out 22 Body Composition Analysis indicators by using In-Body 720 model. Last, we analyze and take statistics on them by using SPSS 13.0 program. Results : Negative is the correlation between P/R Ratio and Body Composition Analysis indicator like fatness degree, body fat volume, body fat rate, abdominal fatness, BMI. Conclusions : 1. The higher P/R Ratio the more likely to be thin, the lower P/R Ratio the more likely to be fat. 2. We separately analyze P/R Ratio depending on each breathing frequency and pulse frequency to find out that breathing frequency has great influence and that breathing frequency decides the fatness degree. 3. In study on the correlation between P/R Ratio and Body Composition Analysis, fatness degree, in-body fat volume, in-body fat rate, BMI are the related indicators, which shows the connection with the fatness indicators. 4. In study on the correlation between Han-Yeol [寒熱] grade and Body Composition Analysis indicators, the result is that Han[寒] has no connection and that only Yeol[熱] grade has something to do with it, which means the higher heat symptom subjects have, the more basic metabolism volume and muscular build they have.