체내대사를 이용한 핵의학적 검사의 선량률 저감에 관한 연구

강용길,나수경,홍진웅,이귀원,김낙상,Kang, Yong-Gil,Na, Soo-Kyung,Hong, Jin-Woong,Lee, Gui-Won,Kim, Nak-Sang 대한디지털의료영상학회 2012 대한디지털의료영상학회논문지 Vol.14 No.2

The purpose of this study was administered to the body for examination and treatment, high-energy radioactive isotope(F-18, I-131) in vitro discharge experiments. Increasing exposed dose of radiation to health professionals is caused by the increase of PET/CT use and a radioactive isotope. Therefore, the high-energy isotope F-18 and I-131 after administration about using Metabolite excretion was studied. As a results of this study, patients had plenty of fluids for testing and treatment alone administered radiopharmaceuticals can be more than twice as fast excretion induced emissions. Also was able to get a better image space to reduce the dose rate.

이중에너지 X선 흡수법을 이용한 골밀도 측정시 ^99mTc-MDP 투여 전·후 측정값의 변화

강용길,원도연,정홍문,Kang, Yong-Gil,Won, Do-Yeon,Jung, Hong-Moon 한국방사선학회 2017 한국방사선학회 논문지 Vol.11 No.1

최근 동위원소를 이용한 뼈 스캔 (Bone Scan)검사 후 골밀도 (BMD; Bone Mineral Density)검사를 당일검사로 병행한 경우 이로 인한 골밀도 측정값에 오차 발생 가능성이 제기되고 있으나 방사성의약품 표지화합물 투여 후 이중에너지 X선을 이용한 골밀도 측정값 변화에 대한 임상적 자료가 미비하여 핵의학 체내검사 후 당일 골다공증 검사의 측정값에 대한 논란의 소지가 있다. 따라서 동위원소 표지화합물인 $^{99m}Tc-MDP$가 골밀도 측정값에 영향을 미치는지 임상적 측면에서 실험하였다. 실험에 참가한 대상자의 평균 나이는 $35.17{\pm}9.45$세로 실험 대상자 17명 중 대사성 질환과 골밀도 측정에 영향을 줄 수 있는 허리뼈 압박골절 및 몸쪽 넓적다리뼈 골절이 있는 자를 제외한 12명 중 정상 골밀도 T-scores>-1.0의 환자 6명을 대상으로 $^{99m}Tc-MDP$ 투여 전 후 측정값을 분석한 결과 허리뼈에서 전 후 각각 평균 $0.975{\pm}0.084g/cm^2$, $0.966{\pm}0.078g/cm^2$으로 $0.009g/cm^2$ 증가, 우측 몸쪽 넓적다리뼈에서는 전 후 각각 평균 $0.909{\pm}0.078g/cm^2$, $0.913{\pm}0.086g/cm^2$으로 $0.004g/cm^2$ 감소, 좌측 몸쪽 넓적다리뼈에서는 각각 평균 $0.887{\pm}0.099g/cm^2$, $0.881{\pm}0.103g/cm^2$으로 $0.007g/cm^2$의 증가를 보여 몸쪽 넓적다리뼈 보다 허리뼈에서 더 큰 골밀도 변화를 보여주었다. 그러나 허리뼈와 몸쪽 넓적다리뼈 전체에서 전 후 변화 평균은 $0.0038{\pm}0.014g/cm^2$으로 골밀도 측정값에 유의한 영향이 없음을 알 수 있으며, 또한 두 실험간 전체 상관계수는 0.987으로 방사성동위원소 표지화합물인 $^{99m}Tc-MDP$ 투여가 골밀도 측정값에 영향을 주지 않았다. 따라서 140 keV의 감마선 에너지를 방출하는 테크네슘 표지화합물을 이용한 뼈 스캔검사 후 골밀도 측정값에 유의한 영향을 미치지 않음을 확인하였다. 그러나 핵의학적 체내검사와 골다공증 검사를 당일로 검사함으로 인한 환자의 피폭을 고려한다면 시간 간격을 두고 검사를 시행하는 것이 좋을 것으로 사료된다. Measurement of bone marrow measurements may occur if bone marrow examination performed with bone marrow examination (bone marrow examination) and bone density (bone scan) are performed together recently. Thus, it was examined in clinical aspects that $^{99m}Tc-MDP$ compounds were affected by bone mineral density measurements. The average age of the participants in the experiment was $35.17{\pm}9.45$ and the patient fractures of the lumbar vertebrae that could affect the metabolic disease and bone density measurements affecting the metabolic disease of the 17 subjects. 6 patients with normal bone mineral density T-scores>-1.0 in 12 patients were analyzed before and after the administration of $^{99m}Tc-MDP$. In the lumbar spine, the average of $0.975{\pm}0.084g/cm^2$ and $0.966{\pm}0.078g/cm^2$ were increased by $0.009g/cm^2$. respectively In the right proximal femur, mean values were $0.909{\pm}0.078g/cm^2$ and $0.913{\pm}0.086g/cm^2$. In the right proximal thigh, mean values were $0.909{\pm}0.078g/cm^2$ and $0.913{\pm}0.08 g/cm^2$, respectively, which decreased by $0.004g/cm^2$. In the left side proximal femur, mean $0.887{\pm}0.099g/cm^2$ and $0.881{\pm}0.103g/cm^2$, respectively, increased by $0.007g/cm^2$. Therefore, the BMD changes in the lumbar region were larger than that in the proximal thigh. In addition, $^{99m}Tc-MDP$ did not affect the BMD. And a bone scan test using a technetium-labeled compound emitting a gamma-ray energy of 140 keV did not significantly affect bone density measurements. However, if the nuclear medical examination and the osteoporosis test are to be performed together, the examination should be carried out at intervals considering the exposures of the patient.

폐소공포증 환자의 핵의학 영상검사에 관한 연구

강용길,홍진웅,양한준,박성수,이귀원,김긍식,Kang, Yong-Gil,Hong, Jin-Woong,Yang, Han-Joon,Park, Sung-Su,Lee, Gui-Won,Kim, Keung-Sik 대한디지털의료영상학회 2013 대한디지털의료영상학회논문지 Vol.15 No.1

Patients who had claustrophobia tend to feel fear when they were scanned by an MRI, CT, PET-CT, or using a gamma camera scan. In this paper, claustrophobic patients were tested to find effective ways by changing patient's positions. For this paper, PET-CT scan in patients who had claustrophobia were used in the prone position. Prone position helped to maintain stable position and to get a h0igh quality of inspection without failure. Thus, as claustrophobic patients were requested taking prone position, they could feel comfortable. In a confined space, prone position for the claustrophobic patients who had a fear of the PET-CT examination would be expected to reduce the failure rate of inspection.

CPTED 제도화를 위한 법령정비 방안에 관한 연구

강용길(Kang Yong Gil),박민영(Park Min Young) 경찰대학 경찰학연구편집위원회 2014 경찰학연구 Vol.14 No.2

The purpose of this study is to increase the usefulness and feasibility of CPTED through consideration of relevant laws and legislation. To fulfill the goal, this study conducted analysis of the operational status of some relevant laws, and discussion about the necessary of law, law type and the legislative scheme of CPTED. Key findings of this study are following. First, in 2010 and 2013, relevant laws of CPTED went through innovative amendment in terms of the extent to which were applied and implemented. Before 2010, relevant laws regarding house construction and public place safety reflected a limited range of the CPTED theory. Since 2010, the need to crime prevention has increased and concerns about safety-as an example, NPA’s Crime Prevention Planning for the territory, city and park safety- has elevated, which in turn influenced the relevant laws. In 2013, local governments including Gyeonggi-do decided to institutionalize CPTED policies, and carried out trial operations. We confirmed the noticeable increase of financial and administrative supports during this period. We expect that policies and institutions regarding CPTED will receive more attention and show improved performance in the future. Second, we reviewed the need for enactment of laws and municipal ordinances which reflect the characteristics of the CPTED project. We conclude that national law should be enacted to establish standardized criteria for creating uniformity and balanced developments of crime prevention policies among local governments. Furthermore, municipal ordinances also should be enacted to reflect regional characteristics on the planning and processing of projects, and cooperating methods. Consequently, we suggest the form of law or ordinances need to reflect the duality of CPTED project, which are constituted by legal grounds. In addition, enacting national laws should be in a way of enacting new laws rather than amending the existing relevant laws.

Change in the Measured Value at ⁹⁹ᵐTc-MDP Administration before and after Bone Density Measurement using the Dual Energy X-ray Absorptiometry

강용길(Yong Gil Kang),원도연(Do Yeon Won),정홍문(Hong Moon Jung) 한국방사선학회 2017 한국방사선학회 논문지 Vol.11 No.1

최근 동위원소를 이용한 뼈 스캔 (Bone Scan)검사 후 골밀도 (BMD; Bone Mineral Density)검사를 당일검사로 병행한 경우 이로 인한 골밀도 측정값에 오차 발생 가능성이 제기되고 있으나 방사성의약품 표지화합물 투여 후 이중에너지 X선을 이용한 골밀도 측정값 변화에 대한 임상적 자료가 미비하여 핵의학 체내검사 후 당일 골다공증 검사의 측정값에 대한 논란의 소지가 있다. 따라서 동위원소 표지화합물인 ⁹⁹ᵐTc-MDP가 골밀도 측정값에 영향을 미치는지 임상적 측면에서 실험하였다. 실험에 참가한 대상자의 평균 나이는 35.17±9.45세로 실험 대상자 17명 중 대사성 질환과 골밀도 측정에 영향을 줄 수 있는 허리뼈 압박골절 및 몸쪽 넓적다리뼈 골절이 있는 자를 제외한 12명 중 정상 골밀도 T-scores〉-1.0의 환자 6명을 대상으로 ⁹⁹ᵐTc-MDP 투여 전·후 측정값을 분석한 결과 허리뼈에서 전·후 각각 평균 0.975±0.084 g/㎠, 0.966±0.078 g/㎠으로 0.009 g/㎠ 증가, 우측 몸쪽 넓적다리뼈에서는 전·후 각각 평균 0.909±0.078 g/㎠, 0.913±0.086 g/㎠으로 0.004 g/㎠ 감소, 좌측 몸쪽 넓적다리뼈에서는 각각 평균 0.887±0.099 g/㎠, 0.881±0.103 g/㎠으로 0.007g/㎠의 증가를 보여 몸쪽 넓적다리뼈 보다 허리뼈에서 더 큰 골밀도 변화를 보여주었다. 그러나 허리뼈와 몸쪽 넓적다리뼈 전체에서 전·후 변화 평균은 0.0038±0.014 g/㎠으로 골밀도 측정값에 유의한 영향이 없음을 알 수 있으며, 또한 두 실험간 전체 상관계수는 0.987으로 방사성동위원소 표지화합물인 ⁹⁹ᵐTc-MDP 투여가 골밀도 측정값에 영향을 주지 않았다. 따라서 140 keV의 감마선 에너지를 방출하는 테크네슘 표지화합물을 이용한 뼈 스캔검사 후 골밀도 측정값에 유의한 영향을 미치지 않음을 확인하였다. 그러나 핵의학적 체내검사와 골다공증 검사를 당일로 검사함으로 인한 환자의 피폭을 고려한다면 시간 간격을 두고 검사를 시행하는 것이 좋을 것으로 사료된다. Measurement of bone marrow measurements may occur if bone marrow examination performed with bone marrow examination (bone marrow examination) and bone density (bone scan) are performed together recently. Thus, it was examined in clinical aspects that ⁹⁹ᵐTc-MDP compounds were affected by bone mineral density measurements. The average age of the participants in the experiment was 35.17±9.45 and the patient fractures of the lumbar vertebrae that could affect the metabolic disease and bone density measurements affecting the metabolic disease of the 17 subjects. 6 patients with normal bone mineral density T-scores>-1.0 in 12 patients were analyzed before and after the administration of ⁹⁹ᵐTc-MDP. In the lumbar spine, the average of 0.975±0.084 g/㎠ and 0.966±0.078 g/㎠ were increased by 0.009 g/㎠. respectively In the right proximal femur, mean values were 0.909±0.078 g/㎠ and 0.913±0.086 g/㎠. In the right proximal thigh, mean values were 0.909±0.078 g/㎠ and 0.913±0.086 g/㎠, respectively, which decreased by 0.004 g/㎠. In the left side proximal femur, mean 0.887±0.099 g/㎠ and 0.881±0.103 g/㎠, respectively, increased by 0.007 g/㎠. Therefore, the BMD changes in the lumbar region were larger than that in the proximal thigh. In addition, ⁹⁹ᵐTc-MDP did not affect the BMD. And a bone scan test using a technetium-labeled compound emitting a gamma-ray energy of 140 keV did not significantly affect bone density measurements. However, if the nuclear medical examination and the osteoporosis test are to be performed together, the examination should be carried out at intervals considering the exposures of the patient.

HIL 물질과 EIL 물질의 두께 비에 따른 OLEDs의 특성 개선

강용길(Yong-Gil Kang),김승태(Seung-Tae Kim),신종열(Jong-Yeol Shin),이종용(Jong-Yong Lee),박희두(Hee-Doo Park),홍진웅(Jin-Woong Hong) 대한전기학회 2013 대한전기학회 학술대회 논문집 Vol.2013 No.7

침입절도범의 행동분석을 통한 침입절도 예방대책에 관한 연구

강용길(Kang Yong gil),조준택(Cho Jun Taek) 경찰대학 경찰학연구편집위원회 2010 경찰학연구 Vol.10 No.1

In this context, to research for implications about burglary prevention measures based on situational crime prevention theory, we analyze formal crime statistics for 3 years made by National Police Agency and have in-depth interview with a couple of investigators, examined several interrogatories of burglary suspects. So we can learn about the objective and subjective aspect of criminal behavior and tips for improving burglary prevention measures including CPTED principle-based space management and CCTV system etc. This context has a significance for synthesizing various research methods and precedent researchs. As a result from analysis, criminals are generally searching for empty houses as a target of their crime when there is nobody. The characteristics of burglary-vulnerable areas are summarized by a lack of management for semi-public space, low security level like unlocked doors and windows and detached house or villa rather than apartment. The main break-in routes are unlocked windows and doors, porch, outdoor gas pipe. A security window doesn't matter for criminal because they are easily taken off by various tools. And CCTV is really not a problem for criminals because they can easily avoid from CCTV by using a cap or mask. So, we can draw some implications for burglary prevention measures based on analysis results, We need "visible burglary prevention measures" so that criminal give up crime before execution, effective prevention measures in crime-searching areas, target-hardening to cope with crime tools and making effects as if there are a couple of people in house. As a matter of CCTV, it must be improved with active and aggressive functions like alert signs, recording and keeping traces of suspects' behavior to prevent crime more effectively. In conclusion, this study suggest the factors related to crime prevention measures needed to improved.

공원의 CPTED 실행전략에 관한 연구

강용길(Kang Yong Gil),박경래(Park Kyung Rae) 경찰대학 경찰학연구편집위원회 2011 경찰학연구 Vol.11 No.4

The purpose of this study is to develop Crime Prevention Implementation Strategy in the park, to make the park a safe space as increased use of residents. This study searches the development of CPTED Implementation Strategy through examination of literatures and studies in the past. And for seeking the needs of crime prevention and the direction of implementation strategy, This study collects and analyzes data about the korean parks situations and criminal statistics on the quantitative - methods. Finally, based on the park crime analysis and the natural, organizational, and mechanical strategies presented by Crowe(2000), this study suggests CPTED strategies for park crime prevention, as follows. First, the Surveillance Strategy selects the park site taking into account the surrounding environment of the park, secures the visibility through planting of the landscape with night lighting, and secures an open spaces in the park. In addition, It installs and operates CCTVs around the vulnerable places and times. CCTV monitoring is desirable to be included into the existing integrated center model. Second, the Access Control places that park's walkways and public areas with high frequency apart from the vulnerable places, and makes fences in the Control Area by planting trees or using the rope, artificial structures such as wood. And also, It establishes the rules for access control and installs the guide board. Attaching sensors on the fences can increase the control effects. Third, the Territorial Strengthen sets boundaries around the contolled areas of the park and the shelter, separates spaces into compartments according to the each spaces' using purposes. Fourth, the Promoting Activities considers the improvements of the design of the park facilities and various facilities installation, and work-study programs and cultural programs developments and operation for increasing users' participation and emotional stability. In particular, developing Music-Broadcasting applying the effects of music therapy is expected to suppress criminal psychologies and opportunities. Fifth, the Maintenance and Management estimates for the support activities of crime prevention, the operation of park management department, and the effectiveness of crime prevention, objectively and periodically.

저소득층 주거지역 셉테드사업의 범죄예방효과에 관한 연구

강용길(Kang Yong gil),김영수(Kim Young soo),노재호(Noh Jae ho) 한국셉테드학회 2018 한국셉테드학회지 Vol.9 No.1

이 연구의 목적은 첫째, 저소득층 주거지역에서 범죄예방정책의 일환으로 시행되고 있는 범죄예방환경설계 사업에 대한 효과성 분석을 통해 범죄예방이라는 목표가 실제로 달성되고 있는가를 살펴보고자 한다. 둘째, 효과성 분석에 따른 사업성과의 개선 및 유지 방안을 모색하고자 한다. 연구방법은 ‘범죄예방환경설계’와 관련된 이론과 진행 과정에 관한 문헌조사, ‘저소득층 주거지역’의 범죄발생 현황과 추세를 살펴보기 위해 사업시행 지역을 포함하고 있는 지역 경찰 관서(지구대/파출소) 단위의 범죄발생현황 및 112신고자료 등을 수집하여 분석하였다. 셋째, 자료 분석은 범죄 및 무질서의 증감추세를 파악하기 위해 양적 분석을 실시하였고, 양적 분석방법은 빈도분석과 기술통계 분석방법을 사용하였다. 마지막으로 각 범죄유형별 효과성을 검증한 후 사업의 목표와 방향에 대한 시사점을 도출하고, 향후 개선을 위한 정책 방향들을 제언하였다. 연구결과 사례지역 전반에 걸쳐 절도범죄의 경우 사업 시행 전·후에 발생이 감소되는 긍정적인 효과를 발견하였고, 사례지역별로 범죄유형에 따른 감소효과는 절도 > 성폭력 > 폭력 > 강도 > 살인범죄의 순서로 ‘범죄예방환경설계’ 사업의 시행이 범죄발생에 긍정적인 영향을 준 것으로 확인되었다. 무질서의 경우 5대 범죄와 비교했을 때 긍정적인 효과의 비율이 낮았으나 지역별 무질서 항목에 따른 효과에서 차이가 있음을 확인하였다. The purpose of this study is to examine whether the goal of crime prevention is actually achieved through the effectiveness analysis CPTED project, which is being implemented as part of the crime prevention policy in low - income residential areas. Second, we want to find out how to improve and maintain the business performance according to the effectiveness analysis. In order to look into the theories and processes related to crime prevention environmental design and to investigate the trends of crime occurrence in low - income residential areas , the crime statistics and 112 report data were collected and analyzed. And quantitative analysis was conducted to analyze the trend of the increase and decrease of crime and disorder. The quantitative analysis methodology being used are frequency analysis and descriptive statistics method. Finally, after verifying the effectiveness according to each type of crime, the implications for the goals and direction of the project are derived, and policy suggestions for future improvement are suggested. The results of the study showed that the effect of reducing the incidence of crime before and after the implementation of the project across the case areas was found to have a positive effect in the case of the theft crime and the decrease effect by the crime type in each case region was the order of theft> sexual violence> violence. It was confirmed that the implementation of the crime prevention environmental design project positively affected crime occurrence. In the case of disorder, the proportion of positive effects was low compared to the five major crimes, but it was confirmed that there was a difference in the effects of disordered items by region.

에폭시 나노컴퍼지트 체적 고유저항의 온도 의존성

김창훈,이영상,강용길,박희두,신종열,홍진웅,Kim, Chang-Hoon,Lee, Young-Sang,Kang, Yong-Gil,Park, Hee-Doo,Shin, Jong-Yeol,Hong, Jin-Woong 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.10

This research shows the electrical characteristic using excellent epoxy nano-composite of MgO 5.0 wt% and $SiO_2$ 0.4 wt% in mechanical strength test depending on nano-additive. First of all, volume resistance depending on nano-additive and temperature using high resistance meter (HP. 4329A) by increasing 10, 100, 1,000 V of applying voltage was measured. Moreover, temperature range of $25{\sim}120^{\circ}C$ with virgin sample was tested using TO-9B oven by Ando Company. The result showed that virgin and the samples added with MgO and $SiO_2$ had similar value of volume resistance in low temperature and low electric field region and reduced with slow slope. The nano-composite's volume resistance of sample added with MgO and $SiO_2$ had higher value than virgin sample's volume resistance in high temperature region more than $80^{\circ}C$. Moreover, the slope has steeply reduced. The volume resistance of sample added with MgO 5.0 wt% was $8.38{\times}10^{13}\;{\Omega}{\cdot}cm$ and it was 6.8 times more than virgin sample in high temperature at $120^{\circ}C$. The insulation characteristics were constant although filler has changed in low temperature region. But, in high temperature region, the value of volume resistance of sample with MgO 5.0 wt% was 7.6 times more than the virgin sample's volume resistance.