‘한국 실어증 감별진단 검사’의 공인타당도

이건재(Kun Jai Lee),이찬종(Chan-Jong Lee),김정환(Jung Hwan Kim),정성미(Sung Mi Jung),황수진(Soojin Hwang) 한국언어청각임상학회 2009 Communication Sciences and Disorders Vol.14 No.1

배경 및 목적: 본 연구는 표준화 과정을 거쳐서 개발된 ‘한국 실어증 감별진단 검사(Korean Test for Differential Diagnosis of Aphasia: KTDDA, 이하 KTDDA)’에 대한 공인타당도를 검증하는 것을 목적으로 한다. 방법: 공인타당도 검증을 위해 성인 언어장애 환자 10명을대상으로 최근에 개발된 KTDDA와 임상현장에서 많이 사용되고 있는 ‘파라다이스․한국판-웨스턴 실어증검사(Paradise․Korean version- Western Aphasia Battery: P․K-WAB,이하 P․K- WAB)’를 실시하였다. 결과: 분석 결과 KTDDA의 중증도와 P․K-WAB의 실어증 지수(Aphasia Qutient: AQ) 사이의 상관계수 0.863 (p < .01), 중증도와 언어지수(Language Quotient: LQ)의 상관계수 r = .980 (p < .01)로 유의미한 상관을 보였다. 각 하부 검사 사이에서도 따라말하기(r = .955, p < .01), 이름대기(r = .942, p < .01), 유창성(r = .807, p< .01), 읽기(r = .793, p < .01), 쓰기(r = .780, p < .01), 청각적이해력(r = .705, p < .05)에서도유의미한 상관을 보였다. 논의 및 결론: 본 연구의 결과 KTDDA가 실어증 환자를 진단하는공식적인 검사도구임을 재확인할 수 있었고, 기존의 P․K-WAB과의 공인타당도의 객관적 검증을 통해서 향후 실어증 진단에 유용하게 활용할 수 있을 것이다. Background & Objectives: The purpose of this study was to demonstrate the concurrent validity of the standardized “Korean Test for the Differential Diagnosis of Aphasia (KTDDA).” Methods: For concurrent validity, 10 aphasic patients were evaluated with the recently developed KTDDA and the Paradise․Korean type-Western Aphasia Battery (P․K-WAB). Results: The correlation between the severity of the KTDDA and the aphasia quotient (AQ) of the K-WAB was significant (r = .863, p < .01). The correlation between the severity of the KTDDA and the language quotient (LQ) of the K-WAB was also significant (r = .980, p < .01). The repetition subtest (r = .955, p < .01), the naming subtest (r = .942, p < .01), the fluency subtest (r = .807, p < .01), the reading subtest (r = .793, p < .01), the writing subtest (r = .780, p < .01), and the auditory comprehension subtest (r = .705, p < .05) between the KTDDA and the K-WAB also had statistically significant correlations. Discussion & Conclusion: We determined that the KTDDA is the official standardized tool in the assessment of aphasia, and its clinical usefulness is based on its concurrent validity with the K-WAB.

A Study on the Method for the Removal of Radioactive Corrosion Produce Using Permanent and Electric Magnets

공태영,송민철,이건재,Kong Tae-Young,Song Min-Chul,Lee Kun-Jai Korean Radioactive Waste Society 2005 방사성폐기물학회지 Vol.3 No.2

The removal of radioactive corrosion products from the reactor coolant through a magnetic filter system is one of the many approaches being investigated as a means to reduce radiation sources and exposures to the operational and maintenance personnel in a nuclear power plant. Many research activities in water chemistry, therefore, have been performed to provide a filtration system with high reliability and feasibility and are still in process. In this study, it was devised the magnetic filter system with permanent and electric magnets to remove the corrosion products in the coolant stream taking an advantage of the magnetic properties of corrosion particles. Permanent magnets were used for separation of corrosion products and electric magnets were utilized for flocculation of colloidal particles to increase in their size. Experiments using only permanent magnets, in the previous study, displayed the satisfactory outcome of filtering corrosion products and indicated that the removal efficiency was more than 90 $\%$ for above 5 $\mu$m particles. Experiments using electric magnets also showed the good performance of flocculation without chemical agents and exhibited that most corrosion particles were flocculated into larger aggregates about 5 $\mu$m and over in diameter. It is, thus, expected that the magnetic filter system with the arrangement of permanent and electric magnets will be an effective way for the removal of radioactive corrosion products with considerably high removal efficiency.

원자력 발전소 배관재를 이용한 고온 수화학 조건에서의 방사화 부식생성물 모사에 관한 연구

김상현,김인섭,이건재,Kim Sang Hyun,Kim In Sup,Lee Kun Jai 한국방사성폐기물학회 2005 방사성폐기물학회지 Vol.3 No.1

High temperature - high pressure apparatus was developed to simulate nickel fewite corrosion products which were main compositions of the radioactive crud in the nuclear power plant. Corrosion product similar to the crud was obtained by a tube accumulator system. Nickel alloy (Inconel 690) and carbon steel (SA106 Gr. C) were corroded at 270 $\^{circ}C$ in the corrosion product generator. Ni ions and Fe ions dissolved by corrosion reaction were able to be transported to the accumulator because the crud generation mechanism was the solubility change with temperature. To evaluate the properties of simulated corrosion products, scanning electron microscope (SEM) observation and EDAX analysis were performed. SEM observation of corrosion product showed the needlelike or crystal structure of oxide depending on precipitating location. The crystal oxide was the nickel ferrite, which was similar to the crud in nuclear power plants.

연구발표 진행표 : A 발표장 : 방사선적 환경영향 인자 개발의 현황과 타당성 연구

이영일(Young Eal Lee),이건재(Kun Jai Lee) 한국전과정평가학회 1999 한국전과정평가학회 정기총회 연구논문집 Vol.1999 No.0

Absolute $^{56}Mn$ Activity Measurement by $4{\pi}{\beta}-{\gamma}$ Conincidence Counting Technique

황선태,최길웅,오필제,이경주,이건재,Hwang, Sun-Tae,Choi, Kil-Oung,Oh, Pil-Jae,Lee, Kyung-Ju,Lee, Kun-Jai Korean Association for Radiation Protection 1987 방사선방어학회지 Vol.12 No.2

In order to determine the $^{56}Mn\;{\gamma}$-detection efficiency of a $MnSO_4$ bath system, it is essential to do the absolute activity measurement of $^{56}Mn$ solution. For the fabrication of $^{56}Mn$ samples, a 13.718 mg of $^{56}Mn$ metal flake with 99.99% purity was irradiated for 12 minutes at the thermal neutron field of about $10^{13}n/cm^2s$ of flux density. The neutron activated $^{56}Mn$ metal sample was dissolved in 50 ml of 0.1 N-HCl solution. The $^{56}Mn$ samples were fabricated by using the dissolved stock solution and the activity of each of them was measured by the $4{\pi}{\beta}-{\gamma}$ coincidence counting technique. The obtained result was 408.070 kBq/mg with total uncertainty of 0.366% at reference date, 0 h on October 15, 1987. 황산망간 용액조장치의 $^{56}Mn\;{\gamma}$선 검출효율을 결정하는데 $^{56}Mn$용액의 방사능을 절대측정하는 것은 필수적이다 $^{56}Mn$시료를 제작하기 위하여 99.99%의 순도를 갖는 Mn금속조각 13.718mg되는 시료를 한국에너지연구소 TRIGA MARK-II 원자로의 중성자선속이 약 $10^{13}n/cm^2{\cdot}s$되는 열중성자장에서 12분간 조사시켰다. 중성자 방사화된 $^{56}Mn$금속시료를 0.1N-HCI 용액 50ml 용해시켜서 $^{56}Mn$시료를 제작하여 $4{\pi}{\beta}-{\gamma}$ 동시계수기술로 방사능을 측정한 결과 불확도 0.366%를 갖는 값으로서 1987년 10월 15일 0 시를 기준하여 408.070kBq/mg을 얻었다.

견부 유창성 관절낭염 환자에서의 회전근개 파열

김정환 ( Jung Hwan Kim ),이건재 ( Kun Jai Lee ) 대한스포츠의학회 2010 대한스포츠의학회지 Vol.28 No.2

To examine the association between adhesive capsulitis of shoulders and rotator cuff tears determined by ultrasonographic findings. Total 49 consecutive patients were diagnosed as adhesive capsulitis by physical examination and simple radiologic evaluation. Shoulder ultrasonographies were done for them. For 20 subjects, the sensitivity and the specificity of the empty can test for supraspinatus tear were measured. Among 49 subjects, 49.0% (n=24) had rotator cuff tears. The empty can test exhibited the sensitivity of 55.6% and the specificity of 81.8% for the supraspinatus tear. The physical examination of empty can test was not sufficient for the screening of supraspinatus tear. So the radiologic evaluation, for example ultrasonography, may be needed in the diagnosis of rotator cuff tear in adhesive capsulitis patients.

하지의 동심성 및 신장성 근력과 최대산소섭취량 사이의 관계

김정환 ( Jung Hwan Kim ),정선근 ( Sun Gun Chung ),한태륜 ( Tai Ryoon Han ),오병모 ( Byung Mo Oh ),이건재 ( Kun Jai Lee ),이시욱 ( Shi Uk Lee ) 대한스포츠의학회 2005 대한스포츠의학회지 Vol.23 No.2

마코프 모델을 이용한 방사선 방어의 최적화

정진엽,이건재 대한방사선 방어학회 1989 방사선방어학회지 Vol.14 No.2

방사선 방어를 위한 방안을 결정하는데 도움을 주기 위해서는 각종 방사선 방어 최적화 방안들 사이에 정량적인 비교를 할 수 있는 해석적 방법이 필요하다. 본 논문에서는 발전소에서 행해지고 있는 검사, 시험 및 보수가 방사선 방어에 미치는 영향을 평가할 수 있는 동적 마코프 모델의 개념을 도입하였다. 마코프 모델의 응용을 다루기 위해 예로 든 증기발생기 전열과 파열에서는 고리 2호기와 외국의 자표에 기초해 비용과 피폭 선량을 줄이기 위한 증기발생기의 최적 검사주기를 산출하였으며 그 결과 피폭 선량은 비용에 비해 그 기여도가 매우 낮은 것으로 나타났다. 예제 계산에 이용된 마코프 모델은 자료를 좀 더 보강함으로써 국내 발전소에도 쉽게 적용할 수 있으며 방사선 방어의 최적화를 위한 여러 가지 대안의 비교 우위를 평가하는 데에도 이용 할 수 있다. An analytic method for quantitative comparisions between the alternatives for radiation protection optimization is required to aid the decision making process. This paper introduces the dynamic Markov model to evaluate the effect of inservice inspection, testing, and repair activities of the plant on radiation protection. In the example to put the Markov model into practice, the steam generator inspection intervals which minimize expected cost and total exposure dose were determined using the data for Kori-2 unit and foreign plants. The results show that the effect of the radiation exposure on the steam generator inspection interval is determined by the cost rather than the radiation exposure. The Markov model used in the example can be applied easily to the domestic NPPs by replenishing the data and also can be used in evaluating the comparative priority between various alternatives for radiation protection optimization.

Absolute ??Activity Measurement by 4π β-γConincidence Counting Technique

Lee, Kyung-Ju,Oh, Pil-Jae,Hwang, Sun-Tae,최길웅,이건재 대한방사선 방어학회 1987 방사선방어학회지 Vol.12 No.2

황상망간 용액조장치의 56Mn γ선 검출효율을 결정하는데 56Mn용액의 방사능을 절대측정하는 것은 필수적이다. 56Mn시료를 제작하기 위하여 99.99%의 순도를 갖는 Mn금속조각 13.718mg되는 시료를 한국에너지연구소 TRIGA MARK-Ⅲ 원자로의 중성자선속이 약 10 n/㎤·s되는 열중성자장에서 12분간 조사시켰다. 중성자 방사화된 56Mn금속시료를 0.1N-HCl 용액 50㎖에 용해시켜서 56Mn시료를 제작하여 4πβ-γ동시계수기술로 방사능을 측정한 결과 불확도 0.366%를 갖는 값으로서 1987년 10월 15일 0시를 기준하여 408.070kBq/mg을 얻었다. In order to determine the 56Mn γ-detection efficiency of a MnS04 bath system, it is essential to do the absolute activity measurement of 56Mn solution. For the fabrication of 56Mn samples, a 13.718 mg of 55Mn metal flake with 99.99% purity was irradiated for 12 minutes at the thermal neutron field of about 10 13 n/cm2s of flux density. The neutron activated 56Mn metal sample was dissolved in 50 ml of 0.1 N-HC1 solution. The 56Mn samples were fabricated by using the dissolved stock solution and the activity of each of them was measured by the 4πβ-γ coincidence counting technique. The obtained result was 408.070 kBq/mg with total uncertainty of 0.366% at reference date, 0 h on October 15. 1987.

강원 영서북부지역 장애인의 의료재활서비스 요구

이건재,김정환 한국장애인재활협회 2009 재활복지 Vol.13 No.3

Through the survey for the local participants of 'Day of the Disabled' ceremony in the Gangwon northwestern area, we investigated about the management of disabilities and the needs of the disabled for medical rehabilitation services. More than half of the disabled could not afford to manage disabilities, and more than half of the disabled complaint of unbearable pain. The group of poor management of disabilities has higher ratio of unbearable pain(Chi-square=62.183, p<0.001). So we deduced that the medical rehabilitation services were needed. Chunchon city, in which more rehabilitation units were located than in other provincial areas, had less ratio of poor disability management and unbearable pain than other areas. Most of the disabled wanted direct medical services of medical rehabilitation rather than indirect services like educations. Accounting these findings the needs for medical rehabilitation were identified and the examples of methods for enough provision of medical rehabilitation services were further discussed. 본 연구에서 강원영서북부지역 장애인의 날 행사에 참여한 장애인을 대상으로 설문조사를 통하여 장애 관리 및 의료재활서비스 요구에 대한 설문조사를 하였다. 장애에 대해서 제대로 관리 받지 못한다고 장애인 스스로 판단한 경우가 많았고, 통증이 참기 힘들거나 매우 참기 힘든 정도인 경우가 전체의 반수 이상이었으며, 장애에 대한 관리를 제대로 받지 못한 경우에 통증이 참기 힘든 경우가 통증이 보통 이하인 경우에 비해 많았던 점(카이제곱=62.183, p <0.001)을 통해 의료재활서비스가 필요함을 추론할 수 있었다. 지역을 고려하였을 때, 재활전문의료기관이 상대적으로 많은 춘천시는 타지역에 비해 장애인이 장애 관리 소홀(카이제곱=21.752, p <0.001)이나 심한 통증을 호소(카이제곱=33.255, p <0.001)하는 비율이 낮았다. 실제 장애인들이 원하는 서비스 중에도 교육 등 간접서비스보다는 직접적 의료재활서비스를 더 원하였다. 이를 통해 의료재활서비스의 필요성을 확인할 수 있었고 이에 대한 확충방안에 대한 예시를 논하였다.