http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
석면관련 폐질환의 진단에 있어서 흉부고해상도전산화단층촬영검사(HRCT)의 유용성
이현재,손지언,,홍영습,,이영일,예병진,유창훈,정갑열,김상훈,임형준,장은철,김정만,김준연 大韓産業醫學會 2006 대한직업환경의학회지 Vol.18 No.2
목적: 석면에 노출된 근로자에서 석면관련 폐질환의 양상을 분석하고 진단에 있어 HRCT의 유용성을 연구하여 석면에 대한 의학적 감시프로그램의 개발에 기여하고자 하였다. 방법: 석면에 직접 노출되는 작업자 68명과 간접 노출되는 작업자 94명 등 총 162명에 대해 OSHA 석면 표준, 의학적 감시 프로그램에 따라 단순 흉부방사선검사, 폐활량검사 및 우리나라 실정에 맞게 일부 수정한 의학적 설문지를 통해 면접조사의 방식으로 환자에 관한 정보를 수집하였으며, 자료의 신뢰성을 확보하기 위하여 면접조사는 1달 이상의 기간을 두고 2차례에 걸쳐 실시된 후 확인, 수정하였다. 또한, 석면관련 폐질환을 확진하기 위하여 HRCT를 추가적으로 실시하였다. 결과: HRCT결과 석면관련 폐질환의 유병율은 162명의 근로자중 17명으로 10.5%였는데, 직접 노출군에서 10명 (14.7%), 간접 노출군에서 7명 (7.4%)이었다. HRCT와 비교할 때 단순 흉부방사선검사의 민감도와 특이도는 각각 70.6%와 98.6%이었고, 양성 예측도와 음성 예측도는 각각 85.7%와 96.6%으로, HRCT는 단순흉부방사선검사에 비해 민감도가 높아 초기 석면관련 폐질환을 진단하는데 효과적이었다. 석면관련 폐질환의 진단에 있어 HRCT와 폐활량검사 사이에 유의한 관련성이 관찰되었다. HRCT 결과 석면관련 폐질환의 유무와 의학적 설문조사 결과의 빈도분석을 실시한 결과, 유의한 변수는 작업기간, 흡연량, 호흡기질환의 과거력, 기침, 호흡곤란이었다. 결론: HRCT는 석면관련 폐질환의 진단에 있어 단순 흉부방사선검사와 비교하여 민감도가 높아 초기 진단에 유용하므로 단순 흉부방사선선검사 결과 석면관련 폐질환소견을 보일 때뿐만 아니라, 정상소견을 보이더라도 폐활량 검사결과와 근무력, 흡연력, 호흡기질환의 과거력, 기침, 호흡곤란 등의 호흡기 증상을 참고하여 HRCT검사를 고려해야 한다. 또한, 본 연구에서 관련성이 없었던 요인들에 대해서도 향후 연관성을 규명하는 광범위한 전향적 연구가 필요하다. Objectives: This study was carried out to improve the medical surveillance program of workers exposed to asbestos by examining the usefulness of High Resolution Computed Tomography (HRCT) in the diagnosis of asbestos-related lung disease. Methods: The study subjects comprised 162 workers in a ship-repairing yard, 68 of whom had been directly exposed to asbestos and 94 indirectly exposed. The 'Occupational Safety & Health Administration (OSHA) asbestos standard, medical surveilance program' and HRCT were conducted to analyze the aspects of the asbestos-related lung disease. The OSHA asbestos standard, medical surveilance program consists of simple chest x-ray, spirometry and medical questionnarie. Results: Seventeen (10.5%) of the 162 subjects, 10 (14.7%) directly exposed and 7 (7.4%) indirectly exposed, revealed asbestos-related lung disease on HRCT. The sensitivity and specificity of simple chest x-ray for asbestos-related lung disease were 70.6% and 98.6%, and the positive and negative predictive values were 85.7% and 96.6% respectively, as compared with HRCT, HRCT was an effective diagnostic tool especially to detect early asbestos-related lung disease. The study results indicated a relative significant association between the results of spirometry and HRCT. The variables significantly associated with asbestos-related lung disease on HRCT were work duration, smoking history (pack-years), past history of respiratory disease, cough and dyspnea. Conclusions: In the diagnosis of asbestos-related lung disease, HRCT should be considered not only for workers with positive findings on simple chest x-ray, but also workers with specific findings on spirometry, occupational history, smoking history, and past history of respiratory disease, or with respiratory symptoms such as cough and dyspnea.
문영래,유재원,심형준,박준광 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.1
Purpose : The purpose of this study is to evaluate the usefulness of arthroscopic drainage in the management of septic arthritis of the shoulder. Materials and methods : The cases of nine septic glenohumeral joints were evaluated. Each patient was treated by arthroscopic irrigation and necrotic synovectomy, combined with parenteral antibiotics. Result In five of nine shoulders in which treatment was begun four weeks or less after symptoms appeared, a satisfactory functional outcome was obtained, while four patients who were treated after a delay of more than four weeks had poor results. Conclusion : The most significant factors leading to poor results of treatment were delay in instituting treatment, virulence of the infecting organism, and a serious process of underlying disease. Arthroscopic drainage is a valuable procedure for the treatment of the septic arthritis of shoulder. Arthroscopic drainage is a method that has proved effective, with minimal morbidity, in attempts to cure septic arthritis of the shoulder.
You, Jae-Hyoung,Yoo, Sang-Im Elsevier 2019 Journal of magnetism and magnetic materials Vol.471 No.-
<P><B>Abstract</B></P> <P>We report the magnetic properties of Zn-substituted barium Y-type hexaferrites with the Zn substituent, <I>x</I>, ranging from 0.5 to 2.0 in Ba<SUB>2</SUB>Zn<I> <SUB>x</SUB> </I>Fe<SUB>2−</SUB> <I> <SUB>x</SUB> </I>Fe<SUB>12</SUB>O<SUB>22</SUB>. After high-temperature annealing and subsequent furnace-cooling, single-phase samples with <I>x</I> = 0.5, 1.0, 1.5 could be successfully prepared in a reduced oxygen atmosphere (<I>P</I>O<SUB>2</SUB> = 10<SUP>−3</SUP> atm) while the single-phase was obtainable only from the sample with <I>x</I> = 2.0 in air. With increasing <I>x</I> from 0.5 to 2.0, both <I>a</I> lattice parameters (≈0.32%) and unit cell volumes (<I>V<SUB>cell</SUB> </I>) (≈0.51%) were linearly increased but <I>c</I> lattice parameters (≈0.12%) were linearly decreased, which is in good agreement with the Vegard’s law, indirectly supporting a successful formation of Ba<SUB>2</SUB>Zn<I> <SUB>x</SUB> </I>Fe<SUB>2−</SUB> <I> <SUB>x</SUB> </I>Fe<SUB>12</SUB>O<SUB>22</SUB>-type solid solutions. The saturation magnetization (<I>M<SUB>s</SUB> </I>) was first increased with increasing <I>x</I> from 0.5 to 1.0 and then decreased up to <I>x</I> = 2.0. Thus, the highest <I>M<SUB>s</SUB> </I> value of 44.7 emu/g was obtainable from the sample of <I>x</I> = 1.0 sintered at 1300 °C for 2 h in the low <I>P</I>O<SUB>2</SUB> of 10<SUP>−3</SUP> atm. These results are attributable to the site preference of Zn<SUP>2+</SUP> ions for the tetrahedral sites of Y-type hexaferrites.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Zn-substituted Y-type hexaferrites of Ba<SUB>2</SUB>Zn<I> <SUB>x</SUB> </I>Fe<SUB>2−</SUB> <I> <SUB>x</SUB> </I>Fe<SUB>12</SUB>O<SUB>22</SUB> were successfully prepared. </LI> <LI> Ba<SUB>2</SUB>Zn<I> <SUB>x</SUB> </I>Fe<SUB>2−</SUB> <I> <SUB>x</SUB> </I>Fe<SUB>12</SUB>O<SUB>22</SUB> of <I>x</I> = 0.5, 1.0 and 1.5 were obtained by sintering in the low <I>P</I>O<SUB>2</SUB>. </LI> <LI> The saturation magnetization (<I>M<SUB>s</SUB> </I>) first increased up to <I>x</I> = 1.0 and then decreased. </LI> </UL> </P>