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<SUP>18</SUP>F-FDG PET-CT에서 진단된 갑상선 우연종의 악성종양 발견율 및 특징
이강영,고건<SUP>1<.SUP>,김선국<SUP>1<.SUP>,고진철<SUP>1<.SUP>,김행수,최상용,박신희,박용휘<SUP>2<.SUP>,Kang Young Rhee,Gun Koh,<SUP>1<.SUP>,Sun Kuk Kim,<SUP>1<.SUP>,Jin Chul Koh,<SUP>1<.SUP>,Haeng Soo Kim,Sang Yong Choi,Shin 대한갑상선-내분비외과학회 2008 The Koreran journal of Endocrine Surgery Vol.8 No.1
<B>Purpose: </B>PET-CT is often used to differentiate benign or malignant thyroid incidentalomas. In this retrospective study, we evaluated whether the <SUP>18</SUP>F-FDG uptake pattern and PET-CT findings improved accuracy over the standardized uptake value (SUV). <B>Methods:</B> <SUP>18</SUP>F-FDG PET-CT was performed on 2,178 subjects from August, 2004, to October, 2007, in Sung-ae Hospital. PET-CT was performed on 806 patients (37%) with suspected or known nonthyroidal cancer and 1,372 healthy subjects (63%) without a previous history of cancer. We investigated the clinical characteristics of patients, history, standardized uptake value (SUV), ultrasonography, and hormone levels in blood. Thyroidal cancer was confirmed by ultrasonography-guided fine needle aspiration and pathology after thyroid operation. <B>Results:</B> The prevalence of focal thyroid lesions on PET-CT was 8.8% (191/2178). Thyroid cancer confirmation was 7.9% (15/191). The maximum SUV of malignant thyroid lesions were significantly higher than that of benign lesions (7.00±3.08 vs. 4.49±1.84, P<0.001). <B>Conclusion:</B> PET-CT image interpretation that includes 18F-FDG uptake and SUV is better than PET-CT alone for differentiating benign and malignant lesions. Thyroid cancer risk increases as SUVmax levels increase. <B>(Ko</B><B></B><B>rean J Endocrine Surg 2008;8:38-42)</B>
유한 효과에 의한 Gadolinium 박막의 Curie온도 이동
Rhee, Il-Su,Chu, Gyo-Jin,Lee, Eui-Wan,Lee, Sang-Yun,Lee, Chong-Yong,Kim, Yaung-Soo,Kim, Dong-Lak,Ri, H.C. 한국재료학회 1994 한국재료학회지 Vol.4 No.6
자화도를 측정함으로써 gadolinium박막의 강자성에서 상자성으로의 전이온도를 결정했다. 박막의 전이온도는 박막의 두께가 얇아짐에 따라 점점 더 bulk계의 전이온도보다 낮아지는 것이 관측되었으며 이 현상은 박막계의 유한성에 의해 일어나는 현상으로 알려져 있다. 우리는 이 결과를 유한효과 및 유한 축척이론에 근거하여 설명하였다. We determine the Curie temperature of thin gadolinium films by the measurement of magnetization as a function of temperature. From these data, we observe the Curie temperature shift in films from the bulk value, and also see the systematic behavior of this shift with thicknesses of films, that is, the larger the shift is, the thinner the film is. In this paper, we analyze and explain these results in light of finite-size scaling theory.
Rhee, Sang Youl,Chon, Suk,Kwon, Mi Kwang,Park, Ie Byung,Ahn, Kyu Jeung,Kim, In Ju,Kim, Sung-Hoon,Lee, Hyoung Woo,Koh, Kyung Soo,Kim, Doo Man,Baik, Sei Hyun,Lee, Kwan Woo,Nam, Moon Suk,Park, Yong Soo,W Korean Diabetes Association 2011 Diabetes and Metabolism Journal Vol.35 No.5
<P><B>Background</B></P><P>The Korean National Diabetes Program (KNDP) cohort study is performing an ongoing large-scale prospective multicenter investigation to discover the pathogenesis of type 2 diabetes in Korean patients. This study was performed to examine the prevalence of chronic complications in patients with type 2 diabetes among those registered in the KNDP cohort within the past 4 years.</P><P><B>Methods</B></P><P>This study was performed between June 2006 and September 2009 at 13 university hospitals and included 4,265 KNDP cohort participants. Among the participants, the crude prevalence of microvascular and macrovascular diseases of those checked for diabetes-related complications was determined, and the adjusted standard prevalence and standardization of the general population prevalence ratio (SPR) was estimated based on the 2005 Korean National Health and Nutrition Examination Survey (KNHANES) population demographics.</P><P><B>Results</B></P><P>Among the KNDP registrants, 43.2% had hypertension, 34.8% had dyslipidemia, 10.8% had macrovascular disease, and 16.7% had microvascular disease. The SPR of the KNDP registrants was significantly higher than that of the KNHANES subjects after adjusting for demographics in the KNHANES 2005 population. However, with the exception of cardiovascular disease in females, the standardized prevalence for the most complicated items in the survey was significantly higher than that in the KNHANES subjects.</P><P><B>Conclusion</B></P><P>The prevalence of macrovascular disease and peripheral vascular disease were significantly higher in Korean patients with type 2 diabetes than in the normal population. However, no significant difference was noted in the prevalence of cardiovascular disease in females.</P>
( Sung Joon Shin ),( Moo Yong Rhee ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: Because measurement of sodium intake by 24-hour urine collection is labor intensive, a more convenient method of sodium intake assessment has been required. The present study evaluated the reliability of equations using spot urine (SU) samples in the estimation of 24-hour urine sodium excretion (24HUNa), which were developed by us and other investigators. Methods: Participants were recruited by list-assisted random-digit dialing (LARDD) in four cities. Equations estimating 24HUNa from SU samples were derived from morning fi rst SU of 101 participants (52.4±11.1 years). Equations developed by us and other investigators were validated with SU samples from a separate group of participants (n=224, 51.0±10.9 years). The equation was based upon the following hypothesis. (1) 24HUCr ~ predicted 24-hour urine creatinine excretion (PrUCr) (2) 24-HUNa/24HUCr 8 SU sodium (SUNa)/SU creatinine (SUCr) (3) 24-HUNa 8 SUNa/SUCr × PrUCr Results: We developed the linear, quadratic, and cubic equations from morning fi rst SU samples because morning fi rst SU sodium/creatinine ratio had the highest correlation coeffi cient for 24HUNa/creatinine ratio (r=0.728, p<0.001). In the validation group, the estimated 24HUNa by Kawasaki`s, Tanaka`s, linear, quadratic, and cubic equation showed signifi cant correlations with measured 24HUNa values. The estimated 24HUNa by the linear, quadratic, and cubic equations developed from our study were not signifi cantly different from measured 24HUNa, while estimated 24HUNa by Kawasaki and Tanaka equations were signifi cantly different from measured 24HUNa values. The limits of agreement between measured and estimated 24HUNa obtained by 5 equations were more than 100 mmol/24-hour in the Bland-Altman analysis. All equations showed tendency of under- or over-estimation of 24HUNa, depending on the level of measured 24HUNa. Conclusions: The result of this present study suggests that estimation of 24HUNa from single SU could not be used for the estimation of 24HUNa.
Rhee, Jong-Il,Kang, Tae-Hyoung,Lee, Kum-Il,Sohn, Ok-Jae,Kim, Sun-Yong,Chung, Sang-Wook The Korean Society for Biotechnology and Bioengine 2006 Biotechnology and Bioprocess Engineering Vol.11 No.5
2D fluorescence sensors produce a great deal of spectral data during fermentation processes, which can be analyzed using a variety of statistical techniques. Principal component analysis (PCA) and a self-organizing map (SOM) were used to analyze these 2D fluorescence spectra and to extract useful information from them. PCA resulted in scores and loadings that were visualized in the score-loading plots and used to monitor various fermentation processes with recombinant Escherichia coli and Saccharomyces cerevisiae. The SOM was found to be a useful and interpretative method of classifying the entire gamut of 2D fluorescence spectra and of selecting some significant combinations of excitation and emission wavelengths. The results, including the normalized weights and variances, indicated that the SOM network is capable of being used to interpret the fermentation processes monitored by a 2D fluorescence sensor.