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갑상선 수술 환자에서 세침흡인 세포검사와 조직검사와의 연관성
백종범,김성철,배금석,강성준,Jong Beom Baek,M.D.,Sung Chul Kim,M.D.,Keum Seok Bae,M.D. and Seong Joon Kang,M.D. 대한갑상선-내분비외과학회 2009 The Koreran journal of Endocrine Surgery Vol.9 No.4
Purpose: Fine needle aspiration cytology (FNAC) has become a standard diagnostic tool for thyroid nodules. The purpose of this study is to analyze the correlation between FNAC and the final histology to improve the diagnostic value. Methods: We collected 792 patients who had undergone thyroidectomy, and we selected 549 patients who had undergone preoperative FNAC. The FNAC results were classified as non-diagnostic, malignancy, indeterminate and benign. The final pathologic reports were classified into two categories: malignant or benign. The individual histology was also identified. We retrospectively analyzed the pathologic result, the sensitivity, the specificity and the predictive value of the FNAC. Results: Among 549 patients, their FNACs showed 47 non diagnostic results, 189 malignancies,136 indeterminate results and 177 benign results. The false positive rate was 1.1% and the false negative rate was 12.9%. The final pathology reports were 262 malignancies and 287 benign lesions. There were 42 (30.9%) malignancies among the 136 indeterminate cases. Adenomatous hyperplasia was the most common benign lesion and papillary carcinoma (containing micropapillary carcinoma) was the most common benign lesion. Conclusion: FNAC is an easy and safe diagnostic tool, but it still has many limitations. It is necessary to reduce the number of non diagnostic results. Technical advances, classification of the advanced categories of cytology and other staining methods can provide more specific results, and this can reduce the rate of performing unnecessary surgery. (Korean J Endocrine Surg 2009;9:223-227)
특집(特輯) 논문(論文): `11 춘계학술대회 우수 논문 ; 고강도 PMMA 및 나일론 -산화그래핀 복합재료 섬유의 제조 및 특성평가
황상하 ( Sang Ha Hwang ),이동욱 ( Dong Wook Lee ),백종범 ( Jong Beom Baek ),신현석 ( Hyeon Suk Shin ),박영빈 ( Young Bin Park ) 한국복합재료학회 2011 Composites research Vol.24 No.4
수정된 Hummer`s 방법으로 제조된 산화그래핀(graphene oxide, GO)을 이용하여 PMMA와 Nylon 6,6에 분산시켜 각각 복합재료 섬유와 필름으로 제조하고 동적기계적 물성과 인장특성을 분석하였다. 동적기계적 분석과 인장 특성에서 GO-PMMA 복합재료 섬유는 GO의 효율적 기계적 물성 보강 효과를 확인 하였으나 Nylon 6,6 복합재료는 제조과정에서 사용된 포름산의 낮은 pH로 인해 산화그래핀의 분산안정성이 저하되어, 낮은 보강효율을 보임을 알 수 있었다. In this work, we successfully fabricated graphene oxide (GO) and GO-based PMMA composite fiber and nylon films. Dynamic mechanical and tensile properties of PMMA-GO composite fiber showed that GO is efficient reinforcement for polymer matrices. However, Nylon 6,6-GO composite films showed low reinforcement efficiency in terms of dynamic mechanical and tensile properties due to the colloid instability of GO in formic acid at a low pH level.