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장현식,박철근,손은주,김은경,곽진영,문희정,윤정현 대한초음파의학회 2016 ULTRASONOGRAPHY Vol.35 No.2
Purpose: The goal of this study was to evaluate the clinicopathological and imaging features ofthyroid nodules surgically diagnosed as hyaline trabecular tumor (HTT), and to assess the role ofcytology and frozen sections (FS) in the diagnosis of HTT. Methods: This study included 21 thyroid nodules in 21 patients treated from August 2005 toMarch 2015 (mean age, 53.3 years) who were either diagnosed as HTT or had HTT suggestedas a possible diagnosis based on cytology, FS, or the final pathology report. Patients’ medicalrecords were retrospectively reviewed for cytopathologic results and outcomes during the courseof follow-up. Sonograms were reviewed and categorized. Results: Twelve nodules from 12 patients were surgically confirmed as HTT. Ultrasonography(US)-guided fine needle aspiration (FNA) was performed on 11 nodules, of which six (54.5%)were papillary thyroid carcinoma (PTC) or suspicious for PTC and three (27.3%) were HTT orsuspicious for HTT. Intraoperative FS suggested the possibility of HTT in seven nodules, of whichfour (57.1%) were confirmed as HTT. US-FNA suggested the diagnosis of HTT in 10 nodules,of which three (30.0%) were confirmed as HTT. Common US features of the 12 pathologicallyconfirmed cases of HTT were hypoechogenicity or marked hypoechogenicity (83.4%), absence ofcalcifications (91.7%), parallel shape (100.0%), presence of vascularity (75.0%), and probablebenignity (58.3%). Conclusion: HTT should be included in the differential diagnosis of solid tumors withhypoechogenicity or marked hypoechogenicity and otherwise benign US features that have beendiagnosed as PTC through cytology.
1P-611 Extraction and analysis of pigments in natural materials
장현식,이승범,홍인권 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
색소는 현대인들의 생활 속에서 다양하게 사용되고 있다. 인공색소는 화학적인 합성으로 만들어지며 대량 생산이 가능하다. 하지만 인공색소는 알레르기를 유발하는 등 인체에 유해한 영향을 줄 수 있다. 반면 천연색소는 천연물에서 색소를 추출하는 것으로 인체에 무해하며 유익한 효과를 동반하기도 한다. 따라서 천연색소 추출에 관한 연구가 활발히 이루어지고 있다. 본 연구에서는 목표 값을 설정하여 천연물에서 색소를 추출하고 추출한 색소와 목표한 색의 유사성을 평가하기 위해 Solubility parameter와 the CIE L<sup>*</sup>a<sup>*</sup>b color space를 사용하여 분석한다. 따라서 본 연구에서는 목표한 색과 가장 유사한 색소를 추출하는 것을 목표로 한다.