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이승아,배자성,김기환,김지일,안창혁,박우찬,송병주,정상설,김정수,Seung Ah Lee,M.D.,Ja Seong Bae,M.D.,Kee Hwan Kim,M.D.,Ji Il Kim,M.D.,Chang Hyuck An,M.D.,Ph.D.,Woo Chan Park,M.D.,Ph.D.,Byung Joo Song,M.D.,Ph.D.,Sang Seol Jung,M.D 대한갑상선-내분비외과학회 2007 The Koreran journal of Endocrine Surgery Vol.7 No.2
Purpose: Endoscopic surgery to treat thyroid neoplasm was developed to solve the aesthetic problems that resulted from conventional open surgery. Although endoscopic thyroidectomy was initially performed in patients with benign thyroid neoplasm, its use has recently been extended to patients with Graves's disease and early cases of thyroid cancer.The purpose of this study was to determine whether this surgical approach is feasible and safe for the treatment of thyroid cancer. Methods: Between December 1999 and April 2006, 132 thyroid cancer patients at our institution were treated by either conventional thyroidectomy or endoscopic thyroidectomy. Endoscopic thyroidectomy was conducted using a gasless anterior neck skin lifting method. The inclusion criteria for endoscopic thyroidectomy in thyroid cancer patients included a tumor size of less than 2cm, absence of extrathyroidal extension, absence of cervical lymph node metastasis, and well differentiated cancers. Results: We performed endoscopic thyroidectomy in 29 thyroid cancer patients. There were no significant differences in operative time, the amount of drainage and the number of retrieved lymph nodes between conventional thyroidectomy and endoscopic thyroidectomy. In addition, although endoscopic thyroidectomy was associated with more complications, it was also associated with a shorter hospital stay. Conclusion: The completeness of surgical resection conducted via an endoscopic thyroidectomy may be comparable to that of conventional surgery, however, a larger series and longer follow-up evaluation are necessary for definitive conclusions to be drawn about its oncologic validity. (Korean J Endocrine Surg 2007;7:103-106)
이승아,김도현,김윤,Lee, Seung-Ah,Kim, Dohyeon,Kim, Yoon 한국멀티미디어학회 2021 멀티미디어학회논문지 Vol.24 No.6
During tensile test, tensile strain of tensile tester is measured by movement distance of upper zig and initial specimen's length. Conventional tensile tester program obtains the tensile strain after the end of the test, however the method is not appropriate in real time because the results are calculated until the test is finished. We suggest a real-time measurement system of tensile strain using ArUco Marker in OpenCV library. The system is designed to detect marker attached on the upper zig and calculate specimen's tensile strain. According to comparison of the calculated data and the results of the tester, errors approximately showed 0.128 mm on 3840×2160 video resolution.