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채영준,In Eui Bae,Hyun Soo Kim,Sang Gab Yoon,Jin Wook Yi,Hyeong Won Yu,Su-jin Kim,Young Jun Chai,Kyu Eun Lee,Yeo-Kyu Youn 대한외과학회 2020 Annals of Surgical Treatment and Research(ASRT) Vol.98 No.6
Purpose: The aim of this study was to compare the large multi-institutional data of surgical outcomes of bilateral axillo-breast approach (BABA) robotic (RT) and endoscopic thyroidectomy (ET) and to evaluate the merits of robotic thyroidectomy. Methods: From 2004 to 2015, 1,029 patients underwent BABA ET, and from 2008 to 2015, 2003 patients underwent BABA RT in 3 large volume centers in Korea. Two groups were retrospectively compared in terms of clinicopathologic characteristics, complications, surgical completeness, and long-term outcomes using propensity score matching analysis. Results: Both groups had similar demographic characteristics including age, sex, tumor size, pathologic stage, and hospital stay after matching. Each group had similar rate of transient hypoparathyroidism, however, ET showed significantly higher rate of permanent hypoparathyroidism (ET 5.2% vs . RT 2.3%, P = 0.05), and transient vocal cord palsy (ET 14.4% vs . RT 9.1%, P = 0.006). Total operation time was longer in the ET group irrespective of surgical extents, including lobectomy (P = 0.016), total thyroidectomy (P = 0.031), and total thyroidectomy with central lymph node dissection (P = 0.019). The rate of patients with off-Tg under 1.0 ng/mL after 1st ablation was significantly higher in RT than ET group (ET 64.6% vs . RT 92.7%, P < 0.001). In long-term follow-up of cancer patients, 1.4% experienced recurrence after ET (10 cases), while 0.3% cases experienced recurrence after RT (5 cases) (P < 0.001). Conclusion: Both ET and RT can be safe and effective methods to treat thyroid diseases. However, the application of robotic system may help to overcome the limitations of the instruments and surgeon’s skills
Can Robotic Thyroidectomy Be Performed Safely in Thyroid Carcinoma Patients?
채영준,이규언,윤서규 대한내분비학회 2014 Endocrinology and metabolism Vol.29 No.3
Since the adoption of the Da Vinci robotic system for remote access thyroid surgery, robotic thyroidectomy (RT) has become a popular surgical option for patients who want to avoid neck scars. Surgeons in South Korea pioneered this surgical technique and have reported successful outcomes. Although many studies have reported that RT is a feasible and safe therapeutic alternative, concerns over the surgical and oncological safety of RT remain. This article reviews the advantages and disadvantages of RT and compares the surgical safety and oncological completeness of RT with conventional open thyroidectomy.
채영준,문석배,정성은,이성철,박귀원,Chai, Young-Joon,Moon, Suk-Bae,Jung, Sung-Eun,Lee, Seong-Cheol,Park, Kwi-Won 대한소아외과학회 2007 소아외과 Vol.13 No.2
Adrenocortical tumors are very rare in children and the clinical course is not clearly understood. The aim of this study is to review the clinical characteristics and courses of pediatric adrenocortical tumors. The medical records of patients who underwent surgery for primary adrenal tumor at the Department of Surgery, Seoul National University hospital, from Jan. 1986 to Feb. 2006 were reviewed. There were 10 adrenocortical tumor patients; 5 had adrenocortical adenoma and 5 adrenocortical carcinoma. All of the adrenocortical adenomas presented as functioning tumors, i.e., Cushing syndrome or virilization. However, only 2 patients had functioning adrenocortical carcinoma. Median size of adenoma was 5 (3.3-6) cm, and carcinoma 12.5 (6.5-13) cm. Adenomas were smaller than 6 cm and carcinomas were larger than 6.5 cm. Surgical resection alone cured all adrenocortical adenoma patients, and they were all alive without recurrence. Three of 5 adrenocortical carcinoma patients died of tumor recurrence despite radical surgery and chemotherapy. There were 2 long-term survivals for adrenocortical carcinoma, one patient survived 10 years without recurrence until he died of newly developed osteosarcoma, and the other patient is alive without recurrence for 20 years. As the prognosis of pediatric adrenocortical carcinoma is poor, peri-operative aggressive chemotherapy is suggested in addition to radical surgery.
사각형 해양구조물의 청수현상 발생과정에 대한 실험적 연구
채영준(Young Jun Chae),이강남(Kang Nam Lee),정광효(Kwang Hyo Jung),서성부(Sung Bu Suh),이재용(Jae Yong Lee) 한국해양공학회 2016 韓國海洋工學會誌 Vol.30 No.1
An experimental study was performed to investigate the behavior of green water on a structure with a rectangular cross section under wave conditions, along with the flow characteristics in bubbly water flow. An experiment was conducted in a two-dimensional wave flume using an acrylic model (1/125) of FPSO BW Pioneer operating in the Gulf of Mexico under its design wave condition. The occurrence of green water, including its development, in front of the model was captured using a high-speed Charge Coupled Device (CCD) camera with the shadowgraph technique. Using consecutive images, the generation procedure for green water on the model was divided into five phases: flip through, air entrapment, wave run-up, wave overturning, and water shipping. In addition, the distinct water elevations of the green water were defined as the height of flip through, height of splashing jet, and height of freeboard exceedance, and showed a linear relationship with the incoming wave height.
유제품 대리점 프로그램의 클라우드 도입 문제점과 향후 연구 방향
채영준 ( Young-jun Chae ),이재두 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.1
현재 유제품 시장의 규모는 꾸준히 증가 하고 있다. 그리고 4차 산업혁명 시대 도래에 따라 유제품 관련 업계는 신기술 개발 및 고도화에 많은 관심을 갖고 있다. 그렇기 때문에 현재 사용중인 온프레미스 방식의 유통 시스템에도 클라우드 도입을 위한 논의가 진행중이다. 하지만 레거시 시스템은 이미 약 20년 넘는 기간동안 사용되고 있기 때문에, 고도화 작업은 보다 정확하게 계획되어야 한다. 온 프레미스 방식의 클라우드 도입은 단순히 기술적인 부분만 문제 되는 것이 아니다. 유제품유통 체계의 생태계를 파악하고 이때 발생될 수 있는 문제를 파악해야 된다. 이후 파악할 수 있는 문제점에 대한 현실적인 대안을 고려하여 보다 효율적인 결론을 도출해야 한다.