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( Jaewoo Kwon ),( Jae Hoon Lee ),( Yun Beom Ryu ),( Min Kyu Sung ),( Hyeyeon Kim ),( Dakyum Shin ),( Naru Kim ),( Sarang Hong ),( Yejong Park ),( Eunsung Jun ),( Woohyung Lee ),( Ki Byung Song ),( Dae 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Aims: Right anterior sectionectomy (RAS) for hepatic disease is technically difficult and performed infrequently, so there is an insufficient reports about this surgery. We describe here the clinicopathologic and oncologic outcomes of right anterior segmentectomy in 415 patients. Methods: Patients treated with RAS at department of hepato- biliary and pancreatic surgery, Asan Medical Center, Seoul, South Korea between January 2008 and December 2017 were retrospectively reviewed. Results: All patients underwent RAS with alternative Glissonean pedicle clamp and Kelly clamp-crushing method for liver transection. Mean operative time was 165 minutes and transection time was 28 minutes. The incidence of major morbidity (≥grade III) occurred in 28 cases(6.7%). Bile leakage occurred in 63 patients (15.1%) but no patient needed reopration(grade C). Post hepatectomy liver failure grade A occurred in 39 patients (9.4%), grade B occurred in 7 patients (1.7%) but there was no patient of PHLF grade C. There was no in-hospital mortality due to postoperative complication. The mean hospital stay was 13.3 days.The pathologic diagnosis were hepatocellular carcinoma (HCC; n=361, 87.0%), intrahepatic cholangiocarcionoma (IHCC; n=15, 3.6%), HCC and IHCC mixed type (n=17, 4.1%), colorectal cancer liver metastasis (n=12, 2.9%), and the other lesions (n=10, 2.4%). Mean tumor size was 3.8 cm. In hepatocellular carcinoma (HCC), 5 year overall survival(OS) rate was 78.3% and 10 year OS rate was 64.4%. Five year disease free survival(DFS) rate was 57.2%, 10 year DFS rate was 37.7%. Conclusions: RAS showed acceptable procedure-related morbidity, mortality and appropriate oncologic outcomes for HCC.
An Optimized Time-synchronization Method for Simulator Interworking
Kwon, Jaewoo,Kim, Jingyu,Woo, Sang Hyo Arman Korea Multimedia Society 2019 멀티미디어학회논문지 Vol.22 No.8
In this paper, we discuss an optimization approach for time-synchronizations in networked simulators. This method is a sub-technology that is required to combine heterogeneous simulators into a single simulation. In previous time-synchronization studies, they had built a network system among networked simulators. The network system collects network packets and adds time-stamps to the networked packets based on the time that occurs in events of simulation objects in the individual simulators. Then, it sorts them in chronological order. Finally, the network system applies time-synchronization to each simulator participating in interworking sequentially. However, the previous approaches have a limitation in that other participating simulators should wait for while processing an event in a simulator in a time stamp order. In this paper, we attempt to solve the problem by optimizing time-synchronizations in networked simulation environments. In order to prove the practicality of our approach, we have conducted an experiment. Finally, we discuss the contributions of this paper.