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An Engineering View on Megatrends in Radiology: Digitization to Quantitative Tools of Medicine
Kim, Namkug,Choi, Jaesoon,Yi, Jaeyoun,Choi, Seungwook,Park, Seyoun,Chang, Yongjun,Seo, Joon Beom The Korean Society of Radiology 2013 KOREAN JOURNAL OF RADIOLOGY Vol.14 No.2
<P>Within six months of the discovery of X-ray in 1895, the technology was used to scan the interior of the human body, paving the way for many innovations in the field of medicine, including an ultrasound device in 1950, a CT scanner in 1972, and MRI in 1980. More recent decades have witnessed developments such as digital imaging using a picture archiving and communication system, computer-aided detection/diagnosis, organ-specific workstations, and molecular, functional, and quantitative imaging. One of the latest technical breakthrough in the field of radiology has been imaging genomics and robotic interventions for biopsy and theragnosis. This review provides an engineering perspective on these developments and several other megatrends in radiology.</P>
Dong-Yeop Shin,Yun-Gyoo Lee,이현정,Seyoun Choi,Jin Joo Park,김동완 대한혈액학회 2010 Blood Research Vol.45 No.4
Primary cardiac lymphoma (PCL) is a rare disease entity with only a few reported cases in Korea. In this paper, we report a case of PCL in a 59-year-old man presenting with chest pain. Diffuse large B-cell lymphoma was diagnosed through a cardiac catheterization-assisted percutaneous endomyocardial biopsy, and there was no evidence of extracardiac involvement of the lymphoma.The patient had a complete clinical response after systemic chemotherapy with a rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (R-CHOP) regimen and additional post-chemotherapeutic radiation therapy. The patient experienced a long-term disease-free survival of over 4 years. However, he received coronary artery bypass graft surgery due to an acute myocardial infarction that occurred 3 years after the completion of the radiation therapy. Although the addition of radiation therapy to the treatment is thought to decrease the risk of relapse in patients with PCL, a careful and thorough consideration of the potential complications of radiation therapy, particularly with respect to cardiac complications, should be considered.
RGBY LED를 이용한 500W급 고광도 투광주명 시스템 개발
김기훈(Gi-Hoon Kim),김성중(SungJoong Kim),최세윤(SeYoun Choi),송상빈(Sang-Bin Song) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
500W RGBY LED 투광기를 개발하기 위하여, 투광기의 광학 및 방열 기구를 설계하였다. 이와 같은 설계결과를 적용하여 500W RGBY 투광기의 시제품을 제작하였고, 시제품의 광학적 성능은 협각 30°, 중각 65~70°, 광각 85°이상을 만족시켰다. 또한 각각의 광원모듈은 대상 온도 60도 이내의 외부 온도를 갖도록 설계하고 프레임과 연동하여 20% 정도 온도 변화를 제어할 수 있도록 방열 설계 요소를 설정하였다.
김기훈(Gi-Hoon Kim),김성중(SungJoong Kim),최세윤(SeYoun Choi),박정욱(Joung Wook Park),송상빈(Sang-Bin Song) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.9월
60W급 LED 방폭등기구를 개발하기 위하여 AL Metal PCB를 이용하여 고출력 LED 패키지와 Multi array LED 모듈을 설계하였다. 이와 같은 설계를 통해 60W급 LED 방폭등기구를 개발 하였으며, 그 결과 광속 및 소비전력 효율 기구 온도 에서 각각 3400lm, 56W, 60 lm/W, 63℃ 로 주요 개발 목표치를 만족시켰다.
Feasibility of laparoscopic sentinel basin dissection for limited resection in early gastric cancer
Lee, Jun Ho,Ryu, Keun Won,Kook, Myeong-Cherl,Lee, Jong Yeul,Kim, Chan Gyoo,Choi, Il Ju,Kim, Seok-Ki,Jang, Seyoun,Park, Sook Ryun,Kim, Young Woo,Nam, Byung-Ho,Bae, Jae-Moon Wiley Subscription Services, Inc., A Wiley Company 2008 Journal of surgical oncology Vol.98 No.5
<B>Background</B><P>The clinical applications of sentinel node (SN) biopsies in early gastric cancer are limited because of low sensitivity. Sentinel basin (SB) dissection has been suggested as alternative to SN biopsy to improve sensitivity. The aim of this study was to examine the feasibility of laparoscopic SB dissection.</P><B>Methods</B><P>Twenty-one gastric adenocarcinoma patients of cT1N0 were enrolled. Technetium 99 m human serum albumin and indocyanine green were injected into the submucosal layer around tumor using an intraoperative endoscope. Green-stained or radioactive lymphatic basins were detected and defined as SBs. After laparoscopic SB dissection, laparoscopy-assisted gastrectomy with D2 lymphadenectomy was performed. Dissected SB nodes and non-SB nodes were evaluated for metastasis pathologically.</P><B>Results</B><P>The SB detection rate was 95.2%. Numbers of SBs were one in 6, two in 10, and three in 4 patients. The mean number of SB nodes was 7.0. Two patients with lymph node metastasis were diagnosed by SB dissection. Mean time of laparoscopic SB dissection procedure was 15.2 min.</P><B>Conclusions</B><P>Above findings suggest that laparoscopic SB dissection is technically feasible, and it might have better sensitivity than SN biopsy. However, the validity of this procedure should be evaluated in a larger series before being clinically applied. J. Surg. Oncol. 2008;98:331–335. © 2008 Wiley-Liss, Inc.</P>