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A Survey of Stereotactic Body Radiotherapy in Korea
배선현,김미숙,장원일,계철승,김우철,김은석,김진호,김진희,양광모,이규찬,장아람,조선미 대한암학회 2015 Cancer Research and Treatment Vol.47 No.3
Purpose The purpose of this study is to investigate the current status of stereotactic body radiotherapy (SBRT) in Korea. A nationwide survey was conducted by the Korean Stereotactic Radiosurgery Group of the Korean Society for Radiation Oncology (KROG 13-13). Materials and Methods SBRT was defined as radiotherapy with delivery of a high dose of radiation to an extracranial lesion in ! 4 fractions. A 16-questionnaire survey was sent by e-mail to the chief of radiation oncology at 85 institutions in June 2013. Results All institutions (100%) responded to this survey. Of these, 38 institutions (45%) have used SBRT and 47 institutions (55%) have not used SBRT. Regarding the treatment site, the lung (92%) and liver (76%) were the two most common sites. The most common schedules were 60 Gy/4 fractions for non-small cell lung cancer, 48 Gy/4 fractions for lung metastases, 60 Gy/3 fractions for hepatocellular carcinoma, and 45 Gy/3 fractions or 40 Gy/4 fractions for liver metastases. Four-dimensional computed tomography (CT) was the most common method for planning CT (74%). During planning CT, the most common method of immobilization was the use of an alpha cradle/vacuum-lock (42%). Conclusion Based on this survey, conduct of further prospective studies will be needed in order to determine the appropriate prescribed doses and to standardize the practice of SBRT.
현민우 ( Min Woo Hyun ),양광모 ( Kwang Mo Yang ),오선일 ( Sun Il Oh ),강성우 ( Sung Woo Kang ),강경식 ( Kyong Sik Kang ) 한국경영공학회 2011 한국경영공학회지 Vol.16 No.2
Basically, the order that is previously fixed in the production plan is prioritized than the unfixed order but the unfixed order is sometimes prioritized. Many studies on fast countermeasures, when the unfixed order besides fixed orders are urgently fixed or urgent order occurs, have been conducted, but decision-making of selecting priority of the urgent order is made without understanding of objective function and restrictions. In addition, in reality that is the subject of decision-making, variable, uncertain, or vague parts are written with inherent experts` supervision so it is hard to evaluate positive and negative effects objectively and lowers reliability of countermeasures. In case that the urgent order occurs due to unexpected traffic changes and especially such urgent orders flock at once, unless the priority is decided properly, then even previously fixed order would be cancelled and thus there may be the delivery deadline. The purpose of this study is to develop the urgent order priority decision-making model by using fuzzy theory in order to solve vague decision-making reasonably as a method for determining the effective order of priority of urgent order.
채취시기가 다른 국내외 녹차잎의 기능성분 함량, 뇌세포 생존 및 대사 효소 활성 조절 효과 조사
이방희(Bang-Hee Lee),전세현(Sae Hyun Jeon),정하나(Hana Jeong),최정(Jung Choi),김영민(Young-Min Kim),양광열(Kwang-Yeol Yang),남승희(Seung-Hee Nam) 한국식품과학회 2020 한국식품과학회지 Vol.52 No.5
본 연구에서는 녹차 국내종(보향, 참녹), 외래종(후슌, 야부기다)의 채취시기를 달리하여 테아닌, GABA 등 유용 성분 함량을 분석하였고, 항산화능, α-glucosidase 활성 억제, HMG-CoA 저해도, 세포독성 측정, 뇌 신경세포 보호 효과, 항 스트레스 효과를 조사하여 유용 성분과의 상관성을 파악하고자 하였다. 테아닌과 GABA 함량은 모든 품종에서 채취시기가 늦어질수록 함량이 감소하는 경향을 나타내었다. 총 아미노산 함량에서는 채엽시기가 늦어질수록 보향 품종에서 증가하는 경향을 나타내었고 후슌, 야부기다 그리고 참녹은 여름차에서 감소 후 다시 가을차에서 증가하는 경향을 보였다. 총페놀과 플라보노이드의 함량과 항산화능을 조사했을 때 ABTS는 후슌, 보향, 참녹에서 플라보노이드 농도와 비례하는 경향을 보였으며, 재래 녹차와 야부기다는 총페놀의 농도와 비례하는 경향을 나타내었다. DPPH radical 소거능은 참녹을 제외한 모든 시료에서 여름차의 활성이 가장 높고 가을차에서 활성이 다시 감소하는 것을 확인하였다. 카테킨류 측정에서 EGCg 함량은 카테킨류에서 50% 이상을 차지했고, 총 카테킨 함량과 Ecg, EGCg는 종과 관계없이 채취 시기가 늦어질수록 증가하는 경향을 보였으며 EGC는 감소하는 경향을 보였다. 품종별 봄, 여름, 가을차를 시료로 하여 측정한 α-glucosidase 저해활성과 HMG-CoA reductase 저해능은 채취 시기가 늦어질수록 증가함을 보였고 그 중 가을에 채취한 참녹에서의 저해 활성이 각각 72.93%, 69.78%로 두 저해능 측정에서 가장 높은 저해활성을 보였다. 또한 뇌신경세포(SH-SY5Y)를 이용한 세포 독성 측정에서 참녹 품종이 96.34%로 가장 높은 세포생존율을 보였고 항스트레스 측정에서 269.2 ng/mL로 가장 낮은 cortisol 함량이 확인되었다. This study was performed to compare nutritional compounds and physiological functions of five domestic and imported green tea cultivars at three time points. The five cultivars were compared for theanine, γ-aminobutyric acid, and catechin content by LC-MS/MS and HPLC. Furthermore, the five tea cultivars were functionally characterized with respect to antioxidant activity, brain cell protective effect, and inhibitions of α-glucosidase and HMG-CoA reductase activities. Among green tea cultivars, Chamnok had the highest content of catechins (198 mg/g DW), theanine (11.89 mg/g DW), and tannin (23.6 mg/g DW). Considering functional properties, Chamnok treatment resulted in the maximum viability of brain cells and reduced the cortisol content of SH-SY5Y cells. The inhibition of α-glucosidase and HMG-CoA reductase was the strongest following Chamnok treatment (72.9% and 69.8%, respectively). These results indicate that Chamnok could be optimal for consumption or favorable processing owing to its high nutritional compounds, such as theanine and catechin, and remarkable brain cell protective effects.
Kim, Chul Soo,Jung, Kwang Ho,Ryu, Jae Chun,Park, Sang Hyung,Oh, Se Ick,Kim, Dae Hyun,Yang, Kwang Mo,Kim, Joon Hee,Yang, Sung Hyun,Sohn, Seung Chang,Suh, Hyun Suk,Kim, Sung Rok,Kim, Re Hwe 인제대학교 1995 仁濟醫學 Vol.16 No.1
1979년에서 1971년까지 13년 동안 본원의 의무기록상 56명의 호치킨 임파종 환자가 있었으며 이중 국소성 질환으로 방사선 치료 만을 시행하거나 본원의 화학요법 치료방침으로부터 위배된 진행성환자를 제외한 14명의 진행성 질환을 가진 환자 (남자 10명, 여자 4명, 연령 8-67, 연령의 중앙치 43) 를 장기추적 하였다. 화학요법은 표준적인 MOPP, BCVPP, ABVD 복합화학요법으로부터 용량강도를 절반에서 2/3로 감소시킨 변형을 사용하였고, 관해 유도요법으로는 14명에서 117회 (평균치 8.4, 범위 6-12), 재발후 2차요법으로는 7명에서 64회 (평균치 9.1, 범위 6-13) 시행하였다. 관해유도요법 시행 결과 12명 (86%) 에서 완전 관해 (평균 4.5회에서 관해유도) 2명에서 부분관해를 보였다. 완전관해의 지속기간은 8-107 개월 (중앙치 18) 이었고 8명 (67%) 이 재발하였으며 재발시기의 중앙치는 완전관해후 12개월이었다. 재발한 환자중 1명은 방사선 치료에 반응하지 않았고 7명 중 6명 (86%) 은 1차 화학요법과 다른 2차 화학요법으로 2차 완전관해에 도달 (평균 9.1회에서 관해 유도) 하였으며 2차 완전관해의 지속기간은 6-38 개월 (중앙치 24) 이었다 6명의 환자는 질병으로 사망하였고 8명의 환자는 무병상태로 생존하고 있는데 이중 4명은 지속적인 1차 관해(지속기간, 각각 22, 42, 46, 58 개월) 상태로, 4명은 지속적인 2차 관해 (지속기간, 각각 7, 21, 34, 34 개월) 상태에 있다. 전체 환자의 생존기간은 8-161 개월 (중앙치, 47개월) 이었다. 관해유도까지 소요된 화학요법 횟수, 높은 재발율, 1차 완전 관해율과 동등한 2차 완전 관해율은 본원의 화학요법 방침이 용량강도에서 미흡함을 시사하며 호치킨 임파종의 치료에 있어 화학요법의 용량강도가 중요한 예후인자라는 고전적인 학설에 상응하고 있다. During the 13 year period from 1979 through 1991, 56 Hodgkin's disease patients were seen in our institute. We reviewed medical records of the patients in advanced disease treaded with chemotherapy to study response rate, relapse rate and durations of response and survival. Pa-tients with localized disease amenable to radiation therapy and patients with advanced disease vio-lating our treatment protocol were excluded from the evaluation to have 14 patients left (10 men and 4 women at the ages ranging 8-67 wish a median of 43). Our regimen consisted of variants of standard MOPP, BCVPP, or ABVD regimens with half to two thirds of dose intensity. A total of 117 courses of chemotherapy (mean 8.4, range 6-12) was administered for remission induction. Two patients achieved partial remission, who refused salvage treatment. Twelve patients (86%) attained complete remission (CR) after a mean of 4.5 cycles of chemotherapy (range 2-9). The duration of CR ranged 8-107 months with a median of 18. Eight patients (67%) had relapse at a median of 12 months. A total of 64 courses of salvage treatment (mean 9.1, range 6-13) different from induction regimens induced a second complete remission (CR2) in 6 (86%) of 7 patients. One of 8 relapsed patients did not respond to radiotherapy and gave up salvage chemotherapy. The duration of CR2 ranged 6-38 months with a median of 24. Six patients died of their disease. Eight patients were alive disease free at 25-161 months (median 51), 4 in continuous CR (duration 22+, 42+, 46+, 58+ months each), and 4 in CR2 (duration 7+, 21+, 34+, 34+ months each). The overall survival duration ranged 8-161 months at a median follow-up period of 47 months. Although long term survival could be achieved in 8 patients (57%), underdosing of our regimen was suggested by longer treatment courses for remission induction, higher relapse rate, and high rate of CR2. The review of our data agreed with the classic theory that dose intensity is an important prognostic variable in Hodgkin's disease.