http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
승모판 협착증 환자에서 운동부하 심장풀스캔을 이용한 좌심실기능의 평가
박창윤(Chang Yun Park),이도연(Do Yun Lee),심원흠(Won Heum Shim),김한수(Han Soo Kim),박승정(Seung Jung Park),조승연(Seung Yun Cho),김성순(Sung Soon Kim),이웅구(Woong Ku Lee),김명진(Myeong Jin Kim),최규옥(Kyu Ok Choe) 대한핵의학회 1992 핵의학 분자영상 Vol.26 No.1
N/A We performed exercise radionuclide ventriculography to evaluate left ventricular (LV) function in 35 patients with pure mitral stenosis (MS). There were 6 males and 29 females ranging from 21 to 63 years of age (mean 37±10 years). We also studied 8 healthy men as control group (mean age 27±5 years. Each patients was evaluated at rest and during maximal exercise on an isokinetic bicycle ergometer. Peak filling rate (PFR), peak ejection rate (PER), ejection fracion (EF), end-diastolic volume(EDV), end-systolic volume (ESV), stroke volume (SV), and cardiac output (CO) were determined by the radionuclide technique. The results were summarized as follows: 1) LV systolic dysfunction and reduced PFR were noted in patients with MS. 2) EDV as well as SV decreased with exercise in patients with MS. 3) No significant increase in EF during exercise compared to rest value was observed because it was caused by reduced EDV and SV during exercise in patients with MS. 4) CO increased with exercise was significantly lower than normal in patients with MS. 5) Patients with MS were divided into two groups according to whether EF increased more than 5% druing exercise compared to resting state or decreased. Significant difference were found between these two groups. Patients with a fall in EF with exercise were older, had larger left atrial size, and had lesser decreased in ESV during exercise.
박창윤(Park Chang Yun) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.3
This paper describes Real-Time Transport Protocol(RTTP) that provides for a user connection-oriented services with performance guarantee. Assuming that real-time network services will be provided, RTTP solves problems at end-host. RTTP has defined a net set of primitives for real-time communication services based on the analysis of user requirements on various applications. Introducing the notion of Abstract Network Layer independent of real networks, RTTP''s implementation scheme can be applied to various netwroks. The study also introduces an implementation strategy, protocol as a library, to provide predictability of protocol processing time, which should be known a priori for performance guarantee. Internally, RTTP has a set of QoS translation rules that change a user''s performance requirements to the equivalent network QoS parameters. RTTP also introduces a net opportunistic error control method that can trade-off between overhead and error correction according to a user''s requirement on reliability.
박창윤 ( Chang Yun Park ) 대한내과학회 1968 대한내과학회지 Vol.11 No.7
There is very little doubt today that the gall bladder empties by the contraction of its wall muscle and which is induced by cholecystokinin liberated from the duodenal mucosa as a consequence of the entry of foodstuff or gastric acid in it (Ivy and Oldber
간질증후군의 99mTc - HMPAO Brain SPECT ; Ictal Study
박창윤(Chang Yun Park),서정호(Jung Ho Suh),김동익(Dong Ik Kim),정태섭(Tae Sub Chung),이종두(Jong Doo Lee),홍용국(Yong Kook Hong),이병인(Byung In Lee),허균(Kyun Huh) 대한핵의학회 1992 핵의학 분자영상 Vol.26 No.2
N/A Both interictal and ictal Tc-99m-HMPAO brain SPECT were performed in 22 patients with medically intractable epilepsy. Localization of epileptic foci in our patients was made by combined results of EEG and other tests, including Wada test, magnetic resonance imaging, and neuropsy- chometric test. Among them, ictal Tc-99m-HMPAO SPECT, localized epilptic foci in 20 of 22 patients and provided evidence of epileptic focus in 12 patients by demonstrating maximally increased regional cerebral perfusion (rCP) in epileptic foci during the ictal study with decreased rCP in interictal study. Ictal Tc-99m-HMPAO SPECT Was particularly useful for investigating epileptic foci, and when correlated with simultaneously recorded ictal EEG, provided further insight for localizing epileptic foci. Conclusively, Tc-99m-HMPAO SPECT is a useful, noninvasive method of localizing epileptic activity which may be particularly important for presurgical investigations, especially in those patients without large morphological lesions.
우측 관상동맥 폐쇄 환자에서 관상동맥내 Thallium - 201 주사를 이용한 측부 혈행의 의의
박창윤(Chang Yun Park),이도연(Do Yun Lee),이종두(Jong Doo Lee),심원흠(Won Heum Shim),김한수(Han Soo Kim),조승연(Seung Yun Cho),김성순(Sung Soon Kim),정남식(Nam Sik Chung),김용수(Young Soo Kim),하종원(Jong Won Ha),권혁문(Hyuk Moon Kwo 대한핵의학회 1993 핵의학 분자영상 Vol.27 No.2
N/A To compare the myocardial viability in patients suffering from total occlusion of the right coronary artery (RCA) with the angiographic collaterals, intracoronary injection of Thallium-201 (T1-201) was done to 14 coronary artery disease (CAD) patients (pts) with total occlusion of RCA and into four normal subjects for control. All 14 CAD pts had Grade 2 or 3 collateral circulations. There were 14 male and 4 females, and their ages ranged from 31 to 70 years. In nine pts, T1-201 was injected into left main coronary artery (LCA) (300∼350 μCi) to evaluate the myocardial viability of RCA territory through collateral circulations. The remaining five pts received T1-201 into RCA (200-250 μCi) because two had intraarterial bridging collaterals and three had previous successful PTCA. Planar & SPECT myocardial perfusion images were obtained 30 minutes, and four to five hours after T1-201 reinjection. Intravenous T1-201 reinjection (six pts) or Tc-99m-MIBI (two pts) were also performed in eight CAD pts. Intracoronary myocardial perfusion images were compared with intravenous T1-201(IV T1-201) images, EGG, and ventriculography. Intracoronary TI-201 images proved to be superior to that of IV T1-201 due to better myocardial to background uptake ratio and more effective in the detection of viable tissue. We also found that perfusion defects were smaller on intracoronary T1-201 images than those on the IV T1-201. All of the 14 CAD pts had either mostly viable myocardium (seven pts) or large area of T1-201 perfusion (seven pts) in RCA territory, however ventriculographic wall motion and ECG did not correlate well with intracoronary myocardial perfusion images. In conclusion, total RCA occlusion patients with well developed collateral circulation had large area of viable myocardial in the corresponding territory.
박경호(Kyeongho Park),김지혜(Ji Hye Kim),이주현(Ju Hyun Lee),박창윤(Chang Yun Park),민상렬(Sang Lyul Min) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1A
하나의 컴퓨터 시스템은 여러 종류의 이질적인 서버들로 구성된 것으로 간주할 수 있다. 본 논문에서는 이질적 다중서버 시스템에서의 프로세스 스케줄링 기법에 대해 연구한다. 스케줄링에서는 서비스의 공정성과 시스템 성능의 두 가지 측면이 고려되어야 한다. 여기에서는 공정성을 위하여 기존의 단일 서버의 시스템에서 사용되던 공정 큐잉에 기반한 스케줄링 기법을 제안한다. 또한 각 서버간의 이용률 차이를 감안한 시스템 전체 성능 향상을 위한 방법에 대해서도 고찰한다.
이동통신 환경에서 사용자의 위치정보를 보호하는 새로운 방법
박창설(Chang-Sul Park),김순석(Soon-Suk Kim),김성훈(Sung-Hoon Kim),박창윤(Chang-yun Park),김성권(Sung-Kwun Kim) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.1A
기존의 이동통신은 과거 몇 년간 이동성, 신속성, 광역성, 편리성 등으로 인하여 이용도가 크게 늘어났다. 제1세대 이동통신인 아날로그 이동전화 서비스가 시작된 이후 2세대 디지털 이동통신 기술인 CDMA 및 GSM을 거쳐 최근에 대두되고 있는 차세대 멀티미디어 이동통신인 IMT-2000 시대를 개막함으로써 이동통신에 대한 관심은 한층 증대되었으며, 또한 사용량 증가에 따라 보안문제에도 최근 많은 관심을 보이고 있다. 본 논문에서는 차세대 이동통신 환경에서 네트워크 제공자(Network Provider, 이하 줄여서 NP라 부른다)로부터 모바일 사용자의 프라이버시라 할 수 있는 위치정보를 보호하기 위한 새로운 시스템을 제안하고자 한다.