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서상일 대한영상의학회 1984 대한영상의학회지 Vol.20 No.3
Computed Tomograms of 45 patients with or without lung mass were reviewed to determine the characteristics of the major and minor fissures. Also pulmonary vascular distributions were analyzed to localize each pulmonary lobe. The results were as follows: 1. Each major fissure area was imaged frequently as lucent band, and less frequently dense band. 2. The minor fissure area was imaged frequently as lucent band, and less frequently dense band. 2. The minor fissure area was imaged frequently as lucent zones were as same frequency. 3. Avascular planes without above mentioned lucent zones were also correspond to minor fissure areas. 4. Slices of abascular zones were observated between pulmonary arteries to posterior segment or apico-posterior segment of upper lobe and to superior segment of lower lobe on both lungs.
Idiopathic Atrial Standstill in an Old English Sheepdog Cross Dog
서상일,최란,현창백 한국임상수의학회 2015 한국임상수의학회지 Vol.32 No.4
An 1 year old intact male mixed dog (weighing 20 kg) was presented with primary complaints of abdominal distension and severe exercise intolerance. Electrocardiogram found profound bradycardia (46-79 beats/min) with atrial standstill. Laboratory studies found no particular abnormalities. Serum cortisol and T4 concentration were within normal range. Diagnostic imaging studies revealed generalized cardiomegaly, ascites, dilation in all cardiac chambers, absence of atrial contraction, absence of transmitral A-peak, mitral and tricuspid valve insufficiency and normal left ventricular systolic dimension. Based on diagnostic findings, the case was diagnosed as idiopathic atrial standstill. The dog was treated with conventional therapy for heart failure.
서상일,김태준,이은찬,현창백 한국임상수의학회 2015 한국임상수의학회지 Vol.32 No.5
This study evaluated the myocardial performance on echocardiography after the sedation/anesthesia of medetomidine (D), the combination of medetomidine and tiletamine/zolazepam (DZ), and the combination of medetomidine, tiletamine/zolazepam and tramadol (DZT) in Beagle dogs. Ten healthy adult Beagle dogs (weighing 8.6 ± 1.0 kg) were enrolled in this study. Heart rate (HR), fractional shortening (%FS), left ventricular ejection fraction (%LVEF), stroke volume (SV), cardiac output (CO), left ventricular internal diameter in systole (LVIDs) and left ventricular internal diameter in diastole (LVIDd) using M-mode echocardiography were measured prior to anesthesia, then every 10 min for 60 min. The HR, %FS, %LVEF, SV and CO were significantly decreased during sedation/ anesthesia with D, DZ and DZT combination of anesthesia. Although those anesthetic protocols provided acceptable quality of sedation/anesthesia, levels of cardiovascular suppression were substantial and persistent and thus the continuous monitoring on vital signs should be accompanied in any situation. Close attention is required for dogs with pre-existing heart diseases, when those anesthetic protocols were applied.
배열회수보일러(HRSG)에서 이상 유동(Two phase) FAC 고찰
서상일 한국동력기계공학회 2022 동력시스템공학회지 Vol.26 No.5
FAC(Flow Accelerated Corrosion)는 복합화력발전소에서 HRSG 튜브 손상의 주요 원인 중 하나이다. 발전설비에서 발생한 FAC에 대한 연구가 오랫동안 진행되어 왔으며, 관련 자료도 쉽게 접근할 수 있다. 그러나 대부분 비교적 빈번하게 발생하는 단상 유동 FAC에 대한 자료이며, 국내에서 드물게 발생한 사례도 대부분 단상 유동에서 발생한 FAC이다. 특히 국내 복합발전소에서는 이상 유동 FAC 발생사례가 거의 없어 관련 보고서나 자료가 전무한 상태이다. 이로 인해 최근 현장에서는 FAC가 발생할 경우 대책 마련에 혼선을 빚고 있다. 본 논문은 FAC 관련 자료를 바탕으로 단상 유동과 이상 유동의 FAC 발생 요인과 위치, 손상상태 및 대책 방안 등에 대해 차별성을 기술하였으며, 또한 국내 복합화력발전소에서 최근 발생한 FAC 사례소개를 통해 유동 상태에 따른 FAC의 구분을 명확히 할 수 있게 하였다. 따라서 본 논문을 통해 복합화력발전소에서 FAC가 발생했을 경우 보다 명확한 대응책을 마련할 수 있게 되었다.
서상일,김태준,이은찬,현창백,Suh, Sang-IL,Kim, Tae-Jun,Lee, Eun-Chan,Hyun, Changbaig The Korean Society of Veterinary Clinics 2015 한국임상수의학회지 Vol.7 No.2
이번 연구는 비글 개에서 medetomidine(D), medetomidine, tiletamine/zolazepam(DZ) 합제, medetomidine, tiletamine/zolazepam, tramadol(DZT) 합제를 이용한 진정/마취 후 심근 기능을 평가하였다. 10 마리의 건강한 성견 비글(체중 $8.6{\pm}1.0$ kg)를 이번 연구에 사용하였다. M-mode 심장초음파를 사용하여 심박수(HR), 구획단축률(%FS), 좌심실 박출기계수(%LVEF), 박출량(SV), 심박출량(CO), 수축기 좌심실 내강 직경 (LVIDs), 이완기 좌심실 내강 직경(LVIDd)을 마취 전, 그리고 마취 후 10분 간격으로 60분 동안 측정하였다. HR, %FS, %LVEF, SV, CO 는 D, DZ 합제, DZT 합제 로 진정된 동안 심각하게 감소하였다. 이번 실험에 사용된 마취 프로토콜은 사용 가능할 정도의 진정/마취가 이뤄졌지만, 심혈관계 압박의 정도가 심했고 지속적이었고, 따라서, 어떠한 상황에서도 생체지수에 대한 모니터링이 동반되어야 한다. 본 마취 프로토콜은 심장질환을 가지고 있어서 심맥관계 억압의 가능성이 높은 환자에서는 주의해서 사용해야 한다. This study evaluated the myocardial performance on echocardiography after the sedation/anesthesia of medetomidine (D), the combination of medetomidine and tiletamine/zolazepam (DZ), and the combination of medetomidine, tiletamine/zolazepam and tramadol (DZT) in Beagle dogs. Ten healthy adult Beagle dogs (weighing $8.6{\pm}1.0kg$) were enrolled in this study. Heart rate (HR), fractional shortening (%FS), left ventricular ejection fraction (%LVEF), stroke volume (SV), cardiac output (CO), left ventricular internal diameter in systole (LVIDs) and left ventricular internal diameter in diastole (LVIDd) using M-mode echocardiography were measured prior to anesthesia, then every 10 min for 60 min. The HR, %FS, %LVEF, SV and CO were significantly decreased during sedation/anesthesia with D, DZ and DZT combination of anesthesia. Although those anesthetic protocols provided acceptable quality of sedation/anesthesia, levels of cardiovascular suppression were substantial and persistent and thus the continuous monitoring on vital signs should be accompanied in any situation. Close attention is required for dogs with pre-existing heart diseases, when those anesthetic protocols were applied.