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최연현 대한영상의학회 1986 대한영상의학회지 Vol.22 No.1
Congenital anomaly of IVC is rare, but understanding of this anomaly is important in radiological diagnosis, angiographic procedures and mojor retroperitoneal and thoracic surgery. We analysed 23 cases of IVC interruption diagnosed by cardiac angiography at Seoul National University Hospital. The results were as follows : 1. The incidence of infrahepatic interruption of IVC was 0.45% of the patients having cardiac angiography and most patients showed cyanosis(91%). 2. The most common associated cardiac anomaly was right ventricular outflow tract obstruction(60%). Other associated cardiac defects were VSD, ASD, valvular anomalies in 9 cases(39%) respectively : double outlet right ventricle, bilateral superior vena cava, single ventricle in 6 cases(26%) repectively : single atrium, PDA in 5 cases (22%) repectively. 6 cases of situs inversus, 3 cases of situs ambiguus, 2 cases of visceral heterotaxia and one case of asplenia were observed also. 7 case of left-sided IVC were assoc ated with IVC interruption in normal situs.
혈관내 삽입된 Gianturcl형 스텐트가 혈관 구조에 미치는 영향에 관한 실험적 연구
최연현 대한영상의학회 1991 대한영상의학회지 Vol.27 No.4
Twenty-seven Gianturco-type self-expandable stainless steel intravascular stents were placed into the infrarenal abdominal aortas(n=17) and inferior venae cavae(n=10) in 14 mongrel dogs. In 8 aortas, stents were delivered after balloon catheter-induced denudation of the intima, and in 4 out of the 8 aortas, the stents were also placed into the normal sites to compare the neointimal thickness of the normal and denuded sites. Angiography, light microscopic, and scanning electron microscopic examinations were performed after 1 week. Nearly complete transparent neointimal covering was found in the aortas and caval veins after 2 weeks. There was no significant difference in intimal thickness between the denuded and normal aortas after 2 weeks (p=0.51) and 3 weeks(p=0.56). In 4 dogs with caval vein stents, there was evidence of hemorrhagic infarction in the lungs. The thrombosis rate of 12 stents with a stent-artery ratio(SAR) of 1.5 or higher was 41%, while there was no thrombus on the 4 stents with SAR 1.2 or lower, except for 1 specimen after 1 week. It is suggested that stents with SAR 1.2 or lower are more suibtable. The high thrombosis rate of the inferior vanae cavae may be related with slow blood flow.
최연현 대한뇌졸중학회 2001 Journal of stroke Vol.3 No.1
경동맥은 초음파 검사로 비교적 쉽게 접근할 수 있는 중요한 혈관이다.최근에 발달한 기술과 장비로 인해 고해상도의 영상을 얻을 수 있으며 조직 대조도가 향상되었다.내경동맥 협착과 추골동맥 기시부를 관찰하기 위해서 동맥의 해부학적 변이와 이중 도플러 검사의 원리를 숙지하여야 한다. Korean Journal of Stroke 2001;3(1): 31~39