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박재형 대한영상의학회 1985 대한영상의학회지 Vol.21 No.1
Angiographic findings were analysed in 22 cases of coronary occlusive disease which were selected from 50 cases of coronary arteriographies done in Department of Radiology, Seoul National University Hospital from September, 1981 to August, 1984. There were 16 cases of single vessel disease, in which 12 were LAD involvement and 4 were RCA involvement, 2 cases of two vessel and 4 cases of three vessel disease. Site, degree and extent of stenotic invelvement in those occlusive coronary diseases were analysed with review of literature for selective coronary arteriography. Since coronary arteriography is the final and accurate examination for the evaluation of occlusive coronary arterial disease, it is expected to be widely used for the diagnosis of occlusive coronary arterial disease which is rapidly increasing recently in this country.
박재형,김성수,정진욱,정중기,정인목,민승기,하종원,김상준 대한혈관외과학회 1999 Vascular Specialist International Vol.15 No.1
The operative treatment of abdominal aortic aneurysm (AAA) is generally recommended in ruptured AAA, symptomatic or rapidly expanding AAA, complicated AAA and atypical aneurysms, but there is a controversy in treatment of asymptomatic small-sized AAA. To determine the proper management plan, it is important to know the natural history of AAA, expansion rate and frequency or pattern of complications. There are several reports about the natural history of AAA in western population, but little has been reported in Koreans. Authors performed this study in order to analyze the natural history of small AAA, and to establish a guideline in the proper management of small AAA. Patients & Methods: Since January 1991, among the patients diagnosed as AAA at Seoul National University Hospital, we followed 15 patients whose aneurysm size was less than 6 cm without operation. In this study, we analysed the natural history of 11 cases with more than 6 months follow up; occurrence of symptoms, physical examinations, and aneurysm size measurement by ultrasound or CT every 6 months. Results: All 11 patients were men, and the mean age was 63.9 years, ranging 54 to 75 years. According to the measurement of largest transverse diameter, mean expansion rate for 6 months was 0.17±0.138 cm. Follow-up period ranged 6∼84 months and the median duration was 30 months. Expansion rate according to the initial size was 0, 0.246, 0.178, 0.1 cm/6 months respectively in group A (<2.9 cm; 1 case), B (3.0 ∼3.4 cm; 3 cases), C (3.5 ∼3.9 cm; 6 cases), D (>4.0 cm; 1 case). There was no rupture, aneurysm-related complication, nor death during the follow-up period. We performed elective operations in 2 cases, first case due to aneurysmal expansion over 6 cm, and the other due to severe anxiety of the patient for rupture. Conclusion: It may be a safe treatment discipline to follow up small AAA patients with sono-guided size measurement and elective operation in selected cases.$quot;
박재형 대한영상의학회 1983 대한영상의학회지 Vol.19 No.3
Percutaneous removal of residual biliary stone was performed through T-tube tract in 10 patients at the Department of Radiology, College of Medicine, Seoul National University from November, 1982 to May, 1983. For percutaneous biliary stone removal is easy to perform, high in success rate, applicable in outpatient and negligible in complication, active clinical application of the percutaneous removal is recommended as the primary method for residual stone instead of surgical re-operation.
박재형,김홍득,권영우,김용권,Park, Jae-Hyoung,Kim, Hong-Teuk,Kwon, Young-Woo,Kim, Yong-Kweon 대한전기학회 2000 전기학회논문지C Vol.55 No.12
In this paper, new micromachined tunble bandpass filters for multi-band millimeter-wave telecommunication systems are proposed. Two types of mm-wave tunable filters are fabricated using micromachning technology and the responses of the filters are measured. One is two-pole lumped elements filter and the other two-pole resonators filter. Frequency tunability of the filter is achieved by changing the gap between a common CPW ground plate and the movable cantilever beam connected to the transmission line with the controllable renge of 2.5${\mu}m$. The deflection of cantilever beam is measured with the applied DC voltage. With the applied bias voltage from 0 to 50 V, the fabricated filters show 0.6 GHz(2.3%) at 26.6 GHz, and 0.8 GHz(2.5%) at 32 GHz center frequency shift for the lumped elements and resonators filter, respectively. The life time of the fabricated gold cantilever structure are tested.
오지(五遲) 오연(五軟) 오경(五硬) 유아(幼兒)의 임상면접지 분석
박재형,윤영주,박재현,백은경,Park, Jae-Hyung,Yun, Young-Ju,Park, Jae-Hyun,Paeck, Eun-Kyung 대한한방소아과학회 2010 대한한방소아과학회지 Vol.24 No.2
Objectives Taking detailed patient history helps earlier diagnosis and treatment of developmental disability. In this study we analyzed the clinical questionnaire to find out the clinical characteristics of those with five-retardation, five-limpness, or five-stiffness. Methods The data was collected from 484 children under the age of six who have visited H oriental medicine clinic for developmental delay. The clinical questionnaire was filled out by their parents and the data was analyzed statistically. Results 436 children showed symptoms of five-retardation, 90 children suffered from five-stiffness, 54 children showed five-limpness and 7 children suffered from five-stiffness and five-limpness complex. Generally, boys had higher chance to show disease symptoms than the girls (2.32:1) and 40 children (8.26%) reported family history of developmental disability. Cerebral palsy ranks the most common familial disease, followed by developmental delay, mental retardation, autistic disorder and language disorder. Among the children we have studied, 285 children (63.19%) showed delayed unassisted walk while 192 children (42.57%) had language disorder. Also, 138 children (28.51%) had both walk and language disorders. The children in this study also showed delayed toilet training and half of them had little stranger anxiety when they were infants. It was also found that 120 children (24.79%) experienced epilepsy. This study reaffirmed that low birth weight, premature birth, and suffocation are major risks causing neurological damage. Conclusions They had history which including family history, problems at birth, epilepsy, face recognition, muscle tone disorder, delayed walking without assistance, language ability, and toilet training.
박재형,유정현,김주학 대한수부외과학회 2012 대한수부외과학회지 Vol.17 No.4
Double dislocation of the interphalangeal joints in a single digit is very rare. We describe the results of conservative treatment for the double interphalangeal dislocations of 5th finger caused by hyperextension during bicycle accident. 단일 수지에 발생된 지간 관절 동시 탈구는 매우 드물게 볼 수 있는 증례로서 본 저자들은 자전거를 타던 중 넘어지며과신전으로 발생한 제5수지의 지간 관절 동시 탈구에 대해 보존적 치료를 시행한 예를 경험하였기에 보존적 치료의 결과를 보고하고자 한다.
박재형 대한영상의학회 1985 대한영상의학회지 Vol.21 No.1
Transcatheter arterial embolization was applied in 7 cases of hepatic desease including hemobilia of various causes and malignant tumors at Department of Radiology, Seoul National University Hospital during recent several years. The embolic materials were autologous blood clot and Gelfoam particle. Successful control of bleeding or devascularization of tumor vessel was made in 6 of the 7 patients. There was no serious complications; however, post embolization syndrome was found including pain, fever, nausea and vomiting in all cases and subsided after a few days. Transcatheter hepatic arterial embolization is suggested to be a safe and effective treatment in control of hemobilia and devascularization of malignant hepatic tumors.