No abstract available.
Anus, Imperforate*

No abstract available.
Urinary Tract Infections* ; Urinary Tract*

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 Un iversity 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 involvement in those occlusive coronary diseases were anal ysed with review of literature for selective coronaryarteriography. 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.
Angiography ; Coronary Disease ; Diagnosis ; Seoul ; United Nations

A Clinical observation was made on five patients with ruptured aortic sinus of Valsalva who visited Seoul National university hospital during the period of May, 1975~Jan., 1980. 1. Age distribution was from 19 to 32 years and four patients were male and the rest one case was female. 2. Chief complaints on admission were dyspnea in 3 cases and chest pain in 2 cases. Onset of symptoms was abrupt in 4 cases. 3. Continuous murmur was heard at third and fourth intercostal space along left sternal border with thrill in all cases. 4. Cardiac catheterization and aortography showed regurgitant flow from aorta to right ventricle in all cases. 5. Operation was done successfully in 3 cases, of which aortic insufficiency was persistent in one case.
Age Distribution ; Aorta ; Aortography ; Cardiac Catheterization ; Cardiac Catheters ; Chest Pain ; Dyspnea ; Female ; Heart Ventricles ; Humans ; Male ; Seoul ; Sinus of Valsalva*

No abstract available.
Humans ; Quality of Life*

No abstract available.
Biopsy* ; Child* ; Humans

No abstract available.
Brain Stem Infarctions*

The study was undertaken to evaluate the effect of major blood components on the CT number. The CT numbers according to the various levels of hematocrit, total protein and cholesterol were checked and analysed by the dilution of pack cell, plasma and 184 complete blood cell count samples under same scanning conditions. In case of normal protein and cholesterol level(33 samples), the CT number was increased about 5.5 hounsfield unit according to 10% increase of hematocrit level: and In case of normal hematocrit and cholesterol level(39 samles), the CT number was increased about 3.5 hounsfield unit according to 1gm% increase of protein level. CT number changes were not predictable according to the changes of cholesterol level(34 samples). From these results, we concluded that major blood components should be considered in the CT number analysis of tissue.
Blood Cell Count ; Cholesterol ; Hematocrit ; Plasma Cells

STATEMENT OF PROBLEM: Chronic implant screw loosening remains a problem in restorative practices. Some implant manufactureres have introduced abutment screws with treated material, surfaces and macrostructures in an effort to reduce potential loosening. PURPOSE: This study evaluated the materials and loading cycles on detorque value after dynamic continous fatigue test in the sinulated conditions of posterior single restoration. MATERIAL AND METHOD: Fourteen of each of the following abutment screws - titanium alloy, gold alloy, gold-tite, and titanium alloy modified - were used in test. SEM is used to verify macrostructures of each screws. ZrO2/Al2O3 composite abutment was tightened on 4x10.0mm titanium external implant at 30 Ncm. Cyclic loading machine delivered dynamic loading forces between 20 and 320N for 100,000, 200,000, 300,000, 500,000, and 1,000,000 cycles at frequencies 14Hz. Torque and detorque value after loading was measured. RESULTS: All measued screws had different screw length and thread form. Titanium modified screw had greater detorque value than others before and after cyclic loadings(p<0.05). All abutment screws had no significant change in mean percentage of detorque value after loading to initial value after less than 500,000 cyclic loadings, but significant lower value after 1,000,000 cycles(p<0.05). CONCLUSION: Within limintations of this study, all abutment screws may be loosend after about1 year use. Annual check-up is nessasary to prevent screw loosening.

PURPOSE: The objective of this study is to observe high-resolution computed tomography (HRCT) findings of lung parenchyme in very low birth weight (VLBW) infants between the corrected age of 38-42 weeks who were treated with oxygen after birth, and to compare them to the clinical severity of bronchopulmonary dysplasia (BPD). METHODS: The lungs of fourty-four VLBW infants with gestational ages of less than 32 weeks and birth weights of less than 1,500 g who were treated with oxygen after birth were examined using HRCT taken when the corrected age was between 38-42 weeks. Common findings among the infants and the frequency of their occurrences were noted. Total CT scores obtained by the summation of air trapping and actelectasis scores and the ratio of bronchus-to-pulmonary artery diameter were used to quantitatively evaluate HRCT findings and correlate them with the clinical severity of BPD as defined by Jobe-Bancalari diagnostic criteria. RESULTS: 1) The most common findings in HRCT images of the lungs were air trapping (56%), atelectasis (70.5%), linear opacity (77%), and distortion of the bronchopulmonary bundle (65.9%). These findings were more commonly observed in infants with BPD in a mixed pattern than those without (P<0.05). However, abnormal findings were also found in HRCT images of some infants without BPD. In infants with BPD, air trapping, atelectasis and total CT scores were higher than those without BPD. Also infants with BPD had a lower bronchus-to-pulmonary artery diameter than those without BPD (P<0.05). 2) The total CT scores (r=0.799, P<0.0001) and the ratio of bronchus- to-pulmonary artery diameter (r=0.576, P<0.0001) showed a linear correlation with the clinical severity of BPD. CONCLUSION: HRCT findings in VLBW infants between the corrected age of 38-42 weeks who had been treated with oxygen after birth are useful in revealing pathologic changes in the lung parenchyme and show a good correlation with the clinical severity of BPD.
Arteries ; Birth Weight ; Bronchopulmonary Dysplasia ; Gestational Age ; Humans ; Infant* ; Infant, Newborn ; Infant, Very Low Birth Weight* ; Lung* ; Oxygen Inhalation Therapy ; Oxygen* ; Parturition ; Pulmonary Atelectasis