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      • KCI등재

        기능적 척수조영술을 이용한 윤상섬유팽창증과 추간판탈출증의 감별소견

        박충기 대한영상의학회 1988 대한영상의학회지 Vol.24 No.4

        Herniated disk and bulging annulus are the major causes of lower back pain. It is necessary to differentiate bulging annulus from herniated disk because of their different methods of treatment. Myelography is one of the useful diagnostic methods for disk diseases even though advanced diagnostic modalities such as CT and MRI are more accurate. Functional myelography is not a new technology except for two additional views flexion and extension are obtained with conventional myelography. Diffentiation between bulging annulus and herniated disk by conventional myelography is based on the extent and multiplicity of extradural deformity of the contrast filled dural sac and neural sleeve as well as the changes of nerve root. There is no previous report about differential points between bulging annulus and her-niated disk according to functional myelography. It is the purpose of this study to find any additional differential points on functional myelography between bulging annulus and herniated disk over conventional myelography. Authors analysed functional myelographic findings of 152 cases from July 1986 to July 1987. Among them 22 cases who had been suffered from cervical abnormality or vague lower back pain were diagnosed as normal by myelography and 30 cases of L4-5 herniated disk and 21 cases of L4-5 bulging annulus which had been finally diagnosed by operation were studied. The results were as follows. 1. In normal group anterior epidural space was gradually widened from the upper lumbar vertebra downward. And anterior epidural space was more widened at the disk level in extension view than in flexion except for L5-S1 level. 2. In bulging annulus group the shape of graph of anterior epidural space in flexion state was as similar as normal. Anterior epidural space in extension state was more widened at the buldging annulus than normal, but lesser than herniated disk. 3. In herniated disk group widening of anterior epidural space at the herniated disk level was persistent in both flexion and extension views and much more exaggerated in extension, 4. In herniated disk group anterior epidural space above the lesion was normal but widened at the vertebral body level just below the lesion.

      • KCI등재
      • KCI등재

        만성 수은 증기 중독의 흉부 X-선 및 고해상 전산화단층촬영 소견

        박충기 대한영상의학회 1993 대한영상의학회지 Vol.29 No.5

        Authors analyzed the findings of chest radiographs and high-resolution CT (HRCT) of chronic mercury vapor poisoning in 12 patients who were diagnosed by previous working history for mercury- thermometer and high level of merucry in blood and urine. The purpose of this paper is to introduce the HRCT findings of chronic mercury vapor poisoning. Duration of mercury exposure was ranged from 10 to 41 months(mean, 21.8 months). Estimated value of serum mercury was ranged from 3.6 to 8.7$\mu\textrm{g}$/dI(mean, 5.3$\mu\textrm{g}$/dI : normal value is less than 0.5$\mu\textrm{g}$/dI). Estimated value of mercury in urine was ranged from 104 to 482$\mu\textrm{g}$1(mean, 291.4$\mu\textrm{g}$/1:normal value is less than 20$\mu\textrm{g}$ /1). Chest radiographs showed positive findings such as ground-glass opacities and peribronchial cuffings in only 2 out of 12 patients, but HRCT showed positive findings such as ground-glass opacities in 8 patients. peribronchial cuffings in 7 patients, centrilobular abnormalities in 5 patients, interface sign in 4 patients, interlobular septal thickening with intralobular lines in 2 patients and lobular consolidation in one partient. In conclusion, chest HRCT is superior to chest radiograph to show the pulmonary manifestation of chronic mercury vapor poisoning. In patients with chronic mercury vapor poisoning. HRCT findings of centrilobular distributed ground-glass opacities and peribronchial cuffinges are characteristic.

      • KCI등재

        전산화 단층촬영술을 이용한 가토 지방간의 정량적 평가에 관한 실험적 연구

        박충기 대한영상의학회 1985 대한영상의학회지 Vol.21 No.5

        For the study of conrrelation of CT number and fatty content of the liver, total 35 rabbits were used. The rabbits were divided into one control and three experimental groups according to the amount of carbon tetrachloride, administered 1 ml, 2 ml and 3 ml per kg of body weight respectively. The carbon tetrachloride was administered via intragastric route. CT was performed 72 hours following administration of carbon tetrachloride, and immediately prior to CT scan each rabbit was anesthetized by means of IM injection of ketamine and IV injection of succinyicholine to stop motion and respiration. CT numbers were measured and histological study for the deposition of fat in the liver tissue was done. Also biochemical analysis of lipid in the blood and in the extraction of liver tissue was performed. Comparison of CT number with biochemical and histological data was done. The results were as follows: 1. In each experimental group, the degree of accumulation of fat in the liver was roportional to the amount of carbon tetrachloride. 2. Degree of decreasing CT number was corrlated with the increase in the accumlation of fat in the liver. 3. In the control and experimental (1, 2, 3) groups, when the amount of carbon tetrachloride increased, the amount of total lipid, cholesterol and triglyceride on biochemical analysis of the liver increased. Also increase in the amount of plasma lipids on biochemical analysis and a great degree of increase in accumulation of fat in the liver on histological examination were seen. But no changes in the amounts of phospholipid and protein on biochemical analysis of the liver were noticed. 4. Increase in the amount total lipid could make a change in the CT number of the liver remakably(r=-0.63). As the amount of cholesterol and triglyceride increased, the CT number of the liver decreased(r=-0.61 and r=-0.76 respectively.) But there was no significant correlation between the amount of protein and phospholipid and the degree of decrease in CT number. 5. Mean values of CT number in formal, grade 1, grade 2, grade 3 and grade 4 according to the degree of histological changes were 67.46$\pm$2.24, 58.53$\pm$0.36, 49.43$\pm$6.81, 39.49$\pm$9.69, 20.62$\pm$8.04 respectively. The reduction of CT number was correlated with the accumulation of fat on histological examination.

      • KCI등재

        지속성 원시설하 동맥 - 1예 보고 -

        박충기 대한영상의학회 1979 대한영상의학회지 Vol.15 No.1

        Three kinds of carotid-basilar anastomosis have been found, they were named as persistent primitive trigeminal artery, persistent primitive acoustic (or otic) artery and persistent primitive hypoglossal artery, among them, the persistent primitive hypoglossal artery is by far the least common type of the internal carotid-basilar anastomosis which have been demonstrated in human postembryonic stages. Persistent primitive hypoglossal artery is usually found incidentally. This vascular anomaly, however, have been reported to be associated with multiple congenital anomalies, such as unilateral or bilateral vertebral artery hypoplasia, abscence of the posterior communicating attery, hypoplasia of the proximal portion of the posterior cerebral artery, aneurysm of the circle of Willis, the origin of both pericallosal arteries from a single anterior cerebral artery, retarded mental development dating from infancy, carotid-cavernous fistula formation etc. A case of persistent primitive hypoglossal artery in an young Korean male was reported with brief review of the lrterature.

      • SCOPUSKCI등재

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