No abstract available.
DNA* ; Nucleic Acid Hybridization*

No abstract available in English.
Arthroplasty ; Friction ; Hip ; Tuberculosis

PURPOSE: To analyze the variable MRI features and clinical significance of intracranial cavernous realformation. MATERIALS AND METHODS: Forty patients(mean age 35.4) with cavernous malformation were evaluated by MRI. Eleven patients were surgically confirmed. Cavernous malformations were divided into four categories on the basis of the MR imaging characteristics, especially on T2-weighted image. Type I lesion was defined as an extralesional subacute hemorrhage outside the low signal rim, type II as an intralesional hemorrhage surrounded by low signal rim, type III lesion as an intralesional thrombosis with variegated central core surrounded by low signal rim, and type IV lesion as a focal old hemorrhagic core with small low signal intensity. Type IV was further divided into IVa and IVb, whether the lesion has small iso- or hypersignal central core (IVa) or not (IVb). Follow-up MRI was evaluated in 12 patients who were managed conservatively. Follow-up intervals ranged from 2 weeks to 29 months (mean 6months). RESULTS: Total 80 lesions were detected in 40 patients. Multiple lesions were noted in 10 patients. The topography of the cavernous malformations was supratentorial in 75% and infratentorial in 23%. There were 10 lesions in type I, 15 in type 11, 21 in type III, 14 in type IVa, and 20 in type IVb. Type I lesions mainly showed mass effect and edema. Type III lesions showed minimal contrast enhancements in 7 lesions on delayed images. Type II lesions showed the characteristics of both type I and type III lesions. On follow up images, decrease in size in 5, change of type in 7, rebleeding in 2 and no change in 12 lesions were demonstrated. Hemorrhage, edema and mass effect were combined in the cases of rebleeding. On follow-up study, the estimated risk of bleeding was 32.3%/person-year and 13.7%/lesion-year. CONCLUSION: Cavernous realformations show as variable appearance, on MR imaging suggesting variable stages of evolution. The MR morphologic classification and evaluation of secondary findings are helpful to predict natural course and possibility of rebleeding of the lesion.
Classification ; Edema ; Follow-Up Studies ; Hemorrhage ; Humans ; Magnetic Resonance Imaging* ; Thrombosis

We have detailed our experiences on 6 cases of neonatal lethal short- limbed dwarfism and reviewed thearticles. They include, achondrogenesis, thanatophoric dysplasia, asphsiating thoracic dysplasia, osteogenesisimperfecta congenita, and hypophosphatasia lethalis. Five babies were born alive but died soon after birth and onewas a stillbirth. The main cause of failure to thrive was respiratory insufficiency. Each case was having quitecharacteristic radiologic findings, even if the genearl appearances were similar to the achondroplasts clinically.Precise diagnosis is very important for genetic counselling of the parents and alarm to them the possibility ofbone dysplasias to the next offsprings. For this purpose, the radiologists play major role for the correctdiagnosis. We stress that when the baby is born with short-limbed dwarfism, whole body radiogram should be takenincluding lateral view and postmortem radiogram is also very precious.
Diagnosis ; Dwarfism ; Extremities ; Failure to Thrive ; Humans ; Hypophosphatasia ; Parents ; Parturition ; Respiratory Insufficiency ; Stillbirth ; Thanatophoric Dysplasia

In order to investigate the mechanism of antibacterial effect of electrical stimulation on bone and joint infection, 5, 50 and 500 µA constant currents were passed through the silver electrodes and stainless electrodes on the Brain Heart Infusion agar culture plates which contained Staphylococcus aureus, Pseudomonas aeruginosa, and Lscherichia coli. After 24 hours of incubation, the widths of inhibitory zone around the electrodes were measured. The broth dilution susceptibility test was also used to verify the antibacterial effects of electrically generated silver in the Brain Heart Infusion broth. The results were as follows. 1. Silver anodes using constant currents manifested antibacterial effects definitely on the three bacterias, but stainless anodes showed none. 2. Antibacterial effects of silver anodes on the three bacterias increased in proportion to current density. However, antibacterial effects were negligible when current density was under 2 nA/mm2. 3. When current density was between 6.6 and 660 nA/mm2, there were no statistically significant differences in the antibacterial effects among 5, 50 and 500µA constant currents. 4. The culture broth containing silver ions generated by constant current electrolysis also manifested antibacterial effects. The retentate showed stronger antibacterial effects than the filtrate. Form these results, following conclusions were drawh. 1. The antibacterial eff ct of silver electrode using constant current was due to silver ions rather than electricity itself. 2. The substance which showed most effective antibactericity effects was silver complex larger than 2,000 m.w. and heat-unstable.
Agar ; Bacteria ; Brain ; Electric Stimulation ; Electricity ; Electrodes ; Electrolysis ; Heart ; Ions ; Joints ; Pseudomonas aeruginosa ; Silver ; Staphylococcus aureus

The authors performed a retrospective matched-pair study for 54 uncemented total hip arthroplasties which were performed in management of avascular necrosis of femoral head from July, 1989 to May, 1991 to investigate what kind of stem is better between Anatomic stem as a proximal filling stem and Harris-Galante stem as a distal filling stem. The results were as followings: 1. Clinical results of Anatomic group were slightly better than those of Harris-Galante group in terms of incidence of thigh pain, groin or buttock pain and final functional score of hip. 2. Incidence of radiolucency around femoral stem in Harris-Galante group was higher than that in Anatomic group, especially in zone I, V of anteroposterior view and in zone IV of lateral view, which were statistically significant(p < 0.05). 3. The incidence of vertical subsidence of femoral stem in Harris-Galante group was significantly higher than that in Anatomic group(p < 0.05) and the average distance of subsidence was 3.2mm. 4. The incidence of endosteal osteolysis and bone resorption in Harris-Galante group was higher than that in Anatomic group. 5. In overall view, clinical and radiographic results of Anatomic group were better than those of Harris-Galante group.
Arthroplasty ; Arthroplasty, Replacement, Hip ; Bone Resorption ; Buttocks ; Groin ; Head ; Hip ; Incidence ; Necrosis ; Osteolysis ; Retrospective Studies ; Thigh

Decentralization to local governments and amending of Health center Law are to promote the efforts of health planning at the level of local agencies. In the health facility planning, it is important to take into account that what to be built, where to be located, how far should be service area and so forth, because health facilities are immovable, and require capital as well as personnel and consumable supplies. The aim of our study, answering to the question of 'where to be located?`, is to determine the best location of urban health sub-center. At the local level, planning is the matter of finding the best location of specific facility, in relation to population needs. We confine the accessibility, which is basic to location planning, to geographic one. Location-Allocation Model is used to solve the problem where the location is to maximize geographic accessibility. To minimize the weighted travel distance, objective function, Rk= aijwidij is used. Distances are measured indirectly by map measure-meter with l:25,000 Suwon map, and each potential sites, 10 administrative Dongs in Kwonson Gu, Suwon, are weighted by each number of households, total population, maternal age group, child age group, old age group, Relief for the livelihood, and population/primary health clinics. we find that Kuwoon-Dong, Seodun-Dong, Seryu3-Dong, according the descending orders, are best sites which can minimize the weighted distance, and conclude that it is reasonable to determine the location of urban health sub-center among those sites.
Child ; Equipment and Supplies ; Family Characteristics ; Gyeonggi-do ; Health Facilities ; Health Facility Planning ; Health Planning ; Humans ; Jurisprudence ; Maternal Age ; Politics ; Urban Health*

No abstract available.
Gestational Age* ; Humans ; Infant, Newborn*

The authors experienced 21 myasthenia gravis patients who were admitted to Kyung Hee University Hospital and Han Yang University Hospital from March 1979 to August 1983. Following results were obtained through treatment and follow up evaluation. 1. There was no sexual difference between male and female, of 21 patients male to female ratio was 10:11. The prevalent age group was 20s and 30s. (10 of 21 patients, 47.6%). 2. The most common initial symptom was ptosis (71.4%), followed by diplopia (38.0%), generalized muscle weakness (38.0%), swallowing difficulty(19.0%), Mastication difficulty (9.5%), dysarthria (4.8%), respiratory difficulty (4.8%), in order. 3. Among 21 patients, thymomas were found in 2 patients. (9.5%) 4. According to the modified Osserman's classification, the peak incidence group was IIA (7 cases, 33.3%) then IIB (5 cases, 23.8%). Group III and neonatal type were not seen. 5. In 14 patients (66.6%), diagnosis was made within 1 year after the onset of the symptoms, but the other 7 patients (33.3%) spent more than 1 year for the diagnosis. 6. All patients who received corticosteroid therapy or thymectormy were improved significantly after the treatment. 7. After the discharge, 3 patients (14.3%) make normal life, on the other hand 17 patients (80.9%) are in more or less restricted life.
Classification ; Deglutition ; Diagnosis ; Diplopia ; Dysarthria ; Female ; Follow-Up Studies ; Hand ; Humans ; Incidence ; Male ; Mastication ; Muscle Weakness ; Myasthenia Gravis* ; Thymoma

The authors experienced 21 myasthenia gravis patients who were admitted to Kyung Hee University Hospital and Han Yang University Hospital from March 1979 to August 1983. Following results were obtained through treatment and follow up evaluation. 1. There was no sexual difference between male and female, of 21 patients male to female ratio was 10:11. The prevalent age group was 20s and 30s. (10 of 21 patients, 47.6%). 2. The most common initial symptom was ptosis (71.4%), followed by diplopia (38.0%), generalized muscle weakness (38.0%), swallowing difficulty(19.0%), Mastication difficulty (9.5%), dysarthria (4.8%), respiratory difficulty (4.8%), in order. 3. Among 21 patients, thymomas were found in 2 patients. (9.5%) 4. According to the modified Osserman's classification, the peak incidence group was IIA (7 cases, 33.3%) then IIB (5 cases, 23.8%). Group III and neonatal type were not seen. 5. In 14 patients (66.6%), diagnosis was made within 1 year after the onset of the symptoms, but the other 7 patients (33.3%) spent more than 1 year for the diagnosis. 6. All patients who received corticosteroid therapy or thymectormy were improved significantly after the treatment. 7. After the discharge, 3 patients (14.3%) make normal life, on the other hand 17 patients (80.9%) are in more or less restricted life.
Classification ; Deglutition ; Diagnosis ; Diplopia ; Dysarthria ; Female ; Follow-Up Studies ; Hand ; Humans ; Incidence ; Male ; Mastication ; Muscle Weakness ; Myasthenia Gravis* ; Thymoma