PURPOSE: To determine the accuracy of automated computer aided volumetry for simulated small pulmonary nodules at computed tomography using various types of phantoms MATERIALS AND METHODS: Three sets of synthetic nodules (small, calcified and those adjacent to vessels) were studied. The volume of the nodules in each set was already known, and using multi-slice CT, volumetric data for each nodule was acquired from the three-dimensional reconstructed image. The volume was calculated by applying three different threshold values using Rapidia(R) software (3D-Med, Seoul, Korea). RESULTS: Relative errors in the measured volume of synthetic pulmonary nodules were 17.3, 2.9, and 11.5% at -200, -400, and -600 HU, respectively, and there was good correlation between true volume and measured volume at -400 HU (r=0.96, p<0.001). For calcified nodules, relative errors in measured volume were 10.9, 5.3, and 16.5% at -200, -400, and -600 HU, respectively, and there was good correlation between true volume and measured volume at -400 HU (r=1.03, p<0.001). In cases involving synthetic nodules adjacent to vessels, relative errors were 4.6, 16.3, and 31.2 % at -200, -400, and -600 HU, respectively. There was good correlation between true volume and measured volume at -200 HU (r=1.1, p<0.001). CONCLUSION: Using computer-aided volumetry, the measured volumes of synthetic nodules correlated closely with their true volume. Measured volumes were the same at each threshold level, regardless of window setting.
Cone-Beam Computed Tomography ; Seoul

No Abstract Available.
Adenoviridae* ; Coinfection* ; Herpesvirus 3, Human* ; Humans ; Synovial Fluid* ; Synovitis*

A clinical observation of the nail pigmentation change was made on 200 patients receiving cancer chemotheray who were seen at; the Department of Internal Medicine, Seoul National University Hospital, from January through May, 1986. The results were as follows: l. Among the 200 patients, 118 cases(59%,) showed nail pigmentation changes. 2. The patterns of nail pigmentation change were as follows: Parallel transverse band(70 cases 59.3%), longitudinal pigmentated band(32 cases, 27. 1%), brown arc(25 cases, 21. 2%), Proximal black pigmentation(10 cases, 8. 5%), diffuse pigmentation(5 cases, 4.2%), parallel transverse white line(5 cases, 4.2%), half and half nail(3 cases, 2. 5%), pigmentations with transverse white band(1 case, 0. 8%). 3. Various cambinations of nail pigmentation pattern were found in 33 patients (28. 0%). 4. 11 cases of the nail dystrophy with nail pigmentation change were observed: Longitudinal ridge(7 cases), transverse groove(3 cases), wavy transverse fissure (1 case).
Drug Therapy* ; Humans ; Internal Medicine ; Pigmentation ; Seoul

A clinical observation of cutaneous complications was made on 200 patients receiving cancer chemotherapy at the Department of Internal Medicine, Seoul National University from January through May, 1986. The results were as follows: 1. Among the 200 patients, 191 case(95. 5%) showed cutaneous complications 2. The cutaneous complications included the following; hyperpigmentation(14l cases, 70. 5%), alopecia(138 cases, 69.4%), nail change(118 cases, 59.0%), mucositis(47 cases, 23.5%), dryness of the skin(40 cases, 20.0%), seborrheic dermatitis(24 cases, 12. 2%), increase of seborrheic keratosis(11 cases, 5.6%), folliculitis or acneiform eruptions(9 cases, 4,5%), melasma(6 cases, 3.0%), gynecomastia(3 cases, 1.5%), vessel hardening or dimpling(3 cases, 1.5%), radiation recall(2 cases, 1.0%), hyperhydrosis(2 cases), photosensitivity(1 case, 0.5%), tissue necrosis(1 case), facial flushing(1 case), purpura(1 case) and obesity(1 case), 3 Steps were taken to determine the chemotherapeutic agents causing these cutaneous complications, though in some cases it was difficult in determining exaetlr which chemotherapeutic agent was the cause of the observed cutaneous complication.
Drug Therapy* ; Folliculitis ; Humans ; Internal Medicine ; Seoul

This study was performed to investigate the factors related to tooth wear. For this study, 78 patients with temporomandibular disorders and 76 dental students without any signs and symptoms of temporomandibular disorders were selected as the patients group and as the normal group, respectively. Preferred chewing side, Angle's classification, lateral guidance pattern, head and shoulder posture wee observed clinically. Electromyographic activity of anterior temporalis and masseter muscle were recorded with BioEMG and occlusal status were recorded with T-Scan . Wear facet area of each tooth was measured from working model of upper arch corresponding to the occlusal status from T-Scan, Wear facet area were measured with planimeter in mm2. Total area were divided into incisal, canine, posterior tooth area. Anterior wearfacet area was incisor area plus canine area, and unilateral area was anterior area plus posterior area. The data collected were analyzed by SAS statistical program and the results of this study were as follows: 1. There was no significant difference between the two groups in total werafacet area, and male subjects showed tendency to have larger area in the normal group but female subjects showed tendency vice versa. 2. There was no significant difference related to preferred chewing side and Angle's classification, however, some difference was observed by lateral guidance pattern. Anterior wear facet area in subjects of canine guidance was the largest in the three subgroups. 3. Subjects with head tilting to right side had larger posterior and total area, and subjects with higher shoulder in right side had larger canine and anterior area than any other subgrous. 4. Electromyographic activity of masseter muscle was more correlated with wear facet area than anterior temporalis muscle, and tooth contact number and force were significantly correlated with wear facet area, but the most important factor affecting tooth attrition was age.
Dental Occlusion ; Female ; Head ; Humans ; Incisor ; Male ; Malocclusion ; Masseter Muscle ; Mastication ; Posture ; Shoulder ; Students, Dental ; Temporomandibular Joint Disorders ; Tooth Attrition ; Tooth Wear* ; Tooth*

PURPOSE: To evaluate the incidence of disc extrusion and neurologic deficit, the relation between disc extrusion and neurologic deficit and the treatment results according to our basic treatment principles in lower cervical facet joint fracture and dislocations MATERIALS AND METHODS: Twelve patients were evaluated, 8 male and 4 female with an average age of 41 years comprised the group. Six injuries were attributable to automobile accidents, 5 to fall from building, bed, floor and hill, and one to stand on her head. One case was distractive-flexion stage (DFS) 1, 9 cases with DFS 2 and 2 cases with DFS 3. Plain X-ray, CT, Myelo CT and MRI were used as a diagnostic tools. As a treatment criteria, feasibility of closed reduction, status of neuroglogic injury, and stability of injured spine were considered. Anterior cervical discectomy and fusion in accompanied disc extrusion, posterior reduction and fusion with triple wiring in unreduced dislocation, and anterior decompression and fusion in incomplete cord and root injury were selected as a basic treatment principles. RESULTS: Ten out of 12 cases (83%) showed neurologic deficits, 2 complete cord injury, 1 incomplete cord injury, and 7 radiculopathy. Nine out of 12 (75%) demonstrated disc extrusion and all disc extruded patients had neurologic deficits. Anterior cervical discectomy and fusion (ACDF) were performed in 5 cases, ACDF and posterior reduction with triple wiring (PRTW) in 4 cases, PRTW in 1 case, and skull traction and philadelphia brace in 2 cases. Seven radiculpathy patients were completely recovered and one incomplete cord injury patient can ambulate with spastic gait after surgery. There were 2 bed sore and 1 pneumonia in complications. CONCLUSION: Soft disc extrusion should be evaluated carefully with MRI and CT in lower cervical spine injury with the facet joint fracture-dislocations before the decision of treatment. As disc extrusion always accompanies neurologic deficit, it must be surgically treated by anterior cervical discectomy and fusion.
Automobiles ; Braces ; Decompression ; Diskectomy ; Dislocations* ; Female ; Gait Disorders, Neurologic ; Head ; Humans ; Incidence ; Magnetic Resonance Imaging ; Male ; Neurologic Manifestations ; Pneumonia ; Pressure Ulcer ; Radiculopathy ; Skull ; Spine ; Traction ; Zygapophyseal Joint*

PURPOSE: To evaluate the change of the sensitivity and resistance to ciprofloxacin of isolates in bacterial ocular disease, bacterial keratitis and conjunctivitis. METHODS: From January 1992 to December 1999 in KyungHee Medical Center, we carried out direct smear and culture from conjunctiva and cornea and studied retrospectively. RESULTS: A total of 420 bacteria and fungi were isolated and 39 strains were identified. Antibiotic sensitivity test was done in isolated bateria and fungi. Gram-positive bacteria accounted for 324 of all bacteria, gram-negative organisms for 81 in isolated causative organisms. Major causative organisms of bacterial ocular disease, bacterial keratitis and conjunctivitis are coagulase-negative staphylococcus, Staphylococcus aureus, Pseudomonas aeruginosa in that order. Among 420 isolates, 405 bacteria and 15 fungi was isolated. In vitro examination for susceptibility and resistance of causative organisms to ciprofloxacin was done in 67 of 420 isolates. Of the 67 isolates, 57 were sensitive to ciprofloxacin and 10 were resistant to ciprofloxacin. All resistant cases to ciprofloxacin was 2 cases in 1994, 7 cases in 1998, and 1 case in 1999. CONCLUSIONS: The resistance to ciprofloxacin has a increasing tendency. Therefore, ciprofloxacin should be used carefully, when used for prevention of infection and primary treatment in mild ocular diseases.
Bacteria ; Ciprofloxacin* ; Conjunctiva ; Conjunctivitis ; Cornea ; Fungi ; Gram-Positive Bacteria ; Keratitis ; Pseudomonas aeruginosa ; Retrospective Studies ; Staphylococcus ; Staphylococcus aureus

The VATER syndrome is a group of congenital anomalies with a nonrandom tendency for concurrence. Defects include vertebral, anorectal malformation, tracheoesophageal fisutla with esophageal atresia, radial-limb, vascular, and renal abnormalities. The critical period of organogenesis is at or before the sixth or seventh week of gestation. We experienced one case of VATER syndrome in a 1 day old male neonate having vertebral anomalies, esophageal atresia with tracheoesophageal fistula to the distal esophageal segment, imperforated anus, left renal dysplasia with hydronephrosis of the right kidney and both hydroureter, patent ductus arteriosus. We report a case of VATER syndrome with brief review of related literature.
Anal Canal ; Critical Period (Psychology) ; Ductus Arteriosus, Patent ; Esophageal Atresia ; Humans ; Hydronephrosis ; Infant, Newborn ; Kidney ; Male ; Organogenesis ; Pregnancy ; Tracheoesophageal Fistula

The Dandy-Wlaker syndrome is a developmental disoeder characterized by cystic dilatation of the fourth ventricle and agenesis or hypoplasia of the cerebellar vermis and is usually associated with hydrocephalus. This syndrome is also associated with intracranial malformations such as agenesis of corpus callosum, and extracranial malformations such as facial anormalies (cleft palate, cleft lip, and ocular anomalies), polycystic kidney, and cardiac anormalies. Reported associated ophthalmic anomalies are microphthalmos, coloboma, and congenital cataract.We experienced a case of infantile esotropia in abnormal insertion and direction of lateral rectus muscle as a variant of the Dandy-Walker syndrome accompanied by cleft palate and cleft lip in a 19-month-old male infant. Subsequent treatment of the 30delta esodeviation and left inferior oblique muscle overaction, including resection of the lateral rectus muscle in both eyes and the myectomy of the inferior oblique muscle in the left eye, yielded satisfactory results, so we report this case, with a review of the pertinent literature, as the first case of Dandy-Walker syndrome associated with esotropia with abnormal course of lateral rectus muscle in Korea.
Agenesis of Corpus Callosum ; Cleft Lip ; Cleft Palate ; Coloboma ; Dandy-Walker Syndrome* ; Dilatation ; Esotropia* ; Fourth Ventricle ; Humans ; Hydrocephalus ; Infant ; Korea ; Lip ; Male ; Microphthalmos ; Polycystic Kidney Diseases

Diclofenac sodium is a widely used drug for reducing inflammation and pain after cataract, surgery or excirner laser photorefractive keratectomy. However,we could find epithelial defect while using this drug postoperatively. To investigate the toxic effects of diclofenac sodium, we cultured corneal epithelial cells and tissues, then exposed them to various concentratiotration of drugs and measured the cell number and expanding area from. the original corneal tissue. In cases of cell culture, the cell number was counted at 24, 48, and 72 hours` exposure to l2.5, 25, 50, and 100 ug/ml solution of diclofenac sodium and at. 5 days after two minute exposure to 0. I and 0.2% solution. The cell number was reduced significantly at 50ug/ml (72 hrs later) , 100ug/ml(48 or 72 hrs later) and 0.1, 0.2% of solution than that of the control group. In tissue culture, we exposed the epithelial tissue to the same condition of cell culture. In long duration exposure conditions, the size of the epithelium grown from the tissues was smaller than that in the control group, especially at the dosage of 50 and 100ug/ml. In short duratio(2 minutes) exposure conditions, no significant difference from the control group was found. In conclusion, diclofenac sodium has some suppressive effects on the growth and migration of the rabbit corneal epithelium and its postoperative high dose or frequent instillation might injure the corneal epithelial cells.
Cataract ; Cell Count ; Cell Culture Techniques ; Diclofenac* ; Epithelial Cells ; Epithelium ; Epithelium, Corneal* ; Inflammation ; Photorefractive Keratectomy