Systemic lupus erythematosus(SLE) is an autoimmune disease characterized by multisystem involvement including central nervous system and various neurologic symptoms. The authors experienced a case of brain SLE and report MRI and other neuroimaging findings.
Autoimmune Diseases ; Brain* ; Central Nervous System ; Magnetic Resonance Imaging* ; Neuroimaging ; Neurologic Manifestations

No abstract available.
Melanoma ; Nevus

No abstract available.
Acetazolamide* ; Aneurysm* ; Brain* ; Humans ; Perfusion* ; Subarachnoid Hemorrhage* ; Tomography, Emission-Computed, Single-Photon*

Pelvic fistulas may result from obstetric complications, inflammatory bowel disease, pelvic malignancy, pelvic radiation therapy, pelvic surgery, or other traumatic causes, and their symptoms may be distressing. In our experience, various types of pelvic fistulas are identified after pelvic disease or pelvic surgery. Because of its close proximity, the majority of such fistulas occur in the pelvic cavity and include the vesicovaginal, vesicouterine, vesicoenteric, ureterovaginal, ureteroenteric and enterovaginal type. The purpose of this article is to illustrate the spectrum of imaging features of pelvic fistulas.
Bladder Fistula/diagnosis/etiology ; Female ; Fistula/*diagnosis/*etiology ; Human ; Intestinal Fistula/diagnosis/etiology ; *Pelvis ; Ureteral Diseases/diagnosis/etiology ; Urinary Fistula/diagnosis/etiology ; Uterine Diseases/diagnosis/etiology ; Vaginal Fistula/diagnosis/etiology

No abstract available.
Anoxia* ; Blood Gas Analysis* ; Humans ; Incidence*

Avascular necrosis of the femoral head is the most common disease for which total hip arthroplasty is being performed in Korea. In order to develop a femoral stem having a proper fit to Korean femur, it is essential to study the change in the shape of the proximal endosteal canal of the femur resulting from disuse caused by pain avascular necrosis of the femoral head. The size and shape of the proximal femur were measured with 3-dimensional images reconstructed from the CT data of 116 femurs in 58 patients who had suffered from avascular necrosis of the femoral head. Among them, there were 30 patients who had suffered from unilateral involvement of avascular necrosis of the femoral head. The comparative study was made on the shape of the proximal endosteal canal of the femur between the normal and the diseased femurs. The shape of proximal endosteal canal of femur in avascular necrosis didn't show statistically significant difference from that of the normal femur. Therefore, the femoral stem designed from the data of normal femurs can be usually applied to the avascular necrosis without problem in obtaining the maximal fit between the stem and the endosteal canal. The canal flare index was greater and the proportion of champagne-flute type was higher in Korean than in Westerner. The shape of the endosteal canal of isthmus was nearly circular in Korean in contrast to anteroposteriorly ovoid in Westerner. The distribution of sagittal canal flare index which was newly defined in this study was entirely different from that of preexisting canal flare index in coronal plane. It will be necessary to study further in the future.
Arthroplasty, Replacement, Hip ; Femur ; Head ; Humans ; Korea ; Necrosis

Malnutrition and weight loss after total gastrectomy is one of the major concerns of surgeons. In order to improve the nutritional status in these patients, many surgeons have tried to restore the duodenal passage as reconstructive procedure but debates have been continued. So we investigated weight change, postprandial serum secretin response and fecal fat amount to evaluate the esophagojejunoduodenostomy after which the duodenal passage was restored. Total gastrectomized dogs showed significant weight loss and all experimental animals except sham operation died between five and eight weeks after the operation. Serum secretin concentration after esophagojejunoduodenostomy increased significantly from a mean fasting value of 100 +/- 12.5 pg/mL to a mean peak of 142 +/- 22.5 pg/mL at 40 minutes and returned to the fasting level at 120 minutes postprandially. But fasting and postprandial serum secretin concentration in patients following Roux-en Y esophagojejunostomy were fluctuated irregularly. The amount of fecal fat in esophagojejunoduodenostomy was 5.3 +/- 1.2 gm/100 gm stool, which was not different from that of the control group but in Roux-en Y esophagojejunostomy it was 28.1 +/- 4.1 gm/100 gm stool which was much higher than that observed in esophagojejunoduodenostomy and in control group. These results suggest that esophagojejunoduodenostomy is superior to Roux-en Y esophagojejunostomy in respect to pancreatic secretory function and fat absorption.
Anastomosis, Roux-en-Y ; Animal ; *Animal Nutrition ; Dogs ; Duodenostomy ; Esophagostomy ; *Gastrectomy ; Jejunostomy ; Support, Non-U.S. Gov't

PURPOSE: Liquid beta emitter filled in angioplasty balloon could be used to perform endovascular balloon brachytherapy to prevent coronary artery restenosis. We investigated the dosimetry for Re-188-DTPA liquid-filled balloon and medical internal radiation dosimetry in case of balloon leakage. MATERIALS AND METHODS: We estimated radiation dose from an angioplasty balloon (20 mm lengfh, 3 mm diameter cylinder) to the adjacent vessel wall using Monte Carlo EGS4 code. We obtained time-activity curves of kidneys in normal dog and calculated Tmax, T1/2. Using MIRDOSE3 program, we estimated absorbed doses to the major organs (kidneys, bladder) and the whole body when we assumed that balloon leaked all the isotope contained. RESULTS: The radiation dose was 17.5 Gy at the balloon surface when we applied 3,700 MBq/ml of Re-188 for 100 seconds. Fifty percent of the energy deposited within 1 mm from the balloon surface. The estimated internal dose to the whole body was 0.005 mGy/MBq and 18.5 mGy for the spillage of 3,700 MBq of Re-188. CONCLUSION: We suggest that Re-188-DTPA can be used for endovascular balloon brachytherapy to inhibit coronary artery restenosis after angioplasty with tolerable whole body radiation dose in case of balloon rupture.
Angioplasty* ; Animals ; Brachytherapy* ; Coronary Vessels ; Dogs ; Kidney ; Radiometry ; Rupture ; Whole-Body Irradiation

In excimer laser ablation, the methods of epithelial removal include mechanical, chemical(alcohol), and laser ablation. To investigate the effects of the de-epithelialization methods, we removed corneal epithelia of 60 rabbits with above three methods and examined corneal epithelial healing time, stromal PMN cells, and immunohistochemical expression of c-fos with time interval. Corneal epithelia healed in 48 hours in the alcohol and laser ablation groups, but in 72 hours in the mechanical ablation group. The count of the stromal PMN cells was maximal in 12 hours in all three groups, and the inflammaion was prolonged in the alcohol ablation group(p<0.05). The c-fos was expressed after 6 hours, 12 hours and 24 hours in all 3 groups and after 48 hours only in the mechanical ablation group. This study suggests that mechanical ablation may produce a larger damage to cornea than laser and chemical ablations and the expression of c-fos in corneal epithelium may be significant findings related to epithelial wound healing.
Cornea ; Epithelium, Corneal ; Inflammation* ; Laser Therapy ; Lasers, Excimer ; Rabbits* ; Wound Healing* ; Wounds and Injuries*

OBJECTIVES: To evaluate MRI findings of non-recurrent hepatocellular carcinomas with lipiodol uptake (LHCCs) treated with transarterial chemoembolization. METHODS: 28 LHCCs were divided into two groups according to amount of lipiodol uptake and tumor size, retrospectively. According to amount of lipiodol uptake, HCCs were classified into group A with dense lipiodol uptake (more than 90%) and group B with partial lipiodol uptake (between 50% and 90%). For HCC size analysis, group I was defined by a longest diameter of less than 2 cm, and group II was defined by a longest diameter of greater than or equal to 2 cm. RESULTS: In group A (n=16), eight LHCCs showed high signal intensity (SI) on T2-weighted images (T2WI), ten LHCCs showed low SI on T1-weighted imaged (T1WI), six LHCCs showed decreased SI at higher b value of diffusion-weighted images (DWI). In group B (n=12), six LHCCs revealed high SI on T2WI, six LHCCs revealed low SI on T1WI, ten LHCCs decreased SI at higher b value of DWI. As compared with tumor size and SI, six of 12 LHCCs in group I and eight of 16 LHCCs in group II showed high SI on T2WI. Six LHCCs in group I and ten LHCCs in group II showed low SI on T1WI. All LHCCs were not enhanced. CONCLUSION: Signal intensities of LHCCs were variable, but more than half of LHCCs showed high SI on T2WI, low SI on T1WI, decreased SI at higher b value of DWI, regardless of lipiodol uptake or tumor size.
Carcinoma, Hepatocellular* ; Ethiodized Oil* ; Magnetic Resonance Imaging* ; Retrospective Studies