PURPOSE: To evaluate MR characteristics of periosteal reactions and subperiosteal abscesses in osteomyelitis as compared with radiographs. MATERIALS AND METHODS: We retrospectively reviewed 28 patients(18 males, 10 females) with osteomyelitis. Nineteen patients underwent MR imaging with 0.5 T. We analyzed for morphologic patterns, intervals of appearance and disappearance of periosteal reactions after symptom onset. Twenty-three patients were confirmed by surgery and 5 patients by the radiologic findings, clinical and laboratory data. RESULTS: Periosteal reaction appeared as low signal intensity arc on the T1- and T2-weighted axial images. In 3-7 days after symptom onset, periosteal reactions and subperiosteal abscesses were noted on MR imaging, and only two of eleven patients were noted in radiographs. Periosteal reactions of 8-14 days after symptom onset were demonstrated in all of 13 patient on MR, and 9 on plain radiographs. All patients with 2 weeks after symptom onset showed perioste.al reaction in plain film and MR. The periosteal reactions persisted until approximately 2 to 3 months after treatment on follow up radiographs. CONCLUSION: Periosteal reactions in osteomyelitis are detected on the MR imaging earlier than plain film. MR is valuable in detecting subperiosteal abscess which is not appecent in simple radiographs. Periosteal reactions can be seen on MR in 3 days after symptom onset and persist for 2-3 months after treatment.
Abscess ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging* ; Male ; Osteomyelitis* ; Retrospective Studies

The lesions on computerized tomography (CT) scan were evaluated in 7 cases of conduction aphasia. On Modified Westem Aphasia Battery (MWAB), all the patients showed fluent aphasia with some paraphasic errors, good comprehension, marked repetition dificit and variable degree of impairment in naming. The three most common lesions on CT scan were supramarginal gyrus and it's white matter, primary auditory cortex, and insular region, which were involved in 6,5,4 cases out of 7 respectively. Of the three lesions, one or variable combinations of them may be the critical structures for repetition difict in these patients, as has been reported in previous studies. In 5 cases Wermicke area was relatively intact and prominent involvement was seen in only 2 cases, which is thought to be associated with relative preseration foaural comprehension in conduction aphasia.
Aphasia ; Aphasia, Conduction* ; Aphasia, Wernicke ; Auditory Cortex ; Comprehension ; Humans ; Tomography, X-Ray Computed

BACKGROUND AND OBJECTIVES: The acute effect of alcohol is well known. However, although many authors have studied the effect of alcohol on equilibrium and found a deteriorated balancing capacity, objective studies of deteriorated balancing capacity have rarely been reported. The object of this study is to assess the effect of alcohol on vestibular function impairment by dynamic posturography. MAERIALS AND METHODS: Twelve healthy male volunteers aged 23-27 years (mean 25years) were assessed by dynamic posturography 30 min, 60 min and 90 min before and after the ingestion of alcohol. Alcohol levels were measured by blood samples 30, 60 and 90 min before, at and after ingestion. The samples were analyzed for alcohol by chromatography (SIGMA diagnostics). Each condition in SOT and latencies in MCT were used to estimate the effect of alcohol. RESULTS: The obtained results were as follows: 1) The time when serum alcohol concentration reach the maximum was 60 minute (50%). 2) Conditions 4, 5, 6 and composite scores showed statistically significant lower equilibrium scores (p<0.05). 3) Fourty-one percent showed normal SOT pattern, 33.3% showed generalized lower scores for all the conditions, 16.7% showed lower scores for the conditions 4, 5, and 6, and 8.3% showed lower scores for the conditions 5 and 6. 4) No significant effects were found for the latencies of MCT (p>0.05). CONCLUSION: Acute alcohol ingestion influences impairment of vestibular and visual input on equilibrium.
Chromatography ; Eating ; Humans ; Male ; Volunteers

BACKGROUND: This study investigated the relationship between job type and the risk for spontaneous abortion to assess the reproductive toxicity of female workers in the semiconductor industry. METHODS: A questionnaire survey was administered to current female workers of two semiconductor manufacturing plants in Korea. We included female workers who became pregnant at least 6 months after the start of their employment with the company. The pregnancy outcomes of 2,242 female workers who experienced 4,037 pregnancies were investigated. Personnel records were used to assign the subjects to one of three groups: fabrication process workers, packaging process workers, and clerical workers. To adjust for within-person correlations between pregnancies, a generalized estimating equation was used. The logistic regression analysis was limited to the first pregnancy after joining the company to satisfy the assumption of independence among pregnancies. Moreover, we stratified the analysis by time period (pregnancy in the years prior to 2008 vs. after 2009) to reflect differences in occupational exposure based on semiconductor production periods. RESULTS: The risk for spontaneous abortion in female semiconductor workers was not significantly higher for fabrication and packaging process workers than for clerical workers. However, when we stratified by time period, the odds ratio for spontaneous abortion was significantly higher for packaging process workers who became pregnant prior to 2008 when compared with clerical workers (odds ratio: 2.21; 95% confidence interval: 1.01–4.81). CONCLUSIONS: When examining the pregnancies of female semiconductor workers that occurred prior to 2008, packaging process workers showed a significantly higher risk for spontaneous abortions than did clerical workers. The two semiconductor production periods in our study (prior to 2008 vs. after 2009) had different automated processes, chemical exposure levels, and working environments. Thus, the conditions prior to 2008 may have increased the risk for spontaneous abortions in packaging process workers in the semiconductor industry. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s40557-017-0204-x) contains supplementary material, which is available to authorized users.
Abortion, Spontaneous* ; Chemical Processes ; Clergy ; Employment ; Female ; Female* ; Humans ; Korea ; Logistic Models ; Occupational Exposure ; Odds Ratio ; Pregnancy ; Pregnancy Outcome ; Product Packaging ; Semiconductors*