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Objective To understand the occurrence status of poor eyesight,dry eye in primary and middle school students and its correlation.Methods School was used as sampling unit,and 300 cases of primary and middle school students were selected by stratified cluster random sampling.Results The poor vision prevalence rate was 48.0%,the prevalence rate of dry eye was 6.7%,the rate of poor eyesight with the grade increasing trend was gradu-ally increased,and the incidence of women was higher than men.The indicators of the observation group[BUT(tear) (6.4 ±2.4)s,SIt(Schirmer test)(10.4 ±4.9)mm,FL(corneal fluorescein staining)(3.1 +0.9)]were significantly better than the control group[BUT(13.7 ±3.3)s,SIt(15.3 ±5.4)mm,FL(1.8 ±1.0)],there were statistically significant differences between the two groups(t =12.6,4.7,-6.8,all P <0.05).Conclusion Students of poor eyesight and dry eye is high prevalence,and the poor eyesight is a dry eye prone group,right eye should be a reasona-ble way of life to students.
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Objective To study the value of 18F-fluoro-deoxy-D-glucose positron emission tomography-computed tomography (18F-FDG PET/CT) in diagnosis of patients suspected with gastric malignant tumors. Methods Ten women and fourteen men, with a mean age of (56±15) years (ranged from 28 to 83 years) suspected of gastric malignant tumors were enrolled from May 2007 to July 2007. According to the results of the first time endoscopy and biopsy, patients were divided into gastric cancer group (n=9) and suspected group(n= 15). 18F-FDG PET/CT whole body scan was performed in gastric cancer group for assistant operation and suspected group for further diagnosis. The results of PET/CT for suspected group were all confirmed by the endoscopy later. The final diagnosis was based on pathology and follow-up. The sensitivity, specificity, positive predictive value and negative predictive value of 18F-FDG PET/CT in diagnosis of gastric malignant tumors were analyzed, as well as the tumor staging before operation. Results The malignant tumor was found in 16 out of 24 patients who received 18F-FDG PET/CT scan, including 9 in gastric cancer group and 7 in suspected group. Sixteen tumors originated from stomach,and 1 infiltrated the liver, pancreas and omentum. Liver (1 case) and lung (1 case) metastases were found. Three lesions limited in intestine and 13 had positive lymph nodes. Two patiens in suspected group were not diagnosed by PET/CT, one was negative and the other, who suspected as gastric cancer by PET/CT, was pathologicaly confirmed as benign gastrointestinal stromal tumor. The sensitivity, specificity, positive predictive value and negative predictive value of 18F-FDG PET/CT in diagnosis of gastric malignant tumors were 16/17, 6/7, 16/17 and 6/7, respectively. Six patients of stage Ⅲ and Ⅳ were all detected. Conclusions 18F-FDG PET/CT whole body scan is not only a feasible, safe, noninvasive and promising diagnostic tool in detecting and differentiating gastric cancer from benign tumor, but also can assist the management of disease.
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BACKGROUND: Decrease of regional cerebral blood flow (rCBF) perfusion of different degree exists in depressive patients, but the decreased ranges were different, different cerebral cortical and subcortical regions are involved.OBJECTIVE: To observe the types of abnormal rCBF perfusion in patients with depressive disorder.DESIGN: A diagnosis-based case-control analysis.SETTINGS: Department of Nuclear Medicine, Ruijin Hospital Affiliated to the Medical College of Shanghai Jiaotong University; Staff Room of Biomedical Engineering, Medical College of Shanghai Jiaotong University;Putuo District Mental Health of Shanghai City.PARTICIPANTS: The patients with depressive disorder were selected from the Putuo District Mental Health Center from January 1999 to December 2000, and 19 normal subjects matched by age were selected from the medical staff of the hospital as normal controls.METHODS: The patients with depressive disorder and healthy subjects were examined by single photon emission computerized tomography (SPECT), ethyl cysteinate dimmer (99Tcm-ECD) was performed, and the images were analyzed with the statistical parametric mapping (SPM). All the SPECT images were converted into DICOM format or ANALYZE-7 format at first, and then the images were standardized by taking MRI template as the template and smoothed, and the significantly different regions were evaluated by the statistical analysis and inferences with the Gaussian random theory.MAIN OUTCOME MEASURES: The differences of the cerebral blood flow perfusion in specific region and the changes of average rCBF images were mainly observed in the depressive disorder group and normal control group.RESULTS: All the 12 patients with depressive disorder and 19 normal healthy subjects entered the analysis of results. The SPM showed that the blood flow perfusion was decreased in bilateral frontal lobes, left superior temporal gyrus, left Brodmann area 20, left mamillary body of thalamus,right cingulated gyrus and right putamen in the patients with depressive disorder. The blood flow perfusion was increased in the right central frontal gyrus, right superior temporal gyrus, right occipital lobe and left central frontal gyrus.CONCLUSION: The rCBF is obviously changed in the frontal lobe, temporal lobe and limbic system of patients with depressive disorder.
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<p><b>OBJECTIVE</b>To study the effectiveness of radiation synovectomy with (188)Re-sulfide.</p><p><b>METHODS</b>Twenty rabbit models of joint synovitis were injected intra-articularly with different doses of (188)Re-sulfide from 7.4 to 37.0 MBq. By pathological examination, the effects of (188)Re-sulfide on synovium and cartilage were evaluated. Clinically, 10 joints of 7 cases of hemophilic arthritis with (188)Re-sulfide radiation synovectomy were performed. MRI was taken before and after the synovectomy to evaluate the treatment effects.</p><p><b>RESULTS</b>In rabbit models, when (188)Re-sulfide dose larger than 14.8 MBq, the radiation effect on synovitis was remarkable, including thinning the thickened synovium and reducing the inflammatory cells. When radio-activity dose increased to 37.0 MBq, pathological damage was noted in cartilage. Clinical trial demonstrated that radiation synovectomy by (188)Re-sulfide could reduce the frequencies of intra-articular hemorrhage. MRI showed that edema and villi reduced.</p><p><b>CONCLUSIONS</b>Radiation synovectomy using (188)Re-sulfide is effective on synovitis in hemophilic arthritis.</p>