三种金属修复体磁共振成像伪影范围的研究

目的：研究3种合金单颌固定义齿磁共振成像伪影大小。方法：制取志愿者上颌牙列模型,在模型上分别用钴铬、镍铬、钛合金制作做3套大小形状相同的铸造7—7联冠。将3套联冠按材料不同分成3组。将志愿者不戴义齿在phi1ips1．5T下进行磁共振头颈部扫描作为对照纽,志愿者分别戴3种义齿重复上述检查作为实验组,将实验组与对照组进行对比,观察伪影大小及影响范围,测量伪影影响的宽度、高度,进行单因素方差分析。结果：3种义齿均形成了与义齿形状相近的伪影,并对邻近组织观察产生了一定的影响,但影响范围局限,均未影响到脑部及颈椎的影像。结论：钛合金伪影最小,3种金属义齿均不影响脑部等重要部位的观察。     

Effects of Music on Immunity and Physiological Responses in Healthcare Workers: A Randomized Controlled Trial

Research‐based evidence supports the effectiveness of soothing music in improving stress‐related psycho‐physiological indices in a clinical setting. However, there is currently insufficient scientific knowledge of the effects of music on immune markers of stress in humans. Therefore, the aims of the study were to compare the effects of music and quiet rest on the levels of interleukin‐6 (IL‐6), tumour necrosis factor‐α (TNF‐α), interleukin‐10 (IL‐10), heart rate and mean arterial pressure among healthcare workers. By using a randomized controlled trial design, 60 nurses were randomly assigned to the stimulating or sedating music or rest groups for 30 min. Participants' psychoneuroimmunological parameters were measured using enzyme‐linked immunosorbent assays. General estimating equation was used to analyse data. Results revealed that IL‐6, TNF‐α and IL‐10 were not detectable in this population. No significance differences in heart rate were found among the three groups. However, the stimulating music group had significantly higher mean arterial pressure levels than the sedating music group but no differences between the quiet rest group and the sedating music group. Music with different tempi had little effect on mean arterial pressure. Any effect of music on immune markers of stress requires further research. Copyright © 2012 John Wiley & Sons, Ltd.     

Gender difference in antidepressant-related sexual dysfunction in Taiwan

Objective

Sexual dysfunction accompanied by depression may be altered by antidepressants. The effects of antidepressants on sexual dysfunction among males and females remain to be investigated.

Methods

Three groups of subjects, drug-free patients with depression (N= 125), medicated patients with depression (N= 145) and healthy volunteers (N= 255), were recruited. A Chinese version of the Changes in Sexual Functioning Questionnaire was employed to assess sexual function as the primary outcome.

Results

Drug-free depressed females and medicated depressed males had more sexual dysfunction than healthy controls. The desire for sexual behaviors among healthy females and medicated depressed females was higher than that of drug-free depressed females.

Conclusion

Depression and antidepressants may have different impacts on the sexual function of males and females.     

颅内电极置入与脑功能区定位技术在功能区难治性癫疒间手术的应用

目的探讨颅内电极埋藏与脑功能区定位技术在功能区起始的难治性癫疒间手术的评估价值。方法回顾性分析7例难治性癫疒间的临床资料,头皮视频脑电图长程监测均考虑致疒间灶可能累及功能区,故行颅内电极置入术,再行皮质电极视频脑电图长程监测,记录发作间期和发作期脑电图,以判断致疒间皮质,并采用皮质电刺激行脑功能区定位,在指导术中尽可能切除致疒间皮质的同时,最大限度保护脑功能。结果癫疒间发作起始区切除2例,癫疒间起始区部分切除加周围皮质热灼5例。随访6个月~1年,术后运动及语言功能均保护良好6例,对侧肢体出现短暂运动障碍后恢复1例。结论颅内电极埋藏与脑功能区定位技术是功能区难治性癫疒间手术必要评估手段,有助于术前明确脑功能区和皮质放电区域,以及两者之间的关系,指导设计手术方式,最大限度提高病人术后生活质量。     

A ZnO@ABS/TPU/CaSiO3 3D skeleton and its adsorption/photocatalysis properties for dye contaminant removal

Both adsorption and photocatalysis are considered to be effective methods for removing organic contaminants from dye wastewater. In this study, the construction of 3D skeletons based on the nanoparticles ZnO and ABS/TPU/calcium silicate (CaSiO₃) (shortened as ATC) were fabricated via fused deposition molding (FDM) technology. Characterization by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) depicted that ZnO nanospheres had been successfully grown on the 3D skeleton surface with an enlarged specific surface area. As the results of the RhB adsorption and photocatalytic degradation experiments showed, the removal ratio of RhB onto the ZnO-ATC skeleton was as high as 97.94% and the synergistic effect of adsorption and photocatalysis greatly shortened the RhB degradation time under ultraviolet light irradiation. The nanocomposites synthesized in this study showed a significant removal ability for organic pollutants, and could effectively overcome the limitation of the secondary removal of photocatalysts.

Enhanced synergistic effect of photocatalytic and adsorption was realized through the system constructed of ZnO nanoparticle loaded 3D skeleton.     

Effects of Health Qigong Exercise on Depression and Anxiety in Patients with Parkinson’s Disease

Objective: This study explored the effects of Health Qigong exercise on depression and anxiety in patients with Parkinson’s disease (PD). Methods: A total of 42 volunteers who met the inclusion criteria were recruited and randomly allocated into the experimental group and the control group. The experimental group carried out 60-minute sessions of Health Qigong exercise five times a week for 12 weeks while the control group did not perform any regular physical exercise. Data on cognitive impairment, psychomotor retardation, somatic anxiety, weight loss and sleep disorders, the sum score of the 17-item Hamilton Depression Rating Scale (HDRS-17), state anxiety, trait anxiety as well as the sum score of the State-Trait Anxiety Inventory (STAI) were collected for three repeated measurements (baseline, 6, and 12 weeks). Results: Significant differences were observed in depression, state anxiety, trait anxiety, cognitive impairment and psychomotor retardation in the experimental group but no difference in somatic anxiety, weight loss and sleep disorders. Conclusion: Health Qigong exercise can pose positive psychological effects and alleviate the depression and anxiety in patients with Parkinson’s disease. It can be applied as an accessible supplement to the existent drug treatment for PD.     

颅内畸胎瘤破裂的MRI表现(附5例报告)

目的　总结分析颅内畸胎瘤破裂的MRI表现。方法　共 5例 ,均经手术病理证实。均行MRI及CT检查 ,其中 2例做了MRI增强扫描。结果　MRI显示颅内微小脂肪滴及脂肪 脑脊液平面优于CT ,CT显示畸胎瘤的钙化优于MRI。结论　颅内畸胎瘤破裂具有典型的MRI表现 ,MRI检查中改变病人体位的方法和脂肪抑制技术对该病的定性诊断有很大帮助。