目的:探讨高场术中核磁共振(M RI )联合神经导航在胶质瘤显微手术中的临床应用价值。方法回顾性分析2011年8月~2015年3月延安大学附属医院收治的胶质瘤患者80例,按照手术方式分为观察组与对照组。观察组42例患者在高场术中M RI联...目的:探讨高场术中核磁共振(M RI )联合神经导航在胶质瘤显微手术中的临床应用价值。方法回顾性分析2011年8月~2015年3月延安大学附属医院收治的胶质瘤患者80例,按照手术方式分为观察组与对照组。观察组42例患者在高场术中M RI联合神经导航下进行胶质瘤显微切除术,对照组38例患者行传统胶质瘤切除术。对两组患者围术期情况、治疗效果、术后并发症及生活质量评分进行比较。结果观察组患者的手术时间、下床活动时间、住院时间、术中出血量及术后引流量均少于对照组,差异有统计学意义(P <0.05)。治疗后两组生活质量恢复情况的差异无统计学意义(P>0.05)。观察组患者术后并发症发生率为16.67%,低于对照组的44.74%,差异有统计学意义( P <0.05)。结论高场术中M RI联合神经导航下进行显微切除术治疗胶质瘤定位及切除准确,疗效好,安全性高,值得临床推广应用。展开更多
Cracks easily generate in concrete at early age owing to the shrinkage deformation.CaO-based expansion agent(CEA)and superabsorbent polymers(SAP)have been extensively used for the mitigation of concrete shrinkage.The ...Cracks easily generate in concrete at early age owing to the shrinkage deformation.CaO-based expansion agent(CEA)and superabsorbent polymers(SAP)have been extensively used for the mitigation of concrete shrinkage.The macroscopic properties of concrete are highly determined by the microstructure.In this study,the influence of CEA and SAP addition on the pore structure evolution of cement paste under different curing temperatures was evaluated via low-field nuclear magnetic resonance spectroscopy.Test results indicated that,in cement paste,a higher CEA content led to a higher porosity and a larger most probable pore diameter(MPPD).Meanwhile,SAP addition increased the porosity and MPPD of CEA cement paste at early age but decreased them after 7 d,and a higher SAP content always brought a higher porosity and MPPD.Furthermore,the addition of SAP led to a lower porosity and MPPD of CEA cement paste than that of plain cement paste after 14 d.Moreover,the porosity and MPPD of CEA cement paste decreased first and subsequently increased as the curing temperature raised.展开更多
文摘目的:探讨高场术中核磁共振(M RI )联合神经导航在胶质瘤显微手术中的临床应用价值。方法回顾性分析2011年8月~2015年3月延安大学附属医院收治的胶质瘤患者80例,按照手术方式分为观察组与对照组。观察组42例患者在高场术中M RI联合神经导航下进行胶质瘤显微切除术,对照组38例患者行传统胶质瘤切除术。对两组患者围术期情况、治疗效果、术后并发症及生活质量评分进行比较。结果观察组患者的手术时间、下床活动时间、住院时间、术中出血量及术后引流量均少于对照组,差异有统计学意义(P <0.05)。治疗后两组生活质量恢复情况的差异无统计学意义(P>0.05)。观察组患者术后并发症发生率为16.67%,低于对照组的44.74%,差异有统计学意义( P <0.05)。结论高场术中M RI联合神经导航下进行显微切除术治疗胶质瘤定位及切除准确,疗效好,安全性高,值得临床推广应用。
基金Projects(51878245,U1965105)supported by the National Natural Science Foundation of ChinaProject(2019GSF110006)supported by the Key Research and Development Program of Shandong Province,China+2 种基金Project(2020Z035)supported by the Ningbo 2025 Science and Technology Major Project,ChinaProject(KJ2017B01)supported by the Scientific Research Project of Department of Education of Anhui Province,ChinaProject(2019CEM001)supported by the State Key Laboratory of High Performance Civil Engineering Materials,China。
文摘Cracks easily generate in concrete at early age owing to the shrinkage deformation.CaO-based expansion agent(CEA)and superabsorbent polymers(SAP)have been extensively used for the mitigation of concrete shrinkage.The macroscopic properties of concrete are highly determined by the microstructure.In this study,the influence of CEA and SAP addition on the pore structure evolution of cement paste under different curing temperatures was evaluated via low-field nuclear magnetic resonance spectroscopy.Test results indicated that,in cement paste,a higher CEA content led to a higher porosity and a larger most probable pore diameter(MPPD).Meanwhile,SAP addition increased the porosity and MPPD of CEA cement paste at early age but decreased them after 7 d,and a higher SAP content always brought a higher porosity and MPPD.Furthermore,the addition of SAP led to a lower porosity and MPPD of CEA cement paste than that of plain cement paste after 14 d.Moreover,the porosity and MPPD of CEA cement paste decreased first and subsequently increased as the curing temperature raised.