目的：本研究模拟了一款镍钛合金伞状脑保护装置在径向压握、自膨胀释放及血压作用下的情况，并对模型结构在各个接触载荷下的力学性能进行分析.方法：建立了伞状脑保护装置、压握工具以及目标血管的有限元模型.对圆柱状压握工具施加向内的径向位移沿R轴正方向施加大小为2.0mm的位移载荷，压握伞状脑保护装置至外径为2.0mm；将压握工具恢复到原始尺寸，建立血管/远端保护器接触关系；对伞状脑保护装置两端截面在轴向和
Screening and analysis of circulating tumor cells(CTCs)can potentially provide crucial information for clinical prevention,diagnosisand treatment of cancer metastasis.Herein we designed variousfunctio
Single Photon Emission Computed Tomography(SPECT)suffers limited detection efficiency and spatial resolution due to the need for collimators and un-direct conversion of scintillation detectors.Various
The 2D janus hybrid(gold NPs/graphene)superstructures were built via arapid,solventless sputtering method in 10 seconds.The size and morphology of gold NPs can be fine controlled by adjusting the sput
Auricular-prosthesis-based techniques have been developed for years to repair ears with defects.In order to obtain good aesthetics and functional effects of the auricular prosthesis,the following two
Intraoperative monitoring of cerebral blood flow(CBF)is of interest to neuroscience researchers,which offers the assessment of hemodynamic responses throughout the process of neurosurgery and provides
Laser speckle contrast imaging(LSCI)has shown it ssuccessfulness in full-field imaging of blood vessel and blood,with many advantages over the conventional laser Doppler flowmetry.Intraoperative monit
相变微滴被用于高强度聚焦超声(HIFU)热物理治疗可以大大缩短治疗时间,它的作用原理是相变微滴在HIFU焦点区域气化成为微泡,增加治疗区局部的热量。然而,关于这种新型的治疗方式的研究目前仅有少量实验方面的报道,为了得到参数全面的定量结果,挖掘其中的作用机理,本文建立了数值计算模型。模型中考虑了组织中存在相变微滴时,HIFU焦点处形成微泡后对声场的影响,将组织吸收超声能量转化的热能和微泡在超声作用下
生物医学研究中对血管和血流的监测是非常重要的。激光散斑衬比成像技术是一种简单但是非常有效的全场血液流速成像方法。但是，一些实际的因素会影响散斑衬比值，这些因素使得利用激光散斑衬比成像技术难以定量地获取绝对流速或者流速分布。到目前为止，利用激光散斑衬比成像技术的研究只能定量地在一个较短的时间窗和稳定的光照以及环境条件下测量相对血液流速的变化，这限制了激光散斑衬比成像技术的应用范围。在这篇文章中，我们
This paper presents the design and control strategy of a novel assistive system,FEXO Knee,which combines functional electrical stimulation(FES)with a compliant exoskeleton for better physical rehabili