Cerebral fluid (CSF) in the cranial cavity flows toward the spinal CSF space in a to and fro manner, responding to the pulsations of the brain. Therefore, the signal intensity of the CSF on magnetic resonance imaging (MRI) is affected and changed by the velocity of CSF flow (Bradley et ...
当前的颅内压(ICP)测定技术属有创性的,均需手术将压力探头置入中枢神经系统,有一定的危险性和致残性.上述原因促使研究人员开发无创性压力评估技术.一种新近开发的基于MRI测定颅内顺应性和压力的方法已见诸报道.这一方法考虑到了随着每一个心动周期自然发生的颅内容积和ICP的细微改变.根据脑脊液流速...
In an experiment, to-and-fro flow and bulk flow were simultaneously generated as CSF flow movement in an aqueduct. Under these conditions, the flow velocities and patterns were quantitatively measured with both phase-contrast cine MR imaging and an electromagnetic flow meter. The measured values ...
正常成人中脑导水管层面脑脊液流动MRI测量：与年龄和性别相关分析 ·25CHINESE JOURNAL OF CT AND MRI, DEC. 2023, Vol.21, No.12 Total No.170【通讯作者】高振华，男，副主任医师，主要研究方向：医学影像诊断。E-mail：***MRI Measurement of Midbrain Aqueductal ...
The CSF flow spectra in the aqueduct were determined in patients (n=51) with NPH, brain atrophy or asymptomatic ventricular dilation (VD), and in healthy volunteers (control group; n=25). The changes in CSF flow spectra were also analyzed after intravenous injection of acetazolamide. Moreover...
395GreitzD.WirestamR.FranckAeta/.Pulsatilebrainmove— n枷t andassociatedhydrodynamicsstudiedbymagneticl'eflo—n/l/Icephaseimaging.Neuromdiology.1992,34:370MascalchM,AmetoliG,InztiarDeta/.Cine—Nil i删蟛ngofaqueduetalcsfflowinnomlalpressurehydrocephalussyn・ dromebeforeandaftercsfshunt.ActaRadiologica,...
cSVD:脑小血管疾病;MRI:磁共振成像;DTI:扩散张量成像;DCE-MRI:动态对比增强MRI;CVR-MRI:脑血管反应性MRI;CSF:脑脊液;PSMD:骨架化平均扩散率的峰宽。 搜索策略和选择标准 为了专注于最近的进展,我们在PubMed上搜索了2018年1月1日至2021年11月1日期间的文章。通过筛选标题和摘要来确定相关性,并审查了相关文章的...
2. Is the noninvasive MRI analysis of aqueductal CSF flow a reliable indicator for shunting?doi:10.1007/978-3-642-77789-9_174J. MeixensbergerE. HofmannA. BrawanskiM. HolzschunW. UllrichSpringer Berlin Heidelberg
1、CT AND MRI IMAGING OF NORMAL BRAINNORMAL ANATOMY OF BRAINBrain is separated from calvarium by three meninges-dura mater,arachnoid membrane and pia mater. Divided into supra tentorial and infra tentorial compartments containing:- Supratentorium: Cerebral hemispheres diencephalonInfratentorium: Brain...
The flow rate of CSF was calculated based on the flow distance of CSF in the connective structures between brain ventricles during different TI time. The mean value of each indicator was acquired. Results Two-way flow state of CSF was observed in all connective structures, including bilateral ...