A Cine phase-contrast MRI technique was used to image the pulsatile blood flow to the brain, the venous outflow through the internal jugular, epidural, and vertebral veins, and the bi-directional CSF flow between the cranium and the spinal canal. Previously published analyses were applied to ...
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...
We established changes of brain and spinal fluid dynamics over an age range from 5–40 years. The application of RT-PC MRI in clinical care may improve our understanding of CSF flow pathology in individual patients. 展开 关键词: BLOOD flow VENA cava inferior MAGNETIC resonance imaging ADULTS ...
Since the introduction of cardiac gated gradient echo sequences in MRI, the noninvasive study of intracranial cerebrospinal fluid (CSF) pulsations became possible [2, 5]. Especially in hydrocephalic patients disturbances of CSF flow in the mesencephalic aqueduct may be of clinical importance in ...
Frequency analyses of CSF flow measured with phase-contrast cine MRI were performed. 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...
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...
Flow velocities as a function of time in descending aorta of a volunteer using cardiac gated phase-contrast MR.Sagittal phase-contast cine CSF flow study. Note normal reversal of flow around the brainstem and upper cord during the cardiac cycle. Axial PC study through the brain stem showing pu...
Henceforth, we will only consider the extracted brain of our subjects. 2.3.1.3. Reorientation and tissue segmentation The extracted brain was segmented into grey matter (GM), white matter (WM) and cerebro-spinal fluid (CSF) probability maps using the SPM8 toolbox (Wellcome Department of Imaging...
Total brain volume, bilateral precentral gyrus volume and CSF were calculated using the 7-T T1-weighted images and the Segment Data module in the CAT12 toolbox of SPM12 MATLAB R2021a. Image quality was assessed using the overall image quality (image quality ratings, IQR; >91%) as well as...
An interleaved velocity-sensitised fast low-angle shot pulse sequence was used to study cerebrospinal fluid (CSF) flow in the cerebral aqueduct, and suprat