和上面CBF类似,临床上多用相对脑血容量(rCBV)来反映局部脑血容量的状态。 3、平均通过时间(mean transit time, MTT) 指血液流经血管结构时,包括动脉、毛细血管、静脉,所经过的路径不同,其通过时间也不同,因此用平均通过时间表示,主要反映的是对比剂通过毛细血管的时间(血液...
和上面CBF类似,临床上多用相对脑血容量(rCBV)来反映局部脑血容量的状态。 3、平均通过时间(mean transit time, MTT) 指血液流经血管结构时,包括动脉、毛细血管、静脉,所经过的路径不同,其通过时间也不同,因此用平均通过时间表示,主要反映的是对比剂通过毛细血管的时间(血液由动脉流入至静脉流出的时间)。 该值越...
In North America, Central Time shares a border withEastern Time(ET) in theeastand withMountain Time(MT) in thewest. What Does CT Time Zone Mean? Unlike other time zone denominations, which have a fixed time, Central Time refers to a geographical area where the time changes twice yearly as...
Why is '-ed' sometimes pronounced at the end of a word? What's the difference between 'fascism' and 'socialism'? Popular in Wordplay See All What do SCOTUS, POTUS, and FLOTUS mean? More Words with Remarkable Origins Terroir, Oenophile, & Magnum: Ten Words About Wine ...
3、平均通过时间(mean transit time, MTT) 指血液流经血管结构时,包括动脉、毛细血管、静脉,所经过的路径不同,其通过时间也不同,因此用平均通过时间表示,主要反映的是对比剂通过毛细血管的时间(血液由动脉流入至静脉流出的时间)。 该值越大,说明微循环越不通畅。
Why is '-ed' sometimes pronounced at the end of a word? What's the difference between 'fascism' and 'socialism'? Popular in Wordplay See All What do SCOTUS, POTUS, and FLOTUS mean? More Words with Remarkable Origins Terroir, Oenophile, & Magnum: Ten Words About Wine ...
CT perfusion mean transit time maps optimally distinguish benign oligemia from true "at-risk" ischemic penumbra, but thresholds vary by post- processing ... S.,Kamalian,A.,... - 《American Journal of Neuroradiology》 被引量: 96发表: 2011年 Beyond mismatch: evolving paradigms in imaging the...
Multiphasic CTA (3 phases in our institution) mRS: Modified rankin’s score NCCT: Non contrast computed tomography PWI: Perfusion-weighted imaging rCBF: Relative cerebal blood flow rMTT: Relative mean transit time Tmax: Time to maximum of the residue function VOF: Venous output function...
MeanExt/SumExt算子反向使用了SumGrad实现,GPU后端出现 ShapeCalc + N*TupleGetitem + RealMakeTuple算子组合,触发该问题。 使用如下脚本测试ReduceSum算子即可复现: import pytest import numpy as np import mindspore as ms from mindspore import nn from mindspore import Tensor from mindspore.ops.operations impor...
the mechanism of injury is when assessed in the prehospital setting. In a study evaluating delays of stroke thrombolysis pathways, mean time to CT was 60 min11. We found a median time to CT of 24 min for children, 10 min for adults and 11 min for elders. A significant decrease in in...