加权

Results Sagittal MRI revealed horizontal intravertebral area, hypointense on T1-weighted images and hyperintense with surrounding band of hypointensity on T2-weighted images.

结果 矢状位MRI显示水平方向的带状区， T1加权像为低信号， T2加权像为高信号，周围有低信号区包绕。

MR images show high signal in periatrial white matter on T2-weighted images, and low signal on T1 pre- and post gadolinium.

磁共振影像显示：T2加权像上室周白质高，而在常规和钆造影后T1加权像上是低密度影。

Among 14 cases of trigeminal tumor,12 cases were examined by CT scanning,2 cases by MRI,all of them were confirmed by pathological examination.The density appeared heterogeneous with 6 cases,homogeneous high density with 5 cases and isopyknic with 1 case.Dropped contrast medium,the 12 CT scanning pictures appeared heterogeneous potentialization,and there were no cerebral edema around the tumor.Among 2 cases examined by MRI,T1 weighted image appeared low signal,T2 weighted image appeared high signal.

内容提要三叉神经瘤14例，12例做CT检查，2例做MRI检查，14例术后均经病理检查证实。12例CT扫描呈混杂密度6例，均匀高密度5例，等密度1例，注射造影剂后多呈不均匀强化，肿瘤周围均无脑水肿。2例MRI图像T1加权像呈低信号，T2加权像呈高信号。X线平片示11例有岩骨、颅底骨吸收破坏。

Substituting them into the optimal weighted fusion Wiener filter of the AR signals, a self-turning weighted fusion Wiener filter is presenced, which convergence to the optimal weighed fusion Wiener filter, so that it has the asymptotic optimality.

将它们代入最优加权融合AR信号Wiener滤波器，提出一种自校正加权融合Wiener滤波器。它们以概率1收敛于最优融合Wiener滤波器，因而具有渐近最优性。

Objective To explore the value of diffusion weighed imaging and perfusion weighted imaging in the diagnosis of the ischemic penumbra of superacute infarction.

目的探讨磁共振扩散加权成像和灌注加权成像对早期脑梗死缺血半暗带的诊断价值。方法新西兰大白兔35只，实验组28只，对照组7只。

However,generally speaking,we formulate the weighing factor according for our experiences because of the influences of the factor,which causes the instability of the algorithm and the unconvenience of the design.

但由于其加权因子直接影响融合结果，一般说来都根据平时经验制定其加权因子，导致算法性能很不稳定，设计起来也不方便。

They are calculated in two ways – weighted or unweighted.

计算方法有两种：加权的和不加权的。

By default, the calculation is linear and unweighted, but quadratic and weighted variants are also provided.

缺省情况下，计算是线性的和非加权的，不过也提供二次的和加权的的变体。

And many unweighted statistical accumulators have weighted variants.

许多非加权统计累加器都具有加权的变体。

The modelling methods of old information model, new information model and equal dimension new information model based on GM(1,1) are introduced; and a comparison between reliabilities of the gray unweighted model and the gray weighted model is made.

介绍了GM(1，1)的原息模型、新息模型和等维新息模型的建模方法，比较分析了GM(1，1)加权预测模型和非加权预测模型的可靠性问题。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。