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Preoperative MRI was performed in all cases.Tumor/white matter signal intensity ratio were measured in T1WI、T1、WIenhanced imaging and T2WI. 所有病例均行MRI检查并测量计算T1WI、T1WI增强及T2WI上肿瘤与脑白质信号强度比值。
Assessment of fetal lung development by MRI signal intensity ratio of lung to liver MRI肺与肝脏信号强度比值评估胎儿肺发育不良的价值
Signal intensity ratio (SIR) 信号强度比
Signal intensity ratio 信号强度比
The photometric signal-to-noise ratio is roughly proportional to the square root of the signal intensity. 光度计的信噪比与信号强度的平方根粗略成比例。
Splitting Intensity Ratio of Three-Element Wollaston Prism[J]. 引用该论文邓红艳;吴福全;郑萌萌.
This signal intensity depends on a number of factors. 信号的强弱取决于多种因素。
Quadriceps and patellar tendons show normal signal intensity. 四头肌和髌韧带显示正常信号强度。
Of all 24 lesions,the signal intensity was variant on T 1WI an T 2WI. 病灶在T1WI和T2 WI上信号多变。
MR showed low signal intensity on T?1WI and iso?signal intensity on T?2WI. MRI表现为SE序列T1加权低信号，T2加权等信号。
Most of benign lesions (10/12, except cysts) presented signal intensity loss. 良性 14例 ,多数良性病变 (10 /12 ,囊肿除外 )信号可见不同程度减低。
The size, configuration and signal intensity of the medial meniscus are normal. 中间半月板的大小、配置和信号强度是正常的。
The signal intensity of background in PC was obviously lower than that in TOF,but the signal intensity of vessels and the ratio between the signal intensity of vessels and that of the background were higher in PC than that of TOF( P <0 001). PC法背景信号强度明显低于TOF法 ;而血管信号强度和血管背景信号强度比高于TOF法 (P <0 0 0 1)。
Hounsfield units (H), signal intensity index (SII), adrenal-to-spleen chemical shift ratio (ASR), adrenal-to-liver chemical shift ratio (ALR) and adrenal-to-muscle chemical shift ratio (AMR) were obtained for each adrenal mass. 测量H(平扫CT值)及SII(信号强度指数)、ASR(肾上腺-脾脏化学位移比率)、ALR(肾上腺-肝脏化学位移比率)、AMR(肾上腺-肌肉化学位移比率)。
The true temperature inside the sample at nominal temperature 5.6 K was calculated to be about 7 K by taking into account of the intensity ratio of R1 and R2 lines. 利用R_1和R_2线的荧光强度比;计算了标称温度为5.;6K时的样品真实温度为7K。
The results show that the X-ray intensity ratio obtained from the present set of MACs is of better agreement with the ratio experimentally measured values. 用几套数据代入修正公式进行反算，得到的强度比与实验测量的标准硼化物的强度比进行比较指出，我们的数据符合得较好。
On the GE images, one can often see a black rim that surrounds regions with heterogeneous signal intensity. GE图像中，经常可以看到不均匀密度信号影周围有一圈黑色包绕。
Most prominently omitted by Barro, among variables often shown in this literature to be strongly related to growth, are the trade intensity ratio and the black market premium. 巴罗教授最大的忽略，就是贸易强度比率（tradeintensityratio）和黑市溢价（theblackmarketpremium）。在这篇文献中，他讲了很多与增长具有密切关系的变量，但是，这两个变量被忽略了。
The results show that the method error is related to aerosol-molecule backscattering ratio and the measurement error is related to signal intensity and aerosol-molecule backscattering ratio. 结果表明：方法误差和气溶胶与分子后向散射比有关,噪声引起的测量误差与信号强度和气溶胶与分子后向散射比有关。
Conclusion Alter midtrimester pregnancy, low ratio of lung-to-liver signal intensity no MRI indicates pulmonary hypoplasia with urinary anomaly in fetus, especially in those with bilateral anomalies. 结论中期妊娠后，胎儿肺与肝脏信号强度比值降低可以高度提示泌尿系统畸形伴发的肺发育不良，尤其在双侧性病变中。