灰阶

然后，系统可以将图像分成2x3灰阶像素的小块，每个小块包含一个字符；这是上图显示的特征提取步骤。

Next , the system might divide the image into blocks of2 x3 grayscale pixels , each block containing a single character ; this is the feature extraction step shown above .

然后，将每个像素的灰阶值提供给6个输入层节点。

Each pixel 's grayscale value is then fed to each of six input layer nodes .

应用灰阶率量化分析重建CT图像清晰度研究

Quantitative Analysis of the Definition of Rebuilding CT Images Using the Grayscale-Rate

B彩对病变的诊断准确率与黑白灰阶显示的结果相近，统计学无显著差异。

The correct rates of diagnosis were no significant differences between color scale ultrasound and white-black ultrasound .

结果：两组回声灰阶（LEVEL）及透声像素（MAX）治疗前后比较均有显著差异（P<0.01）。

Results : Both differences of Level and Max before and after treatment in two groups were signifieant ( P < 0.01 ) .

方法对42张CT片依片基分为两组进行复制，通过计算灰阶率分析图像清晰度和影响清晰度因素。

Methods Forty two rebuilt CT films were divided into two groups upon the base , then the definition of images was analyzed by calculating the gray scale rate .

肝癌的灰阶超声、超声组织定征及多普勒超声与CD34、P53及PCNA表达间关系研究

Relationship between Scale Ultrasound and Ultrasound Tissue Characterization and Doppler Sonography with the Expression of CD34 , P53 and PCNA in Hepatocarcinoma

CPS及CCI灰阶超声造影成像技术诊断肝脏局灶性病变应用价值

Diagnosis of focal hepatic lesions with contrast-enhanced gray-scale ultrasonography with technique CPS and CCI

丹参组栓塞侧皮层及海马c－fos基因表达亦增多，灰阶为135.00±2.05，对侧为167.00±2.00（P＜0.001）。

The results showed that c-fos gene expression in cerebral cortex and hippocampus of ischemic sides was significantly increased as compared to nonischemic sides ( P < 0 . 001 ) .

灰阶是透过OLED画素在开启状态时的时间来控制。

Levels of grey scale are then controlled via the time for which the OLED pixel is on .

灰阶超声造影对兔荷VX2瘤前后肝实质血流灌注的对照研究

Gray-scale contrast enhancement in rabbit liver before and after VX _2-bearing

正常早期妊娠经阴道超声及腹部超声的显示率与HCG水平的相关分析腹部灰阶超声检查程序及诊断思维

The analysis of the relationship between the diagnosis rate of transvaginal ultrasound and abdominal ultrasound for normal early pregnancy and serum hCG

灰阶超声造影对正常肝实质及VX2肿瘤血流动力学的对照研究

Gray-scale contrast enhancement ultrasonography in rabbit liver and VX_2 tumor

获取每个关节的灰阶（GS）和强力多普勒（PD）信号，采用半定量法为每个参数进行评分（0-3）。

Individual joints were scanned for grey scale ( GS ) and power Doppler ( PD ) signal using a semi-quantitative scoring scale ( 0-3 ) for each parameter .

在LCD源驱动芯片设计中，为了将输入的数字信号转换成对应的灰阶电压，送到输出缓冲进行输出，需要一个数模转换电路。

In order to convert the digital signals into corresponding gamma voltages and send them to output buffer , we need a DAC circuit in the design of LCD source driver .

方法分析40例经CT扫描的肺部孤立性肿块，利用彩色多普勒血流显像和脉冲多普勒检查，灰阶二维超声对肿块形态、大小、边界及内部回声特征进行观察。

Methods 40 cases of pulmonary mass obtained the results with CT scan were analyzed retrospectively and detected with colorful Doppler of blood flow image , impulse and two-dimensional ultrasonics in tumor shape , size , edge and inner reflection .

采用实时灰阶超声造影技术观察肿瘤增强模式及造影参数：峰值强度（PI）和达峰时间（TTP）。

Real-time gray scale CEUS was performed to observe the enhancement patterns and parameters including peak intensity ( PI ) and time to peak ( TTP ) .

软件部分主要有FPGA信号采样、动态滤波、包络检波、对数压缩、非均匀校正；DSP完成图像的空间滤波、帧相关、灰阶映射和存储。

The software section performs signal sampling , dynamic filtering , envelope detection , logarithmic compression , and non-uniformity correction in the FPGA , and image interpolation , amplification , noise removal , storage in the DSP .

本文利用肝B超直方图对正常人84例、高血脂99例、脂肪肝45例探查，发现直方图近场与远场之距0位点数、谱宽、平均灰阶（AV）有明显的规律性变化。

Histogram patterns of hepatic B-ultrasonography was used to observe 84 cases of normal controls , 99 patients with hyperlipidemia and 45 patients with fatty liver .

目的应用实时灰阶超声造影技术评价乳腺肿瘤新生血管，探讨不同微血管密度（MVD）乳腺肿瘤的超声造影表现。

Objective To discuss the real-time gray scale contrast-enhanced ultrasonographic ( CEUS ) patterns and parameters of breast tumors with different level of microvessel density ( MVD ) .

目的探讨重T2加权灰阶反转成像检查对大垂体腺瘤及其周围结构的显示作用。

Objective To explore the effect of heavily T2 weighted reversed ( T2R ) MR images on showing the relationship of large pituitary adenomas and its surrounding structures .

在灰阶超声上，24例（73%）RCC可见无回声边和/或肿瘤内无回声区；

Findings on grey-scale US included : an anechoic rim and / or intratumoral cysts were in 24 of 33 ( 73 % ) renal cell carcinoma ( RCC ) cases ;

方法测定纯净水及0.1%至2.0%不同浓度淀粉悬液的NTHI及FI的视频信号灰阶值及CT值；

Methods To determin the NTHI and FI video signal gray scale values and CT values of pure water and 0.1 % to 2.0 % various concentraion of amylum suspension .

方法：应用基波CPA及CEUS检测43例肝转移癌和35例肝良恶性肿瘤。首先应用二维灰阶超声常规检查肝脏，观察肝脏肿瘤的位置、大小、形态、内部回声；

Methods : Forty-three cases of metastatic liver tumors ( MLT ) and 35 cases of hepatic benign and malignant tumors were examined with basic wave CPA and PIH CEUS .

数字CR医学放射图像以其高灰阶分辨率、强大的计算机图像后处理功能、小辐射剂量、无胶片诊断、异地会诊等优势，深受放射医生的青睐，已成为医学成像技术新的热点。

Digital CR medicine radiation image is high in doctor 's favor and has become medicine imaging technology new hotspot because of its high gray contrast 、 powerful computer disposal function 、 little radiation dosage 、 non-film diagnosis 、 different area consultation .

根据手术分娩后羊水性状分为正常羊水组（16例）及羊水粪染组（11例），比较两组间EI灰阶（GS）、分贝（dB）差异。

After operation , they were divided into two groups according to the character of the amniotic fluid , and compared their difference between gray scale ( GS ) and decibel ( dB ) .

方法：10只健康家兔经耳缘静脉团注001mLkg的脂氟显，采用视觉评分，动态观察肝、肾的二维灰阶增强效果。

Methods : Ten normal rabbit livers and kidneys were imaged with second harmonic imaging before and after intravenous bolus injection of 0 01 ml / kg of the lipid encapsulated perfluoropropane microbubble contrast agent The subjective scores were used to evaluate contrast effects .

方法对17例FNH的灰阶超声、彩色多普勒超声、超声造影诊断情况进行分析比较。

Methods The diagnosing results of gray-scale ultrasound , color Doppler ultrasound and contrast-enhanced ultrasound in 17 case of FNH were compared and analyzed .

采集乳头肌水平短轴二维灰阶动态图，应用2DS测量各节段心肌径向Vs、S、Sr，对比正常与梗死节段心肌测值。

The regional radial Vs , S and Sr were measured by 2DS from papillary level short-axis view and the values of the infarcted segments were compared with non-infarcted segments .

二维灰阶血流成像技术（B-Flow）评价颈动脉内径与面积准确性的动物实验及临床研究

Animal Experiment and Clinical Study on the Accuracy of B-Flow Technique in Evaluating the Diameter and Area of the Carotid Artery