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mottle
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  斑点
    Objective To evaluate the minimal Al_2O_3 mottle (calcification)and nylon fiber signal(tumor) in mammography application of ALVIM statistics phantom by computed radiography(CR).
    目的应用ALVIM统计学体模TRM,探讨乳腺计算机X线摄影(CR)获得尺寸最小的Al2O3斑点(钙化灶)和尼龙纤维(肿块灶)信号的能力。
短句来源
    Results After acquiring the data and judging probability average value P_ det of the ROC curves statistics,five Al_2O_3 mottle (calcification) equal to 0.6250 of 0.22 mm is minimal, and P_ det equal to 0.9000 of 0.55 mm was maximal. There was no significant variation in size P_ det difference between P_ det of 0.20 mm and of 0.25 mm but there was among others.
    结果用概率统计方法获得制作ROC曲线的数据和判断概率平均值Pdet,5种大小不同的Al2O3斑点(钙化灶)中,0·20mm的Pdet=0·6250最小,0·55mm的Pdet=0·9000最大,而0·20mm与0·25mm的Pdet差异无统计学意义,与其他的差异有统计学意义;
短句来源
    This study together with related reports indicated that an effective way of controlling film mottle was to refrain from usmg too high tube voItage and too big intensifying screen factor which translated into too small mAs value.
    本研究结果并结合有关文献表明:控制X线照片斑点的主要措施是管电压不要过高,所用稀土增感因数不宜过大,即所用mAs值不宜过小。
短句来源
  “mottle”译为未确定词的双语例句
    Results 20 cases showed bilateral lung diffuse lesions which were network shadow with mottle, punctate, patchy, nodular and opacification.
    结果20例表现为两肺弥漫性病变,呈两肺网状合并斑片状、小片状、大片状、结节状及两肺磨玻璃状改变。
短句来源
    Objective To evaluate the mottle of screen film by means of studying the Wiener spectrum(WS) of screen film.
    目的 通过实验测试增感屏 胶片组合体系的威纳频谱 (Wienerspectrum ,WS) ,评价X线照片的粒状性。
短句来源
    Results 28 lesions were positioned near middle line,with a CT value of -7~-101Hu,they showed mottle,nodule,cord and irregularity,with clear boundary,without occuping effect.
    结果  2 3例共发现 2 8个病灶 ,2 1个位于中线及其附近结构 ,呈斑点状、结节状、条带状及不规则形 ,CT值为 - 7~ - 1 0 1Hu ,边缘清晰 ,无明显占位效应。
短句来源
  相似匹配句对
    Objective To evaluate the mottle of screen film by means of studying the Wiener spectrum(WS) of screen film.
    目的 通过实验测试增感屏 胶片组合体系的威纳频谱 (Wienerspectrum ,WS) ,评价X线照片的粒状性。
短句来源
    Results 20 cases showed bilateral lung diffuse lesions which were network shadow with mottle, punctate, patchy, nodular and opacification.
    结果20例表现为两肺弥漫性病变,呈两肺网状合并斑片状、小片状、大片状、结节状及两肺磨玻璃状改变。
短句来源
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  mottle
Detection and characterization of defective interfering RNAs associated with the cocksfoot mottle sobemovirus
      
A new RNA of about 900 nt was found in the virions of cocksfoot mottle virus (CfMV) and in infected plants by RNA hybridization and RT-PCR.
      
Specifics of the coat protein gene in Russian strains of the cucumber green mottle mosaic virus
      
The primary structure of the coat protein (CP) gene was examined for pathogenic strain MS-1 and vaccine strain VIROG-43M of the cucumber green mottle mosaic virus (CGMMV).
      
The results of X-ray diffraction studies of a number of proteins and the carnation mottle virus performed over a period from 1970 to 2000 at the laboratory created by Academician B.K.
      
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In this paper the principle and method of testing of RMS(Root Mean Square )graininess of radiograph were described.Two kinds of filrnscreen systetms:CaWO/Fuji and BaFCl:Eu / Fuji,were tested.The results indicated the RMS value of BaFCl Eu /Fuji system was greater than that of CaWO/Fuji system under the same condition,In addition,the RMS values of both systems increased with increase of X-ray tube voltage. The authors discussed the causes of graininess on a radiograph.This study together with related reports...

In this paper the principle and method of testing of RMS(Root Mean Square )graininess of radiograph were described.Two kinds of filrnscreen systetms:CaWO/Fuji and BaFCl:Eu / Fuji,were tested.The results indicated the RMS value of BaFCl Eu /Fuji system was greater than that of CaWO/Fuji system under the same condition,In addition,the RMS values of both systems increased with increase of X-ray tube voltage. The authors discussed the causes of graininess on a radiograph.This study together with related reports indicated that an effective way of controlling film mottle was to refrain from usmg too high tube voItage and too big intensifying screen factor which translated into too small mAs value.

作者介绍了X线照片均方根值(rootmeansquare,RMS)粒状度的测试原理及方法。对Ca-WO_4/Fuji和BaFCI:Eu/Fuji两种屏胶系统在不同条件下的RMS值进行了测试。结果:在同一条件下,稀土增感屏BaFCl:Eu/Fuji胶片系统的RMS值大;随着管电压的升高,两种屏胶系统的RMS值都增大。作者对产生X线照片RMS粒状度的原因进行了讨论。本研究结果并结合有关文献表明:控制X线照片斑点的主要措施是管电压不要过高,所用稀土增感因数不宜过大,即所用mAs值不宜过小。

Purpose: To evaluate the chest roentgenograms and CT scans of twenty-six patients with eosinophilic pneumonia as well as the features of both films after taking cortical hormone. Materials and Methods: There were 8 men and 18 women in this study. The averaged age was 43 years old with a range from 14 to 61 years old. With relevant references, we had analyzed the radiological features of the eosinophilic pneumonia that were clinically diagnosed. Results: Thoracic roentgenograms and CT scans showed extensively...

Purpose: To evaluate the chest roentgenograms and CT scans of twenty-six patients with eosinophilic pneumonia as well as the features of both films after taking cortical hormone. Materials and Methods: There were 8 men and 18 women in this study. The averaged age was 43 years old with a range from 14 to 61 years old. With relevant references, we had analyzed the radiological features of the eosinophilic pneumonia that were clinically diagnosed. Results: Thoracic roentgenograms and CT scans showed extensively diffuse infiltration in pulmonary parenchyma and interstitium respectively. The foci, mainly distributed to the periphery area of lung, varied in different shape such as mottle, military tubercle, reticulate belt and frosted glass. The eosinophil counts in periphery blood increased and the highly dense eosinophil masses were often found in the sputum. Conclusion: We could make diagnoses depending on the features of chest roentgenograms and CT scans as well as the specific change of radiological features after taking cortical hormone.

目的:探讨嗜酸细胞性肺炎的X 线胸片与CT 表现及其服用皮质激素后的变化特征。材料和方法:我院临床证实的嗜酸细胞性肺炎26 例,( 男8 例,女18 例。年龄14 ~61 岁,平均43 岁) 总结其X 线胸片、CT 的影像学表现。结果:胸片与CT 表现为广泛的肺实质或肺间质浸润。病灶形态可分斑片状,结节粟粒状、网条状及兼有磨玻璃状改变。多集中于肺外围。查周围血嗜酸细胞多数增高或痰中常可找到密集的嗜酸细胞。结论:胸片、CT 表现与服用皮质激素后的变化颇具特征,可作为诊断依据。

Objective To evaluate the mottle of screen film by means of studying the Wiener spectrum(WS) of screen film. Methods Three kinds of films including CaWO 4 screen Kodak film, BaFCl:Eu screen Kodak film, and T grain were used in the study. WS values were calculated on the 100 thousand data obtained by scanning on micro densimeter for every film processed as discrete signal by using fast Fourier transform (FFT). Results (1) The WS value of BaFCl:Eu screen Kodak film was 8 26×10 -5 mm 2 when...

Objective To evaluate the mottle of screen film by means of studying the Wiener spectrum(WS) of screen film. Methods Three kinds of films including CaWO 4 screen Kodak film, BaFCl:Eu screen Kodak film, and T grain were used in the study. WS values were calculated on the 100 thousand data obtained by scanning on micro densimeter for every film processed as discrete signal by using fast Fourier transform (FFT). Results (1) The WS value of BaFCl:Eu screen Kodak film was 8 26×10 -5 mm 2 when the spacial frequency was 0.1 LP/mm, which was 2.25 times of T grain′s, and 1.53 times of CaWO 4 screen Kodak film′s. The WS value of BaFCl:Eu screen Kodak film was 5.23×10 -5 mm 2 when the spacial frequency was 0.5 LP/mm, which was 2.68 times of T grain′s, and 1.42 times of CaWO 4 screen Kodak film′s. (2) The WS values of T grain increased when voltage go up to 90 kV from 80 kV. Conclusion The WS value of BaFCl:Eu screen Kodak film was largest while the WS value of T grain was smallest, so the T grain technique should be used.

目的 通过实验测试增感屏 胶片组合体系的威纳频谱 (Wienerspectrum ,WS) ,评价X线照片的粒状性。方法 制作CaWO4 屏 Kodak片、BaFCl:Eu屏 Kodak片、T颗粒技术 3种增感屏 胶片组合体系的 10cm× 10cm粒状性抽样照片 ,用显微密度计扫描 ,获得 10万个密度值 ,作为离散随机信号来处理 ,用快速傅立叶变换 (fastFouriertransform ,FFT)计算WS。结果  (1)BaFCl:Eu屏 Kodak片的WS值 :当空间频率为 0 1LP/mm时 ,WS值为 8 2 6× 10 -5mm2 ,分别是T颗粒技术、CaWO4 屏 Kodak片取得照片WS值的 2 2 5倍、1 5 3倍 ;当空间频率为 0 5LP/mm时 ,WS值为 5 2 3× 10 -5mm2 ,分别是T颗粒技术、CaWO4 屏 Kodak片取得照片WS值的 2 6 8倍、1 42倍。 (2 )管电压由 80kV增加到 90kV时 ,T颗粒技术在各频率下的WS值均有所增加。结论 BaFCl:Eu屏 Kodak片组合体系的WS最大 ,T颗粒技术改善了照片的斑点问...

目的 通过实验测试增感屏 胶片组合体系的威纳频谱 (Wienerspectrum ,WS) ,评价X线照片的粒状性。方法 制作CaWO4 屏 Kodak片、BaFCl:Eu屏 Kodak片、T颗粒技术 3种增感屏 胶片组合体系的 10cm× 10cm粒状性抽样照片 ,用显微密度计扫描 ,获得 10万个密度值 ,作为离散随机信号来处理 ,用快速傅立叶变换 (fastFouriertransform ,FFT)计算WS。结果  (1)BaFCl:Eu屏 Kodak片的WS值 :当空间频率为 0 1LP/mm时 ,WS值为 8 2 6× 10 -5mm2 ,分别是T颗粒技术、CaWO4 屏 Kodak片取得照片WS值的 2 2 5倍、1 5 3倍 ;当空间频率为 0 5LP/mm时 ,WS值为 5 2 3× 10 -5mm2 ,分别是T颗粒技术、CaWO4 屏 Kodak片取得照片WS值的 2 6 8倍、1 42倍。 (2 )管电压由 80kV增加到 90kV时 ,T颗粒技术在各频率下的WS值均有所增加。结论 BaFCl:Eu屏 Kodak片组合体系的WS最大 ,T颗粒技术改善了照片的斑点问题 ,其WS值最小 ,故最好是采用T颗粒技术。

 
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