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噪声比
    HARMONICS TO NOISE RATIO ANALYSIS OF PATHOLOGICAL SPEECH SIGNALS
    病变语音信号的谐波噪声比分析
    And for those 40 cooperative patients with cerebral infarction, the signal noise ratio (SNR) and contrast noise ratio (CNR) were compared.
    对配合检查的40例脑梗死患者对比图像的信噪比(SNR)和对比噪声比(CNR)。
    Acquisition Time (TA), Signal to Noise Ratio (SNR), Contrast to Noise Ratio (CNR), integrity of vessel wall, blood flow artifact were measured and compared in each group with different parameters.
    分别测量和比较各组内不同扫描参数时序列的采集时间(TA)、图像信噪比(SNR)、对比噪声比(CNR)、靶血管壁完整性和血流伪影。
    The signal to noise ratio (SNR), liver to spleen contrast to noise (L S CNR), lesion CNR and detection ratio of lesions were measured.
    比较图像的信噪比 (SNR)、肝脾对比噪声比 (L SCNR)、病灶对比噪声比(CNR)及病灶检出率。
    Contrast noise ratio (CNR) between lesion and liver tissue for DWI and T2WI were measured.
    计算在DWI与T2WI上病灶与肝组织之间的对比噪声比 (CNR)并予以比较。
    0.61±0.12( F =22.47, P <0.01)and the contrast to noise ratio were 16.01±5.03;
    0.61±0.12(F=22.47,P<0.01); 肺实质与胸壁肌肉的对比噪声比为16.01±5.03;
    Quality and quantity analysis were conducted based on contrast to noise ratio (CNR) and image quality of various sequences.
    进行了图像对比噪声比(CNR)值的测量,分析比较常规SE序列和动态增强的图像质量、病灶检出情况和病灶与周围胸壁深层结构的显示情况。
    ②The tri-phasic VIBE signal characteristics of the pancreatic masses including the signal to noise ratio(SNR) and contrast to noise ratio(CNR) of the lesion;
    ②肿块多期强化特征,计算病灶的信噪比(SNR)和对比噪声比(CNR);
    Methods:In 16 ECs,we measured the signal intensity(SI)and the value of ADC on T_1WI/T_2WI,FLAIR and DWI,calculated contrast ratio (CR) and contrast noise ratio (CNR).
    方法:ECs16例,测量其T1WI、T2WI、FLAIR及DWI上病灶信号强度和ADC值,计算组织间对比度(CR)和对比噪声比(CNR)。
 

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