The signal to noise ratio (SNR) of tumors, contrast to noise ratio (CNR) and signal intensity ratio (SIR) of tumors and normal liver were calculated and analyzed.

计算不同图像中肿瘤信噪比（SNR）、肿瘤与肝脏对比噪声比（CNR）及信号强度比（SIR）等数据，并进行统计学分析。

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Signal to Noise Ratio( SNR): The ratio of the signal to the random noise in a set of data.

信噪比：平均到一个数据单元的信号与随机噪声的比值。

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The miniaturization of pixel size impacts performance of light sensitivity and signal to noise ratio (SNR) in today's 1.12 micrometer pixel image sensors.

ENGADGET: Toshiba preps 13MP phone camera sensor that promises low-light shooting without the noise

The sensor's 720p HD video is captured in full field-of-view (FOV) with 2 x 2 binning, which doubles the sensitivity and improves the signal-to-noise ratio (SNR).

ENGADGET: OmniVision unveils 5MP BSI sensor that takes low light cameras further into the entry level

Studio-grade components, which include external digital-to-analog converters (DACs) that deliver 127dB signal-to-noise ratio (SNR), sockets for swappable Op-Amps, a high-end 80mW into 600 ohm headphone amplifier, and 192kHz pass through, are used to deliver phenomenal audio quality.

ENGADGET: Creative reveals Sound Blaster ZxR, Zx, and Z PCI-Express sound cards, pumps up the volume