计算机测量肺动脉和背景噪声的信号强度，计算出肺动脉的信噪比(SNR)，并对肺动脉分支数量进行计数定量分析。
Image quality were quantified by measuring signal-to-noise ratio (SNR) of pulmonary arteries and counting the Numbers of pulmonary arteries.
计算机测量肺动脉和背景噪声的信号强度，计算出肺动脉的信噪比(SNR)，并对肺动脉分支数量进行计数定量分析。
Image quality were quantified by measuring signal-to-noise ratio (SNR) of pulmonary arteries and counting the Numbers of pulmonary arteries.
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