Objective To investigate the accuracy and applied value of measurement of pulmonary flow velocity with phase-contrast MRI (PC-MRI).
目的探讨相位对比法MR I (PC - MR I)测量肺动脉血流的准确性以及临床应用价值。
Field test proved that the real time calibration method significantly improved the measurement accuracy of grain flow.
田间试验证明，通过实时标定，测产系统具备以较高精度进行谷物流量测量的能力。
The measurement accuracy of the vehicle flow, vehicle speed and time occupancy are exceed 90%.
对车流量、车速、时间占有率这三大重要交通量进行实时检测，准确率达90%以上。
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