目的：探索磁共振肺灌注成像的最佳剂量及其对肺栓塞的诊断价值。

Objective: to optimize the contrast injection protocol for MR pulmonary perfusion imaging (PPI) and toe-valuate its value in the diagnosis of experimental acute pulmonary embolism in pigs.

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目的探讨造影剂强化磁共振肺灌注成像(CEMRPP)对周围型肺栓塞的诊断价值，提高对肺栓塞于ce MRPP表现的认识。

Objective To investigate the value of CE MRPP in diagnosing peripheral pulmonary embolism (PPE) and improve the acknowledgement of the PPE manifestation on CE MRPP.

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目的：采用相位对比法磁共振成像(MRI)测量肺动脉血流量，探讨并评价两肺的血流灌注情况。

AIM: to measure the flow volume of pulmonary arteries by using phase contrast magnetic resonance imaging (MRI) and to investigate the values of phase contrast MRI in assessing pulmonary perfusion.

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目的：采用相位对比法磁共振成像(MRI)测量肺动脉血流量，探讨并评价两肺的血流灌注情况。

AIM: to measure the flow volume of pulmonary arteries by using phase contrast magnetic resonance imaging (MRI) and to investigate the values of phase contrast MRI in assessing pulmonary perfusion.

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