注射流率过快，会增加对比剂外渗的机会。
If the injection rate is excessively high, the contrast medium will exosmose easily.
结论用斜率法进行肝脏灌注成像时，造影剂量和注射流率对灌注参数有所影响。
Conclusion When slope method is used in hepatic perfusion imaging, the dose of contrast agent and injection rate have some influence on hepatic perfusion parameters.
结论多层螺旋CT可对肾脏组织血流灌注进行定量分析，但注射流率影响灌注数值。
Conclusion Multi-slice spiral ct can provide quantitative analysis to renal blood perfusion, but injection flow rate influence the perfusion parameters.
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