血流动力学对能量多普勒显像的影响:血流速度的影响  

The Effect of Hemodynamics on Power Doppler Imaging:The Effect of Blood Velocity

作　　者：王建宏[1,2,3] 钱蕴秋[1,2,3] 李志宏[1,2,3] 朱霆[1,2,3] 吴琳 

机构地区：[1]西安市第四军医大学西京医院超声诊断科 [2]第四军医大学计算机教研室 [3]解放军沈阳空军医院B超室

出　　处：《中国超声医学杂志》1999年第8期564-566,共3页Chinese Journal of Ultrasound in Medicine

摘　　要：目的：在实验模型中观察血流速度对能量多普勒显像（ＰＤＩ）的影响。方法：在３ｍｍ内径硅胶管中模拟不同血流速度（２．０～３３．２ｃｍ／ｓｅｃ）的血流。记录ＰＤＩ血流图，用计算机分析血流的彩色像素面积（ＣＰＡ）和彩色亮度（ＣＶ）。结果：血流速度与ＰＤＩ血流的ＣＰＡ和ＣＶ呈正相关，其中ＣＰＡ：ｒ＝０．８３４，Ｐ＜０．０１；ＣＶ：ｒ＝０．８４８，Ｐ＜０．０１，尤其在血流速度为８．３ｃｍ／ｓｅｃ以下时变化最明显。结论：血流速度对ＰＤＩ血流的血流面积和亮度均有影响。Objective: To investigate the effect of different blood velocities on power Doppler imaging(PDI). Methods: The blood flow models of varied velocities of 20cm/sec to 332cm/sec were created in 3mmdiameter silicon tubes.The recorded PDI imagings were compared by calculating and analyzing the color pixel areas and the flow color values. Results: Positive correlations between the blood flow rate and the color pixel area(r=0843,P<001)and color value of PDI blood flow(r=0848,P<001),and the changes especially obvious when the blood flow rate below 83cm/sec. Conclusion: The blood dynamic factors influencing PDI were complex.This experiment in vitro proved that blood velocity did affect the color value and the flow area of PDI.

关 键 词：能量多普勒显像 血流速度 血流动力学 

分 类 号：R445.1[医药卫生—影像医学与核医学]