移植肾彩色多普勒能量图的定量分析研究

Quantitative Analysis of CDE on Transplanted Kindey

目的:探讨彩色多普勒能量图(CDE)定量分析指标及其使用价值。材料与方法:采用电子计算机图像处理技术分析移植肾术后30例正常者和24例急性排斥反应(AR)者移植肾的 CDE,以血流显像在肾脏切面中所占面积与肾切面面积的比值(BFAR)为定量指标。结果:正常组与 AR 组 BFAR 有显著差异,BFAR 增高,AR 的发生率减少。BFAR 不同,对 AR 的诊断效能不同。结论:BFAR 是对 CDE 定量分析的一个有用指标,能够充分发挥 CDE 的优势,提高它的临床应用价值。

Purpose:To establish and evaluate a quantitative index of the blood flow map in Color Doppler Energy Image(CDE).Mate- rials and methods:CDEs of transplanted kidneys including 30 normal and 24 acute rejection(AR)cases were measured by computer image processing technique.Blood Flow Area Rate(BFAR)which was used as a quantitative index for the richness of the blood flow was defined by the fraction of blood flow signal in the kidney's maximal coronary section area.Results:(1)There was significant difference between the BFAR of normal group and that of the AR group.(2)As BFAR rises,the incidence of AR decreases.(3)The diagnostic efficacy of AR varies with BFAR.Conclusion:BFAR is an useful quantitative index and it enhances the chinical value of CDE.