Biswas Rohan, Patel Prashant, Park Dae W, Cichonski Thomas J, Richards Michael S, Rubin Jonathan M, Hamilton James, Weitzel William F
Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109-5725, USA.
Semin Dial. 2010 Jan-Feb;23(1):105-9. doi: 10.1111/j.1525-139X.2009.00684.x.
Ultrasonography for the noninvasive assessment of tissue properties has enjoyed widespread success. With the growing emphasis in recent years on arteriovenous fistulae (AVFs) for dialysis vascular access in patients with end-stage renal disease, and on reducing AVF failures, there is increasing interest in ultrasound for the preoperative evaluation of the mechanical and elastic properties of arteries and veins. This study used high-resolution ultrasound with phase-sensitive speckle tracking to obtain in vivo vein elasticity measurements during dilation. The results of this novel ultrasound technique were then compared to a computer model of venous strain. The computer model and ultrasound analysis of the vessel wall demonstrated internally consistent positive and negative longitudinal strain values as the vein wall underwent dilation. These results support further investigation of the use of phase-sensitive speckle tracking for ultrasound venous mapping for preoperative vascular access evaluation.
用于组织特性无创评估的超声检查已取得广泛成功。近年来，随着对终末期肾病患者透析血管通路的动静脉内瘘（AVF）的重视日益增加，以及对减少AVF失败的关注，人们对超声用于术前评估动脉和静脉的机械和弹性特性的兴趣也在增加。本研究使用具有相位敏感散斑跟踪的高分辨率超声来获取静脉扩张期间的体内静脉弹性测量值。然后将这种新型超声技术的结果与静脉应变的计算机模型进行比较。当静脉壁扩张时，血管壁的计算机模型和超声分析显示出内部一致的正负纵向应变值。这些结果支持进一步研究将相位敏感散斑跟踪用于超声静脉成像以进行术前血管通路评估。
