Gaschen Lorrie, Angelette Nik, Stout Rhett
Department of Veterinary Clinical Sciences, Louisiana State University, Baton Rouge, LA 70803, USA.
Vet Radiol Ultrasound. 2010 Nov-Dec;51(6):634-7. doi: 10.1111/j.1740-8261.2010.01707.x.
Herein, we describe the normal contrast-enhanced harmonic, color, and power Doppler ultrasonographic characteristics of the medial iliac lymph nodes in healthy dogs. Contrast-enhanced harmonic ultrasonography of the medial iliac lymph nodes was performed on 14 healthy dogs after intravenous administration of the lipoprotein-bound inert gas-filled microbubble contrast media Definity. Time-pixel intensity curves were generated for 1-min postinjection. Quantification of these curves was performed using Philips QLab software. Non-contrast-enhanced power and color Doppler examinations were performed in each node to assess vascular patterns subjectively. Normal lymph nodes exhibited a mean contrast wash-in phase beginning at 6.3 s from the time of injection with mean peak pixel intensity at 12.1s. Angioarchitecture was best visualized with contrast-enhanced harmonic ultrasound compared with power and color Doppler. Normal lymph nodes in dogs have a central artery with a centrifugal and uniform branching pattern. Contrast-enhanced harmonic ultrasonography is a noninvasive examination that demonstrates improved visibility of the intranodal architecture of healthy medial iliac lymph nodes in dogs compared with conventional, non-contrast-enhanced Doppler methods that may have future clinical applications.
在此，我们描述了健康犬髂内淋巴结的正常对比增强谐波、彩色和能量多普勒超声特征。在14只健康犬静脉注射脂蛋白结合的惰性气体填充微泡造影剂Definity后，对其髂内淋巴结进行了对比增强谐波超声检查。在注射后1分钟生成时间-像素强度曲线。使用飞利浦QLab软件对这些曲线进行定量分析。对每个淋巴结进行非对比增强能量和彩色多普勒检查，以主观评估血管模式。正常淋巴结的平均对比剂注入期从注射时起6.3秒开始，平均峰值像素强度出现在12.1秒。与能量和彩色多普勒相比，对比增强谐波超声能更好地显示血管结构。犬的正常淋巴结有一条中央动脉，呈离心且均匀的分支模式。与传统的非对比增强多普勒方法相比，对比增强谐波超声检查是一种无创检查，它能更好地显示健康犬髂内淋巴结的结内结构，可能具有未来的临床应用价值。
