Department of Clinical Radiology, University of Munich Munich, Germany.
Clin Hemorheol Microcirc. 2011;48(1):149-60. doi: 10.3233/CH-2011-1398.
To evaluate the benefit of CEUS (contrast enhanced ultrasound) regarding depiction of ischaemic lesions and AVFs (arterio venous fistula) in renal transplants compared to standard ultrasound (US) (grey-scale and color Doppler).
In this study 22 patients suspected of having acute vascular complication after renal transplantation were investigated using standard ultrasound (grey-scale US and color Doppler US) and CEUS, respectively. Validity of the respective US-techniques regarding depiction of ischaemic lesions and AVF was compared. Dynamic CTA (computed tomography angiography) served as the standard of reference.
In 10 renal transplants arterial embolism associated with kidney infarctions were observed. Very good correlation to dynamic CTA was yielded using CEUS, whereas grey scale US and color Doppler US was limited in the accurate depiction of renal infarctions. Additionally CEUS was superior in displaying arteriovenous fistulas compared to standard US.
CEUS as a fast and bedside available imaging modality not associated with dose exposure or renal toxicity facilitates improved detection of ischaemic lesions and AVFs compared to standard US and thus should be considered for short term follow up of renal transplants.
与标准超声（灰阶和彩色多普勒）相比，评估 CEUS（对比增强超声）在描述肾移植后缺血性病变和动静脉瘘（AVF）方面的益处。
本研究对 22 例疑似肾移植后急性血管并发症的患者分别进行了标准超声（灰阶超声和彩色多普勒超声）和 CEUS 检查。比较了两种 US 技术在描述缺血性病变和 AVF 方面的有效性。动态 CTA（计算机断层血管造影）作为参考标准。
在 10 例肾移植中，观察到动脉栓塞伴肾梗死。CEUS 与动态 CTA 具有很好的相关性，而灰阶超声和彩色多普勒超声在准确描述肾梗死方面存在局限性。此外，CEUS 在显示动静脉瘘方面优于标准 US。
CEUS 作为一种快速、床边可用的成像方式，不伴有剂量暴露或肾毒性，与标准 US 相比，更有利于检测缺血性病变和 AVF，因此应考虑用于肾移植的短期随访。
