活体右半肝肝移植超声造影微灌注检查的初步研究

目的 探讨超声造影评价活体右半肝肝移植术后早期血流微灌注的价值.方法 应用超声造影剂声诺维对26例活体右半肝肝移植受者分别于术后1d、7d、15d、30d进行超声造影检查,观察移植肝的微灌注情况,并结合术式进行分析.结果 26例活体右半肝肝移植受者中,15例为正常灌注模式,均未发现血流动力学异常;11例为异常灌注模式,其中8例存在桥血管回流障碍,4例门静脉流量过高.异常灌注模式表现为术后第1d检查动脉早期出现增强过程中的瞬间不同步现象,出现高增强区及低增强区,与周围肝组织相比差异明显,且该差异在随后的几次检查中随时间延长而逐渐消失.结论 活体肝移植术后早期.移植物微灌注异常与人肝血流和出肝血流的异常相关,静脉回流障碍和门静脉过度灌注是主要因素,超声造影可作为评价移植物微灌注的有效方法.

Preliminary study on contrast-enhanced ultrasound micro-perfusion examination for right lobe living-donor liver transplantation

Objective To probe into the value of micro-perfusion examination at the early stage after right lobe living donor liver transplantation by contrast-enhanced ultrasound(CEUS). Methods Twenty-six recipients of right lobe living donor liver transplantation received CEUS examination at 1,7,15 and 30 days respectively after operation using contrast medium SonoVue. Perfusion patterns were observed and analyzed considering operation method. Results Of 26 recipients, 15 cases showed normal perfusion patterns with normal hemodynamics; 11 cases showed abnormal perfusion patterns with abnormal hemodynamics:8 had conduit venous obstruction,4 high portal vein blood flow. The abnormal patterns was in the early arterial phase of enhancement process at the first day examination, showing hyper- and hypo- enhancement area compared with normal liver parenchyma. And the difference gradually disappeared in the subsequent examination. Conclusions Abnormal micro-perfusion patterns are highly related to abnormal inflow and outflow in the early post operation stage. The main reasons are conduit venous obstruction and excessive perfusion of portal vein. CEUS can be used as an effective method in evaluating the graft micro-perfusion.