摘要
目的探讨多普勒超声在肝移植中的应用价值。材料和方法对105例原位肝移植的患者分别于术前、术中和术后多次行彩色及频谱多普勒超声检查。结果20例出现排斥反应,多普勒表现为肝静脉频谱变钝,正向波消失,门静脉流速减低,肝动脉阻力指数增高。7例出现肝动脉并发症,其中2例狭窄,5例血栓形成,CDFI主要表现为肝动脉血流信号消失,肝静脉和门静脉充盈良好,经血管造影证实;CDFI发现下腔静脉狭窄1例,门静脉狭窄1例,经球囊扩张后,血流灌注恢复正常。结论多普勒超声对移植肝血流动力学的监测、手术中及术后并发症的早期诊断具有重要作用。
Purpose： To assess the effect of aging on the diffusion properties of normal adult human brain. Materials and methods： Sixty cases of normal adult human brains were examined by using DTI. Apparent diffusion coefficient （ADC） values and fractional anisotropy （FA） values measured on ADC and FA imagings were analyzed statistically. Results： There was no statistical difference among the different anatomic regions at the various ages. Conclusion： There was no effect of aging on the diffusion properties of normal adult human brain.
出处
《中国医学影像学杂志》
CSCD
2005年第5期334-336,共3页
Chinese Journal of Medical Imaging
