Objective To screen the intrinsic points in normal human liver used in image fusion between HIFU and MRI. Methods The ultrasound and MRI examination on the normal human body were performed respectively. The images of ultrasound and MRI were compared for choosing more fixed internal markers and fused by the self-developed fusional software. Results The main internal image registration points were (l)the second hepatic portal that hepatic vein abouchement into inferior vena cava,(2) portal vein trunk and bifurcation of left and right branchs and (3) "I" shaped structure constituted by left branch of portal vein and its subbranches. Conclusion It is feasible that point method used at the normal body' s US-MRI image fusion. The self-developed fusional software is capable of performing the normal human US-MRI image fusion.%目的 筛选健康人体肝脏中的内部标记,应用于超声图像与磁共振成像(US-MRI)之间的图像配准融合.方法 对健康人体分别进行US及MRI检查,对比图像,选择较固定的内部标记,并利用自主开发的融合软件将US与MRI的图像进行融合.结果确定图像配准的主要内部点为:(1)肝静脉汇入下腔静脉的第二肝门;(2)门静脉主干及左右支分支处;(3)门静脉左支与其分支构成"工"字形结构处.结论 点法在进行健康人体的US-MRI图像配准融合时作用是可行的.自主开发的融合软件能够进行健康人体的US-MRI图像配准融合.
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