英语语法分析

The branches and distributions of the iliolumbar artery are studied in detail.

详细观察了髂腰动脉的分支和分布。

The origin of the iliolumbar artery in relation to the plane of the superior aperture of the pelvis is observed.

观察了髂腰动脉的起始部位与骨盆入口平面的上下关系。

Objective: To evaluate the efficacy of iliolumbar tumors treated by both waist artery and internal iliac artery embolization.

目的：探讨腰动脉加髂内动脉栓塞在髂腰部肿瘤治疗中的价值。