英语语法分析

Objective to explore the new method to monitor the prognosis of nephroblastoma.

目的探索肾母细胞瘤患儿预后监测的新方法。

Objective: to evaluate the value of ct in diagnosing and staging of nephroblastoma in children.

目的：评价CT对儿童肾母细胞瘤的诊断及分期中的价值。

To date, the angiogenesis activity of nephroblastoma and its regulators have not been well defined.

目前，对于肾母细胞瘤血管生成活性及其调节因素的认识尚不充分。