目的：明确稳态自由运动(SSFP) MRI弥散成像对于鉴别骶骨应力性骨折与骶骨转移瘤是有效的。
Objective. To determine if a steady-state free precession (SSFP) diffusion-weighted MRI is useful for differentiating sacral insufficiency fractures from metastases of the sacrum.
灰色和红色塑料球隐藏了起来，再加上自由权和弹性带，在客厅的角落里，有着似乎永无休止的灰色大理石和铅粉色橡木瘤状的条纹。
The gray and red plastic balls are stashed, along with free weights and elastic bands, in the lounge around the corner, under a seemingly endless bar of pale gray marble and cerused oak burl.
体外活性实验证明，该化合物具有抗氧化清除自由基作用及对血液瘤和实体瘤的细胞毒作用。
In vitro active experiment shows that, the compound has the functions of oxidation resistance, cleaning free radicals and cell toxicity to blood tumor.
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