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.

• 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。