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30％～70％的肿瘤病人发生骨转移,且常累及脊柱。临床上,大多数的脊柱转移瘤病人都要进行放疗。为了优化放射剂量并得到满意的治疗效果,需要一种可准确评估放疗疗效的方法。X线平片、核素骨扫描、常规SE序列MR成像等方法虽均可发现脊柱骨髓的一些病理改变,但用于监测、评估放射治疗对脊柱转移瘤的疗效时,其效果不能令人满意。作者对一组脊柱转移瘤病人放疗前后的MR扩散加权成像进行了研究。
30% to 70% of the tumor patients with bone metastases, and often involving the spine. Clinically, most patients with spinal metastases have to radiotherapy. In order to optimize the radiation dose and obtain a satisfactory therapeutic effect, a method that can accurately evaluate the radiotherapy efficacy is needed. X-ray, radionuclide bone scan, conventional SE MR imaging and other methods may find some bone marrow spinal pathological changes, but for monitoring and assessing the efficacy of radiation therapy on spinal metastases, the effect is not satisfactory . The authors studied the MR diffusion weighted imaging of a group of patients with spinal metastases before and after radiotherapy.