经皮穿刺椎体成形术的影像学研究

目的观察PVP前后影像学表现,探讨其意义.材料和方法40例患者在CT定位下行58例次PVP治疗,其中血管瘤4例次、骨质疏松症6例次、转移瘤48例次.PVP前后行X线平片、CT、MRI检查.结果平片可作为筛选、随访手段.CT定位下PVP治疗安全、准确、并发症少、对照及随访观察可比性好,可同时活检.MRI在观察肿瘤组织水肿、坏死方面有独到的优越性.骨水泥在病灶内的形态与其注射量及病变种类有关.将转移瘤分期有利于PVP效果预测.结论CT定位下PVP治疗简便、精确、安全,便于对照研究及随访.MRI可作为抗肿瘤效果的评价手段.

Imageologic Study on Percutaneous Vertebroplasty

Purpose: To observe the imageologic manifestation of percutaneous vertebroplasty (PVP) and evaluate its significance. Materials and Methods: 40 patients were treated with total 58 times of the percutaneous vertebroplasty (vertebral hemagioma (n=4), osteoporotic vertebral body (n=6), vertebral metastases (n=48)). They were examined by plain film, CT and MRI pro or post PVP. Results: The plain films were capable only of selecting the location of focus or following up the patients. PVP was always performed with CT guidance, CT could display accurate position, less complication, conveniently compare and follow up. CT also can guide needing biopsy. The particular advantage of MRI was the observation of necrosis or edema of the tumor. The types of bone cement were decided with categories of the disease and the dose of bone cement. The stages of metastases were useful for prediction of PVP effect. Conclusion: PVP with CT guidance is accurate, safe, simple and convenient. CT also can be used to compare study and follow up. MRI can be used to evaluate the effect of anti tumor.