Cantwell Colin P, O'Byrne John, Eustace Stephen
Department of Radiology, Mater Misericordiae University Hospital, Eccles St., Dublin 7, Ireland.
AJR Am J Roentgenol. 2006 May;186(5 Suppl):S244-8. doi: 10.2214/AJR.04.0938.
Our objective was to evaluate the efficacy of percutaneous radiofrequency ablation of osteoid osteoma with cooled radiofrequency probes and impedance control energy delivery from a 200-W generator. We also compared the outcome to published data for therapy with a 5-mm noncooled probe and temperature-controlled short-duration therapy protocols.
Radiofrequency ablation was performed on 11 patients with a clinical and radiologic diagnosis of osteoid osteoma. A cooled radiofrequency probe was introduced into the lesion under CT guidance. Twelve minutes of radiofrequency energy was delivered from a 200-W generator under impedance control. Postprocedural pain, function, and satisfaction were evaluated by means of an interview and questionnaire.
All procedures were technically successful. No serious complication occurred. Postoperative pain was scored at a mean of 6.9 +/- 3.06 (95% confidence interval) on a numeric rating scale. Postoperative pain was rated as similar to night pain. By 1 week after therapy, all patients had resolution of pain and returned to normal activity. There was no recurrence during the follow-up period (range, 6-27 months; mean, 14.4 months). Patients rated their satisfaction as high.
Radiofrequency ablation of osteoid osteoma with a high-energy delivery technique is safe and has a high success rate. When compared with patients in a published series using 5-mm probes and manual energy control from lower-output generators, our cohort showed increased postoperative pain scores and an increased interval to symptom resolution.
我们的目的是评估使用冷却射频探头和来自200瓦发生器的阻抗控制能量传输进行经皮射频消融骨样骨瘤的疗效。我们还将结果与已发表的使用5毫米非冷却探头和温度控制短疗程治疗方案的数据进行了比较。
对11例临床和影像学诊断为骨样骨瘤的患者进行射频消融。在CT引导下将冷却射频探头插入病变部位。在阻抗控制下从200瓦发生器传输12分钟的射频能量。通过访谈和问卷评估术后疼痛、功能和满意度。
所有手术在技术上均获成功。未发生严重并发症。术后疼痛在数字评分量表上的平均评分为6.9 +/- 3.06（95%置信区间）。术后疼痛被评为与夜间疼痛相似。治疗后1周时，所有患者疼痛均缓解并恢复正常活动。随访期间（范围6 - 27个月；平均14.4个月）无复发。患者对满意度评价很高。
采用高能量传输技术进行骨样骨瘤的射频消融是安全的，成功率高。与已发表系列中使用5毫米探头和低输出发生器手动能量控制的患者相比，我们的队列术后疼痛评分更高，症状缓解间隔更长。
