目的 研究核磁共振(MR)引导的海马保护技术应用于小细胞肺癌全脑放射治疗(放疗)的效果。方法 对确定行全脑放疗的30例小细胞肺癌脑转移患者,行常规放疗CT定位后以定位体位行全头颅MR平扫,将计算机断层扫描(CT)和MR的T1加权像在Monaco 5.1计划系统上进行精准融合,勾画全脑放疗及海马区域,在海马区域三维方向上分别外扩5、15 mm作为海马与计划靶区之间的剂量跌落,每一例患者在Monaco 5.1计划系统上按照不保护海马组织以及外扩5、15 mm进行保护设计3个容积旋转调强技术(VMAT)放疗计划,观察海马组织的平均及最大放疗剂量。结果 增加保护海马组织之后,3个放疗计划的D100均≥95%,每例的3个放疗计划间D100比较差异无统计学意义(P>0.05);设置外扩5、15 mm的剂量跌落区后,左、右海马的平均剂量、最大剂量均明显降低,而且3个放疗计划的海马平均剂量、最大剂量之间对比差异有统计学意义。结论 小细胞肺癌脑转移患者进行全脑放疗时,利用MR引导的海马保护技术并设置外扩15 mm的剂量跌落区,能够显著降低海马的剂量,达到保护目的。
Objective To explore the application of MR guided hippocampal avoidant whole brain radiotherapy(WBRT)for small cell lung cancer(SCLC).Methods Thirty SCLC patients with brain metastases who underwent WBRT were enrdled.After routine CT localization was performed,and a head MR was performed in a the same position.T1 weighted images of MR and CT images were accurately fused on the Monaco 5.1 planning system.The entire brain tissue and hippocampus region were delineated.The dose drop areas between the hippocampusand the planned target area were expanded 5mm and 15mm in the three-dimensional direction of the hippocampus,respectively.Three volumetric modulated arc therapy(VMAT)radiotherapy plans were designed for each patient on the Monaco 5.1 planning system based on whether the hippocampal tissue was avoid.The average and maximum doses of hippocampal tissue were observed.Results After the avoidance of hippocampal tissue,the D100 of the three radiotherapy plans reached ≥95%,and there was no significant difference in D100 between the three radiotherapy plans in each case.After setting dose drop areas of 5mm and 15mm for external expansion,the average and maximum doses of the left and right hippocampus were significantly reduced,and there was a significant difference in the comparison between the average and maximum doses in the hippocampus of the three radiotherapy plans.Conclusions MR guided hippocampal avoidant technology and the setting of a 15 mm dose drop area can significantly reduce the dose to the hippocampus in patients with SCLC undergo whole brain radiotherapy.
目的 评价不同间变性淋巴瘤激酶(ALK)抑制剂联合安罗替尼治疗非小细胞肺癌(NSCLC)的疗效。方法 收集ALK突变阳性NSCLC患者的临床资料,筛选服用ALK抑制剂疗效不佳再加用安罗替尼的病例。根据不同的用药方案分为阿来替尼+安罗替尼,塞瑞替尼+安罗替尼和克唑替尼+安罗替尼三个组别。记录患者联合用药前最近一次的影像学检查结果,并以此为基线按Recist1.1评价疗效,以病情进展、患者死亡、停药、改变治疗方案为终点计算各组患者的无事件生存期(EFS),收集肿瘤标志物、血常规和肝功、心功能、肾功能生化检测等指标数据,统计分析患者联合用药前后各项指标的变化。结果 经筛选,共纳入49例患者的临床数据。阿来替尼+安罗替尼组有23例,疾病控制率(DCR)为86.96%;平均EFS为(10.8±3.6)个月,中位EFS为8.3个月;塞瑞替尼+安罗替尼组有14例,DCR为71.43%;平均EFS为(6.5±2.9)个月,中位EFS为5.6个月;克唑替尼+安罗替尼组有12列,DCR为66.67%;平均EFS为(7.7±3.2)个月,中位EFS为7.2个月。阿来替尼+安罗替尼组的平均EFS长于另外两组(P<0.05)。各研究组肿瘤标志物仅有CyFra21-1在克唑替尼+安罗替尼组在联合用药后升高(P<0.05),生化检测和血常规指标在用药前后差异无统计学意义(P>0.05)。结论 ALK抑制剂与安罗替尼联用,疗效最好为阿来替尼,其次为塞瑞替尼,最后为克唑替尼。三种ALK抑制剂与安罗替尼联用后,均未导致心、肝、肾功能和血细胞损害。
Objective To evaluate the efficacy of different anaplastic lymphoma kinase(ALK)inhibitors combined with anlotinib in the treatment of non-small cell lung cancer(NSCLC).Methods Clinical data of drug resistant NSCLC patients with ALK positive mutation was collected who were treated with ALK inhibitors and anlotinib synchronously.According to different regimens,three groups were set,alectinib+anlotinib,ceritinib+anlotinib,and crizotinib+anlotinib.The latest imageological examination results of the patient before the synchronous therapy was set as the baseline to evaluate the therapeutic effect according to Recist1.1.The event free survival(EFS)of each group was calculated with disease progression,patient death,treatment discontinuation and changing regimen as endpoints.Data of tumor markers,hematology test,liver function,cardiac function,renal function biochemical examination was collected and analyzed statistically before and after the combination therapy,with P<0.05 as the statistically significant difference.Results After screening,clinical data of 49 patients were collected.Twenty-three patients in the alectinib+anlotinib group,with a disease control rate(DCR) of 86.96%;mean EFS was(10.8±3.6)months,median EFS of 8.3 months;14 patients in the ceritinib+anlotinib group,with a DCR of 71.43%,mean EFS was(6.5±2.9)months,median EFS was 5.6 months;12 patients in the crizotinib+anlotinib group,with a DCR of 66.67%,mean EFS was(7.7±3.2)months,median EFS was 7.2 months.EFS of alectinib+anlotinib group was longer significantly than the other two groups(P<0.05).Only CyFra21-1,increased significantly after the combination of crizotinib and anlotinib(P<0.05).No statistically significant difference in biochemical test and hematology test before and after the treatment(P>0.05).Conclusions The therapeutic effect of ALK inhibitors with anlotinib was ordered,alectinib being the most effective,followed by ceritinib and finally crizotinib.The combination of ALK inhibitors with anlotinib did not cause any abnormal results in the examination of heart,liver,kidney and blood cells.