对比PET/MRI与PET/CT检出肝转移癌效能

摘要

目的 对比观察PET/MRI与PET/CT检出肝转移癌的效能.方法 纳入78例共409个肝转移癌病灶,比较PET/CT及PET/M RI检出肝转移癌的阳性率.对A组50例283个病灶先行PET/CT后行PET/MR检查,B组28例126个病灶先行PET/MR后行PET/CT.采用Spearman秩相关分析和Wilcoxon秩和检验评价组内不同检查方法所获病灶最大标准摄取值(SUVmax)的相关性及其差异.结果 PET/M RI对肝转移癌的检出率(381/409,93.15％)明显高于PET/CT (285/409,69.68％,P＜0.05).A组PET/M RI的阳性率(266/283,93.99％)明显高于PET/CT (197/283,69.61％,P＜0.05);PET/MRI与PET/CT的SUVmax高度相关(r=0.84,P＜0.05),而PET/M RI的SUVmax显著高于PET/CT的SUVmax (P＜0.05).B组PET/M RI阳性率(115/126,91.27％)明显高于PET/CT (88/126,69.84％,P＜0.05);PET/M RI与PET/CT的SU Vmax中度相关(r=0.74,P＜0.05),且差异无统计学意义(P＞0.05).结论 PET/MRI检出肝转移癌效果优于PET/CT;二者所获SUVmax相关性较好.