大范围弥散成像与骨扫描对全身骨转移检测对比分析

摘要

Objective To evaluate the value of magnetic resonance in whole body-diffusion weight imaging(WB-DWI) and emission computed tomography(ECT) bone scan in detection of bone metastases.Methods 30 cases of malignant tumors (lung cancer 18,prostate cancer 12) confirmed by clinical were collect.All cases received WB-DWI and ECT bong scan,the lesions combined MRI scan (T1WI,T2WI and fat suppression STIR).WB-DWI and ECT check interval time less than 2 weeks.Results In 30 cases,WB-DWI and ECT detective the same sites of lesions.WB-DWI detective spinal metastases 23 cases (76.7％),pelvic metastases 14 cases(46.7％),rib metastases 6 cases (20.0％),humerus metastases 4 cases (13.3％),femoral metastases 6 cases (20.0％).ECT detective spinal metastases 19 cases (63.3％),pelvic metastases 11 cases (36.7％),rib metastases 5 cases (16.7％),humerus metastases 4 cases (13.3％),femoral metastases 6 cases (20.0％).WB-DWI and ECT to the spine,humerus and femur transfer detection on difference (P＞0.05),the pelvis,frame transfer detection have difference (P＜0.05).Conclusion WB-DWI and ECT are sensitive to bone metastases.In contrast,WB-DWI has higher detection rate,position and quantitative accuracy than ECT.%目的 评价磁共振全身弥散成像(WB-DWI)与同位素全身骨扫描(ECT)对全身骨转移的检测价值.方法 选择经临床确诊的恶性肿瘤骨转移30例(肺癌18例、前列腺癌12例)作为研究对象.采用WB-DWI及ECT对全身扫描,结合骨转移部位MRI扫描(取T1、T2加权像及脂肪抑制技术STIR).WB-DWI及ECT检查间隔时间小于2周.结果 30例中,WB-DWI、ECT检出骨转移部位相同.WB-DWI检出脊柱转移23例(76.7％),骨盆转移14例(46.7％),肋骨转移6例(20.0％),肱骨转移4例(13.3％),股骨转移6例(20.0％).ECT检出脊柱转移19例(63.3％),骨盆转移11例(36.7％),肋骨转移5例(16.7％),肱骨转移4例(13.3％),股骨转移6例(20.0％).WB-DWI与ECT对脊柱、肱骨、股骨转移检测无差异(P＞0.05),对骨盆、肋骨转移检测有差异(P＜0.05).结论 WB-DWI、ECT两种方法对骨转移均敏感,相比之下,WB-DWI对骨转移检出率、定位、定量准确性较ECT为高.