全身磁共振弥散加权成像对恶性肿瘤全身转移的诊断价值

Diagnostic value of body magnetic resonance diffusion weighted imaging for metastases

目的探讨全身磁共振弥散加权（whole body magnetic resonance diffusion weighted imaging with back groundbod ysignalsuppression,WB-DWIBS）对恶性肿瘤全身转移的诊断价值.方法：24例恶性肿瘤患者行WB-DWIBS检查,处理生成全身弥散图,并与相应患者全身骨扫描结果相对照.分析两种检查方法对全身转移灶的敏感性、特异性,比较两种方法在诊断全身转移灶方面的诊断价值.结果：24例经病理证实的恶性肿瘤患者中,WB-DWIBS检出病灶156处,核素骨扫描检出134处,WB-DWIBS与全身骨扫描诊断全身转移灶的灵敏度、特异度、假阳性率、假阴性率分别为90.3%、35.2%、65.3%、10.6%;92.4%、33.3%、63.1%、9.4%.两种检测方法在检测24例患者全身转移病灶方面的结果无明细统计学差异（P〈0.5）.结论：全身弥散加权成像对恶性肿瘤的全身转移是一种有效的检查方法.

ObjectiveTo investigate the diagnostic value of body magnetic resonance diffusion weighted imaging for the metastases. Methods：24 cases of patients with cancerswere given body magnetic resonance diffusion imaging, and the results were compared with the bone scintigraphy. Results：In the 24 cases ,whole-body DWI found 156 lesions;andthe bone scintigraphy found 134 lesions,the Degree of sensitivity, specific, false positive rate and false negative rate of WB-DWIBS and thethe bone scintigraphy are 90.3%、35.2%、65.3%、10.6%;92.4%、33.3%、63.1%、9.4%. theresults are consistant.whole-body DWI even can find more lesion. Conclusion：The body magnetic resonance diffusion weightedimaging is an effective examination method for the metastases.