骨显像与MRI对骨转移瘤的诊断价值

The value of radionuclide imaging and MRI in diagnosis of metastatic tumor of bone

目的:比较放射性核素骨显像和MRI在诊断骨转移瘤上的价值。方法:选取42例证实为恶性肿瘤并发骨转移的病例,比较骨显像和MRI的阳性率与病灶检出数,并分析骨转移瘤的来源及好发部位。结果:相同扫描野内,骨显像和MRI各发现了167、132个病灶,阳性率分别为92.9%、85.7%,二者差异无统计学意义(P>0.05)。肺癌、乳腺癌好发骨转移,转移多发于脊柱、肋骨、骨盆。结论:骨显像和MRI均能高效率地检出骨转移瘤,二者联合最具有早期诊断价值。

Objective: To compare the efficiency of radionuclide imaging and MRI in diagnosing metastatic tumor of bone. Methods: Fourty-two cases suffered from metastatic tumor of bone were compared the positive rate and number of foci respectively by radionuclide imaging and MRI, and were analyzed the primary tumor and locations of metastases. Results: In the same scan field, radionuclide imaging and MRI found 167 and 132 foci respectively, the positive rates were 92.9% and 85.7% without statistical difference. Lung cancer, breast cancer were the first two primary tumors that metastasized to bone. Spine, rib and hipbone were often involved. Conclusion: Radionuclide imaging and MRI are both sensitive to detect metastatic tumor of bone. Their combination is the most effective way to diagnose skeletal metastases as early as possible.