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目的：比较ＭＲＩ和同位素骨扫描对骨转移瘤的诊断价值。方法：对６４例同时进行了ＭＲＩ和同位素骨扫描检查并确诊为骨转移瘤的病例，以ＭＲＩ扫描野内脊柱和骨盆骨为观察目标，比较ＭＲＩ与同位素骨扫描对该部位病变的显示情况。结果：６４例患者，ＭＲＩ共检查了７３个部位（骨盆３０，腰椎１９，胸椎１６，颈椎８），在ＭＲＩ扫描范围内，以病灶数为统计单位，确诊为骨转移瘤的共２０１个病灶。在ＭＲＩ上，真阳性１９８个，假阴性３个，无假阳性，其诊断敏感性为９８．５％。在同位素骨扫描，真阳性１５４个，假阴性４７个，假阳性４８个，其诊断敏感性为７６．６％。结论：在显示骨转移瘤方面，ＭＲＩ较同位素骨扫描具有更高的敏感性，但受到扫描范围的限制。
Objective: To compare the diagnostic value of MRI and isotope bone scan on bone metastases. METHODS: Sixty-four patients who underwent MRI and isotope bone scans simultaneously and were diagnosed as bone metastases were examined with MRI scans of the spine and pelvic bones in the field. The MRI and isotope bone scans were used to compare the findings of the lesions. RESULTS: In 64 patients, MRI examined 73 sites (pelvis 30, lumbar 19, thoracic spine 16, cervical spine 8). In the MRI scan range, a total of 201 lesions were diagnosed as bone metastases with statistically significant number of lesions. . On MRI, there were 198 true positives, 3 false negatives, and no false positives. The diagnostic sensitivity was 98.5%. In the isotope bone scan, there were 154 true positives, 47 false negatives, and 48 false positives. The diagnostic sensitivity was 76.6%. CONCLUSIONS: MRI is more sensitive than isotope bone scan in displaying bone metastases, but is limited by the scan range.