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自1989年以来,我们应用B超扫描仪(EUB—40型,探头频率3.5 MHz)对脑肿瘤术后疑有复发症状者经骨窗探测22例,其中男16例,女6例;年龄7～68岁;均为脑肿瘤
Since 1989, we used B-scan scanner (EUB-40 type, probe frequency 3.5 MHz) to detect 22 cases of suspected recurrent brain tumor after surgery through the bone window, including 16 males and 6 females; age 7 ~ 68 years old; all brain tumors