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脑的放射性损伤 被引量:2

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摘要 晚发放射损伤是放射性脑损伤限量脑照射后的主要并发症,它有二种类型:局灶型及弥漫型,二者的基本病理变化相同。局灶性坏死有占位性损害的CT及MR特征,伴有局灶性神经病学及颅内压增高的临床表现。弥漫性放射损伤则以侧脑室周围弥漫白质病变为特征,临床以精神功能损害为主。坏死性脑白质病则是化疗后弥漫性脑白质损伤的一种形式。正电子发射体层扫描鉴别肿瘤复发及局灶性放射坏死的阳性及阴性预测值均为80%~90%。
出处 《国外医学(临床放射学分册)》 1992年第5期282-285,共4页
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