试述头部常见的几种放疗反应及其处理。
骶髂关节功能障碍的初期治疗不包括() ["A．药物干预","B．骶髂关节注射","C．手法治疗","D．局部用冰敷","E．限制长时间坐、站"]
PACS正确的涵义是() ["A．图像存储系统","B．图像传输系统","C．图像网络系统","D．图像通讯系统","E．图像存储与传输系统"]
放疗后常见的皮肤和粘膜放射反应表现如何?
纤维肉瘤的主要诊断依据是() ["A．发生于深部组织","B．鱼肉状","C．异型性明显的纤维母细胞","D．出血坏死","E．假包膜形成"]
试述皮肤和粘膜放射反应的处理。
