简述放射治疗剂量选择的基本原则
治疗有神经系统症状的大细胞性贫血首选药() ["维生素B12","叶酸","维生素C","维生素B6","铁剂"]
脊柱骨折并发脊髓损伤手术的目的是() ["整复骨折与脱位","解除脊髓或神经根的压迫","内固定稳定脊柱","部分脊髓或马尾损伤者,可于术中修复","手术中可直接给予神经营养药物"]
患者男性,系头部重物击伤后6小时入院,患者伤后有短暂昏迷,而后出现"中间清醒期",1小时前又出现神志不清,考虑以下哪项诊断可能性最大() ["硬膜外血肿","硬膜下血肿","脑内血肿","脑震荡","脑挫裂伤"]
下列属于衣缝装饰工艺的是()。 ["镶","绣","嵌","辑","夹"]
何为放射治疗的临床剂量学四原则