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三维适形放射治疗
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三维适形放射治疗
Encyclopedia
医学
放射治疗
释
3-dimensional conformal radiation therapy,3DCRT
三维适形放射治疗
利用患者电子计算机断层扫描(computed tomography, CT)图像重建三维的解剖结构,选择不同的入射方向,采用多叶光栅或铅挡形成与病变(靶区)形状一致的多个照射野,使得高剂量区剂量分布的形状在三维方向上与病变(靶区)的形状一致,同时使得病灶周围正常组织的受照剂量降低的放射治疗技术。
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mineral resource reserves
mineral resources
mineral resources and reserves
mineral resources assessment system
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mineral resources investigation
mineral resources law
Mineral Resources Law of the Russian Federation
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minerals
minerals and trace elements
mineral science and engineering
mineral separation and identification
mineral solubility
minerals processing technology
mineral supplement
mineral surface contact angle
mineral surface electrical properties
mineral surface hydration
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