高剂量区 meaning in English
high dose area
high dose region
Examples
- The whole - body gamma knife system is a kind of non - invasive medical instrument by using co - 60 as the gamma ray source . according to geometrically focusing theory , the gamma knife system can precisely focus in spirals 30 beams of gamma rays from different directions to a target through a collimator . by the collimator s direction , the predetermined lesion will be under radiation in heavy dose and subsequently be destroyed completely
体部伽玛刀是利用能产生伽玛射线的钴60作为放射源，根据几何聚焦原理，将30束伽玛射线从不同方向和位置通过准直后经一个固定的轴旋转聚焦到焦点，形成品质优良的剂量区，将肿瘤组织置于该高剂量区中，即可在预定时间内将病变组织摧毁，体表和焦点以外的正常组织仅受到瞬时照射而基本上不受损伤。 - According to geometrical focusing theory , the gamma knife can focus in spirals 30 beams of co - 60 gamma rays through a collimator to form a high - quality high - dose radiation field . the size of radiation filed can be varied and shaped according to tumor size for 3d radiotherapy . therefore , it can effectively increase radiation dose to tumor tissues and decease radiation dose to normal tissues
根据几何聚焦原理，将30束钴60伽玛射线通过准直后经一个固定的轴线旋转聚焦，形成品质优良的高剂量区分布，经治疗计划系统的优化，可使高剂量区的剂量分布，在三维方向上和肿瘤的形状一致，从而实现三维适形放射治疗。