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physical dose
    PHYSICAL DOSE MEASUREMENTS AFTER PHOTON EXTERNAL IRRADIATION ACCIDENTS
    光子外照射事故后物理剂量测量方法
    Physical dose measurement and estimation in a patient irradiated in an 192 Ir accident.
    一例~(192)Ir源放射事故病人的物理剂量估算和测量
    A rough estimation shows that the physical dose distribution by electron beams
    当在辐照部位附加一适宜磁场时,粗略估计表明能量约为50兆电子伏的电子束能在组织中产生类似π~-介子的物理剂量分布,因而有助于深部肿瘤的治疗。
    The importance on dosimetry and severael methods for physical dose measurement and their practicability after photon external irradiation accidents are briefly discussed.
    本文简要讨论了光子外照射事故后,剂量测量的重要性及各种物理剂量测量方法和它的实用性,其中包括热释光和电子自旋共振方法。
    Biological dose absorbed by the boy who stole the sou-rce was about 96~128 mGy. (physical dose abous 120 mGy), the others were about10~30 mGy (physical dose about 10~30 mGy). The results indicated that biologicaldoseswere quite approximate to the physical doses.
    结果生物剂量与理物剂量相当接近,盗源者生物剂量为96.3~127.8mGy,物理剂量为121mGy,其他人员生物剂量和物理剂量在1~30mGy之间。
    Objective On basis of physical dose optimization, LQ model was used to investigate the difference between the curves of biological effective dose and physical isodose. The influence of applying the biological dose concept on three dimensional conformal radiotherapy of prostate carcinoma was discussed.
    目的 在物理剂量优化基础上采用LQ模式比较生物等效剂量曲线与物理等剂量线分布的不同 ,探讨生物剂量概念的应用对前列腺癌三维适形放射治疗的影响。
    Methods Four treatment plannings were designed for physical dose optimization: three fields, four-box fields, five fields and six fields.
    方法 物理剂量优化设计 4个治疗计划 :三野、盒式四野、五野和六野技术。
    The difference between the adjusted physical dose (APD) and the physical dose was also studied.
    并比较校准后物理剂量与处方物理剂量的差别。
    The physical dose was uniform in the target, but the biological effective doses revealed great discrepancy in the biological model.
    靶区的物理剂量虽较均匀 ,等效生物剂量却相差很大 ;
    Adjusted physical dose distribution also displayed larger discrepancy than the physical dose unadjusted.
    校准后的物理剂量也较处方物理剂量差别大。
    The distribution of physical dose and clinical results were compared between the groups.
    比较2组的物理剂量分布情况。
    Conclusion Stereotactic radiotherapy supplementing conven- tional radiotherapy is effective for postoperative brain glioma,which method not only shows excellence in physical dose distribution but strictly in accordance with the principle of radiobiology also.
    结论立体定向放疗加常规放疗治疗胶质瘤既发挥了放射物理剂量分布的优点,又符合放射生物学原则,较以往治疗提高了患者的生存机会。
    Objective To investigate the physical dose and biologically effective dose uncertainty in the spinal cord from inter-fraction setup errors in intensity-modulated radiation therapy.
    目的探讨调强放疗中分次间摆位误差对脊髓物理剂量和生物效应剂量的影响。
    Methods Simula- ted actual setups on treatment plan system,compared with primary plan without setup errors to evaluate the difference in the physical dose and biologically effective dose between plan and delivery was carried ont.
    方法在治疗计划系统上模拟实际的摆位过程和无摆位误差的原计划进行比较,确定1个疗程中脊髓累积受照的物理剂量和生物效应剂量与相应计划值的差别。
 

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